The Bellman Award is given for distinguished career contributions to the theory or application of automatic control. It is the highest recognition of professional achievement for US control systems engineers and scientists. The recipient must have spent a significant part of his/her career in the USA. The awardee is expected to make a short acceptance speech at the AACC Awards Ceremonies during the ACC.

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2022: Eduardo D. Sontag*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

Eduardo D. Sontag received his Licenciado in Mathematics at the University of Buenos Aires (1972) and a Ph.D. in Mathematics (1977) under Rudolf E. Kalman at the University of Florida. From 1977 to 2017, he was at Rutgers University, where he was a Distinguished Professor of Mathematics and a Member of the Graduate Faculty of the Departments of Computer Science of Electrical and Computer Engineering and the Cancer Institute of NJ. He directed the undergraduate Biomathematics Interdisciplinary Major, the Center for Quantitative Biology, and was Graduate Director at the Institute for Quantitative Biomedicine. In January 2018, Dr. Sontag became a University Distinguished Professor in the Departments of Electrical and Computer Engineering and of BioEngineering at Northeastern University, where he is also affiliated with the Mathematics and the Chemical Engineering departments. Since 2006, he has been a Research Affiliate at the Laboratory for Information and Decision Systems, MIT, and since 2018 he has been the Faculty Member in the Program in Therapeutic Science at Harvard Medical School. His major current research interests lie in several areas of control and dynamical systems theory, systems molecular biology, cancer and immunology, and computational biology. Sontag has authored over five hundred research papers and monographs and book chapters in the above areas with about 59,000 citations and an h-index of 104 (51 since 2017). He is a Fellow of various professional societies: IEEE, AMS, SIAM, and IFAC, and is also a member of SMB and BMES. He was awarded the Reid Prize in Mathematics in 2001, the 2002 Hendrik W. Bode Lecture Prize and the 2011 Control Systems Field Award from the IEEE, the 2002 Board of Trustees Award for Excellence in Research from Rutgers, and the 2005 Teacher/Scholar Award from Rutgers.

Richard Bellman was a paragon of deep foundational thinking and interdisciplinary work, so I am deeply grateful to receive an award that honors him. It is especially meaningful that the prize is awarded by the Automatic Control Council, which brings together such disparate areas of applications in engineering, mathematics, and the sciences.

Exactly 50 years ago, as an undergraduate in Buenos Aires looking for a senior project, I discovered the work of Rudolf Kalman, which sparked a stable and robust attraction to control theory that continues to this day. One of my professors met Kalman at a conference, which led to Kalman inviting me to be his student. Kalman’s rigorous mathematical approach inspired research excellence, deep thinking, and clear exposition. The 1970s witnessed an explosion of new and exciting ideas in systems theory, and many of the leaders in the field visited Kalman's Center. I was extremely lucky to have the opportunity to learn from all of them.

After my PhD, I went to Rutgers, where I was fortunate to collaborate with Hector Sussmann, and to learn so much from him.

Five years ago, I was recruited by Northeastern University, where I have fantastic colleagues, especially Mario Sznaier and Bahram Shafai.

Of course, I am grateful to all who influenced my work, too many to credit here, and to those who applied, enriched, and extended my initial ideas. At the risk of sounding presumptuous, let me share some thoughts about research in systems and control theory. First, it is important to formulate questions that are mathematically elegant and general. Paradoxically, general facts are often easier to prove than special ones, because they are stripped of irrelevant details. Second, we should strive to simplify arguments to their most elementary form. It is the simplest ideas, those that look obvious in retrospect, that are the most influential, as Bellman’s dynamic programming so beautifully illustrates. Third, we should be aware of the essential connection between theory and applications. Applications provide the inspiration for an eventual conceptual synthesis. Conversely, theory is strengthened and refined by working out particular cases and applications. Fourth, one should be cautiously open to new ideas, even those orthogonal to current fashion. But not all new ideas are good: novelty by itself is not enough. Finally, we should not lose sight of the fact that, while fun and intellectually challenging, our ultimate objective is to improve the world through scientific and engineering advances.

Which brings me back to Richard Bellman’s heritage, which we honor today. Years after his foundational work on optimality, Bellman turned to biology and medicine, even starting a mathematical biology journal. I am sure that the mechanistic understanding of behavior at all scales, from cells to organisms will lead to control and elimination of disease and the extension of healthy lifespans. I find immunology and its connections to infectious diseases and cancer to be a fascinating field for systems thinking. In addition, the associated engineering field of synthetic biology will lead to new therapeutic approaches as well as scientific understanding, and new mathematics and control problems suggest themselves all the time. In my view, the main value of systems and control to molecular biology will not be in applying deep theoretical results. Instead, conceptual ideas like controls, measurements, robustness, optimization, and estimation are where the main impact of our field will be felt.

Thank you so much.

June 9, 2022

Atlanta, GA USA

ACC 2022

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2021: Miroslav Krstic*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

Miroslav Krstic is Distinguished Professor of Mechanical and Aerospace Engineering, holds the Alspach endowed chair, and is the founding director of the Center for Control Systems and Dynamics at UC San Diego. He also serves as Senior Associate Vice Chancellor for Research at UCSD. As a graduate student, Krstic won the UC Santa Barbara best dissertation award and student best paper awards at CDC and ACC. Krstic has been elected Fellow of IEEE, IFAC, ASME, SIAM, AAAS, IET (UK), and AIAA (Assoc. Fellow), as well as foreign member of the Serbian Academy of Sciences and Arts, and of the Academy of Engineering of Serbia. He has received the SIAM Reid Prize, ASME Oldenburger Medal, Nyquist Lecture Prize, Paynter Outstanding Investigator Award, Ragazzini Education Award, IFAC Nonlinear Control Systems Award, Chestnut textbook prize, Control Systems Society Distinguished Member Award, the PECASE, NSF Career, and ONR Young Investigator awards, the Schuck (’96 and ’19) and Axelby paper prizes, and the first UCSD Research Award given to an engineer. Krstic has held the Springer Visiting Professorship at UC Berkeley, the Distinguished Visiting Fellowship of the Royal Academy of Engineering, the Invitation Fellowship of the Japan Society for the Promotion of Science, and has been awarded four honorary professorships outside of the United States. He serves as Editor-in-Chief of Systems & Control Letters and Editor in Automatica, has served as Senior Editor in IEEE Transactions on Automatic Control, and is editor of two Springer book series. He has served as Vice President for Technical Activities and BoG member of the IEEE Control Systems Society and, for a triennium, as chair of the IEEE CSS Fellow Committee. Krstic has coauthored fifteen books on adaptive, nonlinear, and stochastic control, extremum seeking, control of PDE systems including turbulent flows, and control of delay systems.

Dear Automatic Control colleagues,

I am happy and humbled to receive the Bellman Award.

My profound gratitude goes to the colleagues who supported my nomination. I am thankful and deeply moved by the selection committee and the A^{2}C^{2}, which advanced a candidate in his mid-fifties, an adolescent by Bellman award standards.

The timing of this award, which recognizes the achievement of an *American* control systems researcher, carries significance for me. The Bellman award came in the year that happened to be the thirtieth anniversary of my coming to the United States as a graduate student.

It is customary on this occasion for the recipient to say a few words about their formative years and professional trajectory.

I was born and grew up in a small city called Pirot, in remote southeastern Serbia. I was fortunate that my provincial city had one of the top science high schools in former Yugoslavia. And my caring parents spared no expense to provide my brother and me with broader cultural opportunities than those that our hometown could offer.

My undergraduate years at the Department of Electrical Engineering of the University of Belgrade provided me with two things. First, the toughest academic competition I’ve experienced, before or since, was during those five undergraduate years. And, second, I met my future wife in our freshman math class.

Before Petar Kokotovic gave me a PhD opportunity, I had only an inkling that I might have a shot at *some* success in research. But, within a few weeks of arriving in Santa Barbara, I had the fortune of solving a problem that had a reputation of being unsolvable, though I didn’t know that. So things moved quickly with research from that point on, and I had Petar’s unlimited attention. I could fill hours on being mentored by Petar. But let me just say that, during those Santa Barbara years, Petar’s enthusiasm and support for my work left me feeling that there was nothing more important happening in the world than what I was doing in research. At the same time, with everything I would produce or say, I had the training benefit of a keener, more unforgiving, and yet more nuanced critique than I would ever subsequently encounter, as a researcher or academic administrator.

Of the areas credited to me, the ones that probably come to mind first are PDE backstepping and extremum seeking. Let me describe how these interests started, soon after I left Santa Barbara.

Petar Kokotovic, Richard Murray, and Art Krener had a large project on controlling flow instabilities in jet engines. We solved those problems using reduced-order nonlinear ODE models of those flows. And it was clear that, for a nonlinear control researcher, there was hardly a more fertile ground than fluids. The only problem was: who would provide an ODE reduction for me for the next control design problem I tackle? If fluids people spend their entire careers refining, for a *specific* type of flow, the reductions from the Navier-Stokes representation to ODEs, it was obvious I could not count on them for control-oriented reduced models. I had to roll up my sleeves and build control methods directly for PDEs. From scratch. Because Riccati equations—in infinite dimension to boot—are not the way to extend PDE control to the nonlinear case. The answer to the challenge of constructive PDE control came in the form of continuum backstepping transformations, employing Volterra operators and easy-to-solve Goursat-form PDEs for the control gain functions. If you have interest in an example of this line of PDE control research, I recommend the paper with Coron, Bastin, and my student Vazquez, which has enabled stabilization of traffic flows in a congested, stop-and-go regime.

How I got drawn to extremum seeking is also interesting. In 1997, a combustion colleague at Maryland pointed me to publications from the 1940s and 1950s on what I would describe as an approach to adaptive control for nonlinear systems. Heuristic, but orders of magnitude simpler than what I had written my PhD on. Attempts at sleep were futile, for several days, until I figured out how to prove stability of this algorithm, using a combination of averaging and singular perturbation theorems. If you wanted to sample one control paper from the last quarter century on extremum seeking, I recommend the one on model-free seeking of Nash equilibria with Tamer Basar and my student Paul Frihauf.

To my students and collaborators, I would like to say: this Bellman award is yours. For your papers, books, theorems, and industrial products.

As I mention students, I want to extend gratitude to two companies that have been the environments in which my former students have been able to thrive and leave a legacy. At ASML, control of extreme ultraviolet photolithography has improved the density of microchips by 2-3 orders of magnitude. At General Atomics, control of aircraft arrestment on carriers has enabled one of the most impressive and deployed recent advances in defense technology.

I won’t pretend that it is not a delight to see my name in the list of the 44 recipients of the Bellman award. Scholars of incredible depth and engineers of stunning impact. I’ve studied the list. Amazingly, the numbers of American-born and foreign-born recipients of this US award seem to be the same: 22 each. If you sought an example of how the US is unequaled in extending opportunity to scientific immigrants, like myself, you could hardly find a clearer illustration.

It was also impossible for me to miss in the list that, after India, represented by four Bellman awardees, the second most highly represented foreign country is a certain little country, just a few percent more populous than the city of Atlanta, the country from which Petar Kokotovic, Drago Šiljak, and I came to the US. If I don’t mention this, in the hope of inspiring a few young minds at the Universities of Belgrade, Novi Sad, or Niš, who should?

I couldn’t have made it here without role models and without pioneers who charted the pathways along which it was then not that hard for me to walk. Among them are people who have also generously supported me over the years: Tamer Basar, Manfred Morari, Art Krener, Eduardo Sontag, Masayoshi Tomizuka, Galip Ulsoy, Jason Speyer, Graham Goodwin, Jean-Michel Coron, Petros Ioannou—to limit myself to ten. I hope that, in the remainder of my research career, I more fully deserve their support, as well as by other friends I don’t mention here but who are aware of the extent of my gratitude and respect.

Let me close and thank you with a quote from my former department chair who astutely observed: “To you guys, in control systems, every other field is a special case of control theory.”

What if that’s true?

June 7, 2022

Atlanta, GA USA

ACC 2022

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2020: Galip Ulsoy*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

A. Galip Ulsoy is the C.D. Mote, Jr. Distinguished University Professor Emeritus of Mechanical Engineering (ME) and the William Clay Ford Professor Emeritus of Manufacturing at University of Michigan (UM), Ann Arbor, where he served as the ME Department Chair, Deputy Director of the National Science Foundation (NSF) Engineering Research Center for Reconfigurable Manufacturing Systems, and the Director of the USA Army Ground Robotics Reliability Center. He also served as Director of Civil and Mechanical Systems at NSF and the President of the American Automatic Control Council (AACC). He received the Ph.D. from University of California at Berkeley (1979), the M.S. degree from Cornell University (1975), and the B.S. degree from Swarthmore College (1973). His research interests are in the dynamics and control of mechanical systems, and he has published 4 books, holds 3 patents, and has published over 300 journal and conference papers. His work is highly-cited and has had major impact in industry. He has received numerous awards, including the AACC 1993 O. Hugo Schuck Best Paper Award, the 2003 and 2016 Rudolf Kalman Best Paper Awards from the J. Dynamic Systems, Measurement and Control, the 2008 Albert M. Sargent Progress Award from the Society of Manufacturing Engineers (SME), the 2008 Rufus T. Oldenburger Medal, the 2013 Charles Russ Richards Award from the American Society of Mechanical Engineers (ASME) and the 2014 Hideo Hanafusa Outstanding Investigator Award in Flexible Automation. He is a member of the USA National Academy of Engineering, received the 2012 Presidential Special Award from the Scientific and Technological Research Council of Turkey, and is a Fellow of ASME, SME, IEEE and the International Federation of Automatic Control (IFAC).

To receive the Richard E. Bellman Control Heritage Award is truly an honor. I am thankful first to all of you for attending today after two postponements of these ceremonies due to the pandemic. I am grateful to the honors committee for selecting me, and to my nominator and references for their willingness to put forth and support my nomination.

The Bellman Award is given for “distinguished career contributions to the theory or application of automatic control.” My career in control started as a junior at Swarthmore College in 1972 when I took a course based on the textbook *Dynamics of Physical Systems* by Robert Cannon. That course really challenged me, and I found myself putting in a lot of time and energy just to get by. That investment sparked my interest, and so as a master's student at Cornell University I worked with Dick Phelan and learned the practical and experimental side of automatic control in the laboratory using analog computers. In 1975 I decided to pursue control engineering for my Ph.D. work and Prof. Phelan said, in mechanical engineering at that time, there were really only two choices: MIT or UC Berkeley. So I wound up at UC Berkeley where I learned controls from Yasundo Takahashi, Masayoshi Tomizuka (Tomi is also a Bellman Award recipient), and Dave Auslander. I not only learned the latest in control theory from the book *Control and Dynamic Systems* by Takahashi, Rabins and Auslander, but did my first experiments using digital controllers. My doctoral advisor and professional role model, Dan Mote, is a dynamicist, and my research was on reducing sawdust by controlling vibrations of bandsaw blades during cutting and included theory, computation and experiment.

When I started as an Assistant Professor at the University of Michigan in 1980, I had the great fortune to have two very special mentors. The late Elmer Gilbert (another Bellman Award recipient) came to my office to welcome me, to offer his help with the new graduate course I was developing, and to invite me to participate in a College of Engineering control seminar – a regular Friday afternoon seminar which I still continue to attend! The other was my longtime friend and collaborator Yoram Koren, together with whom I conducted many joint research projects, and from whom I learned much of what I know about control of manufacturing systems. Yoram and I had the first digital control computer, a PDP-11, at UM in our laboratory. Michigan was, and is, a wonderful place for control engineering. I had the good fortune to work with, not only Elmer and Yoram, but many outstanding collaborators: Joe Whitesell, the late Pierre Kabamba, Panos Papalambros, Dawn Tilbury, Huei Peng, Ilya Kolmanovsky, Harris McClamroch, Jeff Stein, Gabor Orosz, Chinedum Okwudire and many others! I worked on topics such as automotive belt dynamics, adaptive control of milling, reconfigurable manufacturing, vehicle lane-keeping, co-design of an artifact and its controller, time delay systems, and I was always richer for the experience. Throughout my professional career I worked extensively with industry, especially the Ford Motor Company, where I collaborated with and learned from excellent engineers like Davor Hrovat and Siva Shivashankar (automotive control), Charles Wu (control of drilling), and Mahmoud Demeri (stamping control).

I would like to recognize my wife, Sue Glowski, who is here today, for her love and support. She was educated in English and Linguistics but is always willing to patiently listen to my latest idea about control, even if she has to eventually ask: "what the hell is an eigenvalue?"

Finally, and most importantly, I want to recognize and thank my students and postdocs. This award recognizes your great ideas, and your fine work, and I am delighted to be here today to accept it on your behalf. Thank you!

June 7, 2022

Atlanta, GA USA

ACC 2022

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2019: Irena Lasiecka*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Irena Lasiecka**received her PhD in Applied Mathematics from the University of Warsaw in 1975, and was appointed to the Polish Academy of Sciences. It was an invitation by A.V. Balakrishnan to join UCLA in 1977 that brought her to the US, where her professional career has developed. Since then, her research interests have focused on the general area of control theory for infinite dimensional systems - predominantly Partial Differential Equations (PDEs). Here, her work has laid and developed the foundations of the theory with common emphasis on boundary/point control. She has published several research monographs and more than 300 research papers on topics such as optimal control theory, controllability, stabilization and long-time behavior for linear and non-linear problems of relevance to engineering. Her work includes mathematical breakthroughs that were required to advance the problem-oriented boundary control theory for PDEs. For this work, she was awarded in 2011 the SIAM W.I. Reid Prize. Her more recent contributions involve interactive systems with interface, describing fluid-flow/structure interaction and structural acoustics, where the goal is turbulence or utter or noise suppression. After Full Professorships at the University of Florida and the University of Virginia, where she was the Commonwealth Professor of Mathematics, since 2013 she is a Distinguished University Professor and Chair of the Department of Mathematical Sciences, University of Memphis. She has also held numerous visiting appointments in US and Europe. She has been in the ISI's List of Highly Cited researchers since its inception. She is an IEEE Fellow, AMS Fellow and SIAM Fellow, an IEEE Distinguished Lecturer, a Plenary Speaker at SIAM, AMS, IEEE Conferences and a former Chair of the IFIP TC7-Committee on Modeling and Optimization. She is the EIC of Applied Mathematics and Optimization [Springer] and Evolution Equations and Control Theory [AIMS]. Her work has been supported by NSF, AFOSR, ARO and NASA.

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2018: Masayoshi Tomizuka*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

Professor **Masayoshi Tomizuka** holds the Cheryl and John Neerhout, Jr., Distinguished Professorship Chair. He received his B.S. and M.S. degrees in Mechanical Engineering from Keio University, Tokyo, Japan and his Ph. D. degree in Mechanical Engineering from the Massachusetts Institute of Technology in 1974. He joined the faculty of the Department of Mechanical Engineering at the University of California at Berkeley in 1974. He currently serves as Associate Dean of the College of Engineering. Professor Tomizuka has taught courses in dynamic systems and controls. He has supervised more than 110 Ph. D. students to completion. His current research interests are optimal and adaptive control, digital control, signal processing, motion control, and control problems related to robotics, manufacturing, information storage devices, vehicles and human-machine systems. He served as Program Director of the Dynamic Systems and Control Program at the National Science Foundation from Sept. 2002 to Dec. 2004. He served as Director and CEO of the Berkeley Education Alliance for Research in Singapore (BEARS) from 2014 to 2016.

Dr. Tomizuka has been and is an active member of the Dynamic Systems and Control Division (DSCD) of the American Society of Mechanical Engineers (ASME). He served as Chairman of the Executive Committee of the Division (1986-87), Technical Editor of the ASME Journal of Dynamic Systems, Measurement and Control, J-DSMC (1988-93) and Editor-in-Chief of the IEEE/ASME Transactions on Mechatronics (1997-99). He served as President of the American Automatic Control Council (1998-99). He is also active in the International Federation of Automatic Control (IFAC). He chaired the IFAC Technical Committee on Mechatronic Systems (2005-2011). He is a Life Fellow of the ASME and the Institute of Electric and Electronics Engineers (IEEE), and is a Fellow of IFAC and the Society of Manufacturing Engineers. He is the recipient of the Best J-DSMC Best Paper Award (1995, 2010), the DSCD Outstanding Investigator Award (1996), the Pi Tau Sigma-ASME Charles Russ Richards Memorial Award (1997), the DSCD Leadership Award (2000), the Rufus Oldenburger Medal (2002), abd the John Ragazzini Award (2006).

Dear President Braatz, colleagues, students, ladies and gentlemen:

I feel tremendously honored to receive the Richard Bellman Control Heritage Award. Thank you to those who nominated me and supported my nomination, to the selection committee, and to the AACC Board for making me this year’s recipient.

I completed my undergraduate studies at Keio University in Japan and my graduate studies at MIT. Following my education at these wonderful institutions, I was able to join the excellent academic environment at the University of California, Berkeley. I am grateful to my teachers and colleagues at these institutions. I thank in particular my PhD advisor Dan Whitney and my early control colleagues at Berkeley, Yasundo Takahashi and David Aulander, and the many bright graduate students that I have had the privilege of having in my lab at Berkeley who are approximately 120 PhDs strong now. I thank the National Science Foundation and other government sponsors as well as industrial sponsors for providing me resources to maintain the Mechanical Systems Control laboratory, which is the home of my research group. Last but not least, I thank my wife Miwako for supporting me and our family, permitting me to concentrate on academics and schoolwork for many years, starting almost 50 years ago in my MIT days.

I jumped into the area of dynamic systems and control during my senior year at Keio University. The first book I read was __Modern Control Theory__ by Julius Tou. The book was an excellent summary of the State Space Control Theory, and I was fascinated by the elegant mathematical aspects of the subject. There was no internet back then of course, and major periodicals such as IEEE Transactions on Automatic Control and ASME Journal of Basic Engineering were the best sources to find the latest developments in the field. I was frustrated by the time delay between the time of research and publication. About at the time I completed my MS at Keio, I was fortunate to receive an admission offer from MIT. The time delay problem was naturally resolved. At MIT, I was inspired by many people including Dan Whitney, Tom Sheridan and Hank Paynter. Sheridan’s early work on preview control was the starting point of my dissertation work on the “optimal finite preview” problem.

In September 1974, I joined the University of California as an Assistant Professor of Mechanical Engineering. It’s hard to believe, but I am now completing my 44^{th} year at Berkeley.

At Berkeley, I have worked on many different mechanical systems. I joined UC Berkeley when the large scale integration technology was starting to make it possible to implement advanced control algorithms by using mini and micro computers. This allowed me to emphasize both the analytical aspects of control and the laboratory work. This research style still continues now.

Robots are multivariable and nonlinear. In particular, a configuration-dependent inertial matrix and nonlinear terms are unique for robots. I convinced one of my PhD students, Roberto Horowitz (who is now a professor and chair of the Mechanical Engineering Department at Berkeley), to work with me on model reference adaptive control as it applied to robots. Since then, robot control has remained a major research topic in my group. Our current research emphasizes efficiency and safety in human-robot interactions and merging model-based control and machine learning to make the robot system intelligent.

I worked on machining for a while. One control issue with machining is the dependence of input-output dynamics to cutting conditions and tool wear. One day, Jun-Ho Oh (who is now a professor at KAIST), took me down to the lab to show me model reference adaptive control on a Bridgeport milling machine. It was cleverly implemented and was the first application of modern adaptive control theory to machining.

In many mechanical systems involving rotational parts, we encounter periodic disturbances with known periods. Repetitive control is applied to this class of disturbances. I learned of it from visitors from Japan in the mid-1980s. Tsu-Chin Tsao (who is now a professor at UCLA) and I then developed our version of repetitive control algorithms emphasizing discrete time formulation and easy implementation.

Another fundamental control problem for mechanical systems is tracking arbitrary shaped reference inputs. Feedforward control is popular in tracking, but unstable system zeros make the problem complicated. To overcome this issue, I suggested to cancel phase shift induced by unstable zeros and introduced zero phase error tracking (ZPET) control in the late 1980s. The citation of this paper has reached 1,600 by now.

In the mid-1980’s, UC Berkeley started Program on Advanced Transit and Highway under the sponsorship of CalTrans. Automated highway systems was a topic of interest for quite a few control professors. Karl Hedrick and I were the primary faculty participants from ME: Karl worked on controls in the longitudinal direction and I in the lateral direction of vehicles. My first PhD student on this topic was Huei Peng (who is now a professor at University of Michigan). During the past five years or so, autonomous vehicles have become very hot as we all know, and I now have quite a few students working to blend control and machine-learning for applications to vehicles.

I have been fortunate to have had the opportunity to address a variety of challenging mechanical control problems over the span on my career so far. My research has been and continues to be rooted in the mechatronic approach; namely I have worked on the synergetic integration of mechanical systems with sensing, computation, and control theory. This approach provides the opportunity for academic research to have broad impacts on control engineering in practice, and I am honored to have had a hand in helping to advance a small part of it.

Thank you very much for this award. I am extremely grateful and honored.

ACC 2018

Milwaukee, WI USA

June 28, 2018

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2017: John S. Baras*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**John S. Baras** holds a permanent joint appointment as professor in the department of electrical and computer engineering and the Institute for Systems Research. He was the founding director of ISR, which is one of the first six National Science Foundation engineering research centers. Dr. Baras is the Lockheed Martin Chair in Systems Engineering and is the founding and current director of the Center for Hybrid and Satellite Communication Networks, a NASA commercial space center. He also serves as a faculty member of the university's Interdisciplinary Program in Applied Mathematics and an affiliate professor in the Computer Science Department.

Dr. Baras’ research interests include scaleable multicast security; integrated management of hybrid communication networks; modeling and performance evaluation of large broadband hybrid networks; fast internet over heterogeneous (wireless-wireline) networks; manufacturing process selection for electromechanical products; intelligent control; wavelets; robust speaker identification; low complexity, high fidelity, low rate speech coding; image processing and understanding; learning clustering algorithms and classification; distributed control (or decision) systems; stochastic dynamic model building; stochastic control and scheduling; real-time sequential detection and estimation; computer-aided control systems design; queuing systems; quantum communications; nonlinear systems; and radar systems modeling and performance evaluation and distributed parameter systems.

A Fellow of the IEEE, Dr. Baras has served the organization in various leadership positions. He also serves on the editorial boards of numerous mathematics and engineering journals and book series, and consults extensively with industry and government on various automation and telecommunication problems. He is the recipient of two Invention of the Year awards from the University of Maryland, holds two patents, and has received many awards for his research and publications. Dr. Baras received his B.S. in electrical engineering from the National Technical University of Athens, Greece, and the M.S. and Ph.D. degrees in Applied Math from Harvard University.

Dear President Masada, colleagues, students, ladies and gentlemen.

I am deeply moved by this award and honor, and truly humbled to join a group of such stellar members of our extended systems and control community, several of whom have been my mentors, teachers and role models throughout my career.

I am grateful to those who nominated me and supported my nomination and to the selection committee for their decision to honor my work and accomplishments.

I was fortunate through my entire life to receive the benefits of exceptional education. From special and highly selective elementary school and high school back in Greece, to the National Technical University of Athens for my undergraduate studies and finally to Harvard University for my graduate studies. My sincere and deep appreciation for such an education goes to my parents who distilled in me a rigorous work ethic and the ambition to excel, my teachers in Greece for the sound education and training in basic and fundamental science and engineering and to my teachers and mentors at Harvard and MIT (Roger Brockett, Sanjoy Mitter and the late Jan Willems) and the incredibly stimulating environment in Cambridge in the early 70’s.

Many thanks are also due to my students and colleagues at the University of Maryland, in the US and around the world, and in particular in Sweden and Germany, for their collaboration, constructive criticism and influence through the years. Several are here and I would like to sincerely thank you all very much.

I am grateful to the agencies that supported my research: NSF, ARO, ARL, ONR, NRL, AFOSR, NIST, DARPA, NASA. I am particularly grateful to NSF for the support that helped us establish the Institute for Systems Research (ISR) at the University of Maryland in 1985, and to NASA for the support that helped us establish the Maryland Center for Hybrid Networks (HyNet) in 1992.

I would also like to thank many industry leaders and engineers for their advice, support, and collaboration during the establishment and development of both the ISR and HyNet to the renowned centers of excellence they are today.

Most importantly I am grateful to my wife Mary, my partner, advisor and supporter, for her love and selfless support and sacrifices during my entire career.

When I came to the US in 1970 I was debating whether to pursue a career in Mathematics, Physics or Engineering. The Harvard-MIT exceptional environment allowed me freedom of choice. Thanks to Roger Brockett I was convinced that systems and control, our field, would be the best choice as I could pursue all of the above. It has indeed proven to be a most exciting and satisfying choice. But there were important adjustments that I had to make and lessons I learned.

I did my PhD thesis work on infinite dimensional realization theory, and worked extensively with complex variable methods, Hardy function algebras, the famous Carleson corona theorem and several other rather esoteric math. From my early work at the Naval Research Laboratory in Electronic Warfare (the “cross-eye” system) and in urban traffic control (adaptive control of queues) I learned, the hard way, the difficulty and critical importance of building appropriate models and turning initially amorphous problems to models amenable to systems and control thinking and methods. I learned the importance of judiciously blending data-based and model-based techniques.

In the seventies, I took a successful excursion into detection, estimation and filtering with quantum mechanical models, inspired by deep space laser communication problems, where my mathematical physics training at Harvard came in handy. I then worked on nonlinear filtering, trying to understand how physicists turned nonlinear inference problems to linear ones and investigate why we could not do the same for nonlinear filtering and partially observed stochastic control. This led me to unnormalized conditional densities, the Duncan-Mortensen-Zakai equation and to information states. This led me naturally to construct nonlinear observers as asymptotic limits of nonlinear filtering problems and the complete solution of the nonlinear robust output feedback control problem (nonlinear H-infinity problem) via two coupled Hamilton Jacobi Bellman equations. We even investigated the development of special chips to implement real-time solutions, a topic we are revisiting currently.

With the development and progress of the ISR I worked on many problems including: speech and image compression breaking the Shannon separation of source and channel coding, manufacturing processes, network management, communication network protocols, smart materials (piezoelectric, shape memory alloys), mobile wireless network design, network security and trust, and more recently human-machine perception and cognition, networked control systems, networked cyber-physical systems, combining metric temporal logic and reachability analysis for safety, collaborative decision management in autonomous vehicles and teams of humans and robots, new analytics for learning and for the design of deep learning networks mapping abstractions of the brain cortex, quantum control and computing.

Why I am telling you about all these diverse topics? Not to attract your admiration. But because at the heart of all my works are fundamental principles and methods from systems and controls, often appropriately extended and modified. Even in my highest impact (economic and social) work in conceiving, demonstrating and commercializing Internet over satellite services (with billions of sales world-wide – remember me when you use Internet in planes over oceans), we modified the flow control algorithm (the TCP) and the physical path, to avoid having TCP interpret the satellite physical path delay as congestion. That is we used systems and control principles.

Our science and engineering, systems and control, has some unparalleled unifying power and efficiency. That is, if we are willing to build the new models required by the new applications (especially models requiring a combination of multiple physics and cyber logic) and if we are willing to learn and apply the incredible new capabilities and technologies that are developed in information technology and materials. As is apparent especially in this conference (ACC), and in the CDC conference, by any measure, our field is exceptionally alive and well and continues to surprise many other disciplines by its contributions and accomplishments, which now extend even in biology, medicine and healthcare. So for the many young people here, please continue the excitement, continue getting involved in challenging and high impact problems, and continue the long tradition and record of accomplishments we have established for so many years. And most importantly continue seeking the common ground and unification of our methods and models.

Let me close with what I consider some major challenges and promising broad areas for the next 10 years or so:

1) Considering networked control systems we need to understand what we mean by a “network” and the various abstractions and system aspects involved. Clearly there are more than one dynamic graphs involved. This needs new foundations for control, communication, information, computing.

2) Systems and control scientists and engineers are the best qualified to develop further the modern field of Model-Based Systems Engineering (MBSE): the design, manufacturing/implementation and operation of complex systems with heterogeneous physical, cyber components and even including humans.

3) The need for analog computing is back, for example in real-time and progressive learning and in CPS. Some of the very early successes of control were implemented in analog electromechanical systems due to the need for real-time behavior. Yet we do not have a synthesis theory and methodology for such systems due to the heterogeneous physics that may be involved. Nothing like we have for VLSI.

Thank you all very much! This is indeed a very special day for me!

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2016: Jason L. Speyer *Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Jason L. Speyer** received a B.S. in aeronautics and astronautics from MIT, Cambridge and Ph.D. in applied mathematics from Harvard University, Cambridge, MA. He is the Ronald and Valerie Sugar Distinguished Professor in Engineering in the Mechanical and Aerospace Engineering Department and the Electrical Engineering Department, UCLA. He was the Harry H. Power Professor in Engineering Mechanics, University of Texas, Austin from 1976-1990. His industrial experience from 1960-1976 includes research at Boeing, Raytheon, Analytical Mechanics Associated, and the Charles Stark Draper Laboratory. He was a Senior Weizmann Fellow, Department of Mathematics, Weizmann Institute of Science in the (September, 1972- August, 1973), the Lady Davis Professor, Department of Aeronautics, Technion-Israel Institute of Technology (February 1983-June 1983), and the Jerome C. Hunsaker Visiting Professor of Aeronautics and Astronautics, Massachusetts Institute of Technology (1989-1990). He was awarded an Honorary Doctorate from the Technion (2013). He coauthored, with W. H. Chung, *Stochastic Processes, Estimation, and Control* (SIAM, 2008), and coauthored, with D. H. Jacobson, *Primer on Optimal Control Theory* (SIAM, 2010). He served as Associate Editor for Technical Notes and Correspondence (1975–1976) and Stochastic Control (1978–1979), *IEEE Transactions on Automatic Control*, for *AIAA Journal of Guidance, Control, and Dynamics *(1977–1978), and for* Journal of Optimization Theory and Applications* (1981-present). As the Principal Investigator, the *NASA Public Service Group Achievement Award* was given to *UCLA Autonomous Vehicle System Instrumentation Laboratory* (2002) for exceptional service, commitment, and dedication toward the successful development of the Dryden Flight Research Center Autonomous Flight Formation project. He was General Chairman for the 2004 American Control Conference and Program Chairman for the 1987 American Controls Conference. He is a life fellow of the IEEE and fellow of the AIAA and was awarded the AIAA Mechanics and Control of Flight Award, AIAA Dryden Lectureship in Research, Air Force Exceptional Civilian Decoration (1991 and 2001), IEEE Third Millennium Medal, AIAA Guidance, Navigation, and Control Award, and a member of the National Academy of Engineering.

**Charles Stark**)

**Draper**, whose second volume of his three sequence series on Instrument Engineering (1952) was one the first books on what we know as Classical Control covering such topics as

**[1]****Evens**root locus,

**Bode**plots, Nyquist criterion, and

**Nichols**charts. Doc

**Draper**instituted an undergraduate course in classical control that I took my junior year. This inspired me to take a graduate course and write my undergraduate thesis in controls.

**Richard Bellman**for global sufficiency of an optimal trajectory and the Pontryagin Maximum principle inspired by the deficiency of dynamic programing to solve certain classes of optimization problems. The Bushaw problem of determining the minimum time to the origin of a double integrator was just such a problem, since the optimal return function in dynamic programing is

*not*differentiable at the switching curve and the Bellman theory did not apply. Interestingly, for my bachelor’s thesis I applied the results of the Bushaw problem to the minimum time problem of bringing the yaw and yaw rate of an aircraft to the origin. However, at that time I had no idea about the ramification of the Bushaw problem to optimization theory. I also learned of the work of

**Rudolf**

**Kalman**in estimation, the work of

**Arthur Bryson**and Henry Kelley in the development of numerical methods for determining optimal constrained trajectories, and J. Halcombe (Hal) Laning and Richard Battin on the determination of orbits for moon rendezvous.

**Art Bryson**was a consultant. There, I worked with a student of Bryson, Walter Denham. We were contracted by MIT’s Instrumentation Laboratory, monitored by Richard Battin, to enhance the Apollo autonomous navigation system over the trans-Lunar orbit. We developed a scheme for determining the optimal angle-measurement sequence between the best stars in a catalogue and near and far horizons of the Earth or the Moon using a sextant. This angle-measurement sequence minimized some linear function of the terminal value of the error covariance of position and velocity near the Earth or Moon. Our optimization scheme, which required a matrix dynamic constraint, seemed to be a first. This scheme, used in the Apollo autonomous navigation system, was tested on Apollo 8, and used on every mission thereon. My next task at Raytheon was working on neighboring optimal guidance scheme. This work was with

**Art Bryson**and

**John Breakwell**. I remember travelling to Lockheed’s Palo Alto Research Laboratory and meeting with John, the beginning of a long and delightful collegial relationship.

**Art Bryson**to take me on as a graduate student at Harvard, supported by the Raytheon Fellowship program. To understand the intellectual level I had to contend with, on my doctorial preliminary exam committee, three of the four examiners were recipients of the Richard E. Bellman Control Heritage Award;

**Art Bryson, Larry (Yu-Chi) Ho,**and

**Bob (Kumpati) Narendra,**all of whom have been my life time colleagues. I was also fortunate to take a course taught by

**Rudy Kalman**. Surprisingly, he taught many of the controls areas he had pioneered, except filtering for Gauss-Markov systems (the Kalman filter); the Aizerman conjecture, the Popov criterion and Lyopunov functions, duality in linear systems, optimality for linear-quadratic systems, etc. After finishing my PhD thesis on optimal control problems with state variable inequality constraints, I returned to Raytheon. Fortunately,

**Art Bryson**made me aware of some interest at Raytheon in using modern control theory for developing guidance laws for a new missile. At Raytheon’s Missile Division I worked with Bill O’Halloran on the homing missile guidance system where Bill worked on development of the Kalman filter and I worked on the development of the linear-quadratic

*closed-form*guidance gains that had to include the nonminimal phase autopilot. This homing missile, the Patriot missile system, appears to be the first fielded system using modern control theory.

[1] Boldface names are recipients of the Richard E. Bellman Control Heritage Award.

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2015: Thomas F. Edgar*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Thomas F. Edgar**is the George T. and Gladys H. Abell Chair in Chemical Engineering at the University of Texas at Austin and Director of the UT Energy Institute. For over 40 years, Edgar has concentrated his academic work in process modeling, control, and optimization, and has published over 450 articles and book chapters in the above fields applied to separations, chemical reactors, energy systems, and semiconductor manufacturing. His research has focused on control theory and computation for nonlinear and large-scale systems where he has supervised more than 80 Ph.D. students. Dr. Edgar is a Fellow of the International Federation of Automatic Control (IFAC), and has received a number of major AIChE research, education, and service awards. Dr. Edgar is a member of the U.S. National Academy of Engineering and won the AACC Ragazzini Education Award in 1992. He served as the 1997 President of AIChE and was President of the American Automatic Control Council between 1989 and 1991. He co-directs the Texas-Wisconsin-California Control Consortium (TWCCC), which is supported by 12 companies and involves six faculty members from UT, UW, and USC. TWCCC has been very effective in bridging control theory and industrial practice and has been responsible for many advances in multivariable control, performance monitoring, fault detection, identification, and real-time optimization that have been applied by chemical, semiconductor, and energy companies during the past 20 years.

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2014: Dimitri P. Bertsekas*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Dimitri P. Bertsekas'** undergraduate studies were in engineering at the National Technical University of Athens, Greece. He obtained his MS in electrical engineering at the George Washington University, Wash. DC in 1969, and his Ph.D. in system science in 1971 at the Massachusetts Institute of Technology

Dr. Bertsekas has held faculty positions with the Engineering-Economic Systems Dept., Stanford University (1971-1974) and the Electrical Engineering Dept. of the University of Illinois, Urbana (1974-1979). Since 1979 he has been teaching at the Electrical Engineering and Computer Science Department of the Massachusetts Institute of Technology (M.I.T.), where he is currently McAfee Professor of Engineering. He consults regularly with private industry and has held editorial positions in several journals. His research at M.I.T. spans several fields, including optimization, control, large-scale computation, and data communication networks, and is closely tied to his teaching and book authoring activities. He has written numerous research papers, and fifteen books, several of which are used as textbooks in MIT classes

Professor Bertsekas was awarded the INFORMS 1997 Prize for Research Excellence in the Interface Between Operations Research and Computer Science for his book "Neuro-Dynamic Programming" (co-authored with John Tsitsiklis), the 2000 Greek National Award for Operations Research, the 2001 ACC John R. Ragazzini Education Award, and the 2009 INFORMS Expository Writing Award. In 2001, he was elected to the United States National Academy of Engineering for "pioneering contributions to fundamental research, practice and education of optimization/control theory, and especially its application to data communication networks.

Dr. Bertsekas' recent books are "Introduction to Probability: 2nd Edition" (2008), Convex Optimization Theory (2009), "Dynamic Programming and Optimal Control, Vol. II: Approximate Dynamic Programming" (2012), and "Abstract Dynamic Programming" (2013), all published by Athena Scientific.

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2013: A. Stephen Morse*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**A. Stephen Morse** was born in Mt. Vernon, New York. He received a BSEE degree from Cornell University, MS degree from the University of Arizona, and a Ph.D. degree from Purdue University. From 1967 to 1970 he was associated with the Office of Control Theory and Application (OCTA) at the NASA Electronics Research Center in Cambridge, Mass. Since 1970 he has been with Yale University where he is presently the Dudley Professor of Engineering. His main interest is in system theory and he has done research in network synthesis, optimal control, multivariable control, adaptive control, urban transportation, vision-based control, hybrid and nonlinear systems, sensor networks, and coordination and control of large grouping of mobile autonomous agents. He is a Fellow of the IEEE, a past Distinguished Lecturer of the IEEE Control System Society, and a co-recipient of the Society's 1993 and 2005 George S. Axelby Outstanding Paper Awards. He has twice received the American Automatic Control Council's Best Paper Award and is a co-recipient of the Automatica Theory/Methodology Prize. He is the 1999 recipient of the IEEE Technical Field Award for Control Systems. He is a member of the National Academy of Engineering and the Connecticut Academy of Science and Engineering.

President Rhinehart, Lucy, Danny, fellow members of the greatest technological field in the world, I am to, say the least, absolutely thrilled and profoundly humbled to be this years recipient of the Richard E. Bellman Control Heritage Award. I am grateful to those who supported my nomination, as well to the American Automatic Control Council for selecting me.

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2012: Arthur J. Krener*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Arthur J. Krener **received the PhD in Mathematics from the University of California, Berkeley in 1971. From 1971 to 2006 he was at the University of California, Davis. He retired in 2006 as a Distinguished Professor of Mathematics. Currently he is a Distinguished Visiting Professor in the Department of Applied Mathematics at the Naval Postgraduate School. His research interests are in developing methods for the control and estimation of nonlinear dynamical systems and stochastic processes.

Professor Krener is a Life Fellow of the IEEE, a Fellow of IFAC and of SIAM. His 1981 IEEE Transactions on Automatic Control paper with Isidori, Gori-Giorgi and Monaco won a Best Paper Award. The IEEE Control Systems Society chose his 1977 IEEE Transactions on Automatic Control paper with Hermann as one of 25 Seminal Papers in Control in the last century. He was a Fellow of the John Simon Guggenheim Foundation for 2001-2. In 2004 he received the W. T. and Idalia Reid Prize from SIAM for his contributions to control and system theory. He was the Bode Prize Lecturer at 2006 IEEE CDC and in 2010 he received a Certificate of Excellent Achievements from IFAC. His research has been continuously funded since 1975 by NSF, NASA, AFOSR and ONR.

In 1988 he founded the SIAM Activity Group on Control and Systems Theory and was its first Chair. He was again Chair of the SIAG CST in 2005-07. He chaired the first SIAM Conference on Control and its Applications in 1989 and the same conference in 2007 both in San Francisco. He also co-chaired the IFAC Nonlinear Control Design Symposium held at Lake Tahoe in 1996. He has served as an Associate Editor for the SIAM Journal on Control and Optimization and for the SIAM book series on Advances in Design and Control.

It is a honor to receive the 2012 Richard E. Bellman Control Heritage Award. I am deeply humbled to join the very distinguished group of prior winners. At this conference there are so many people whose work I have admired for years. To be singled out among this group is a great honor.

I did not know Richard Bellman personally but we are all his intellectual descendants. Years ago my first thesis problem came from Bellman and currently I am working on numerical solutions to Hamilton-Jacobi-Bellman partial differential equations.

I began graduate school in mathematics at Berkeley in 1964, the year of the Free Speech Movement. After passing my oral exams in 1966, I started my thesis work with R. Sherman Lehman who had been a postdoc with Bellman at the Rand Corporation in the 1950s. Bellman and Lehman had worked on continuous linear programs also called bottleneck problems in Bellman’s book on Dynamic Programming. These problems are dynamic versions of linear programs, with linear integral transformations replacing finite dimensional linear transformations. At each frozen time they reduce to a standard linear program. Bellman and Lehman had worked out several examples and found that often the optimal solution was basic, at each time an extreme point of the set of feasible solutions to the time frozen linear program. These extreme points moved with time and the optimal solution would stay on one moving extreme point for awhile and then jump to another. It would jump from one bottleneck to another.

Lehman asked me to study this problem and find conditions for this to happen. We thought that it was a problem in functional analysis and so I started taking advanced courses in this area. Unfortunately about a year later Lehman had a very serious auto accident and lost the ability to think mathematically for some time. I drifted, one of hundreds of graduate students in Mathematics at that time. Moreover, Berkeley in the late 1960s was full of distractions and I was distractable. After a year or so Lehman recovered and we started to meet regularly. But then he had a serious stroke, perhaps as a consequence of the accident, and I was on my own again.

I was starting to doubt that my thesis problem was rooted in functional analysis. Fortunately I had taken a course in differential geometry from S. S. Chern, one of the pre-eminent geometers of his generation. Among other things, Chern had taught me about the Lie bracket. And one of my graduate student colleagues told me that I was trying to prove a bang-bang theorem in Control Theory, a field that I had never heard of before. I then realized that my problem was local in nature and intimately connected with flows of vector fields so the Lie bracket was an essential tool. I went to Chern and asked him some questions about the range of flows of multiple vector fields. He referred me to Bob Hermann who was visiting the Berkeley Physics Department at that time.

I went to see Hermann in his cigar smoked-filled office accompanied by my faithful companion, a German Shepherd named Hogan. If this sounds strange, remember this was Berkeley in the 1960s. Bob was welcoming and gracious, he gave me galley proofs of his forthcoming book which contained Chow’s theorem. It was almost the theorem that I had been groping for. Heartened by this encounter I continued to compute Lie brackets in the hope of proving a bang-bang theorem.

Time drifted by and I needed to get out of graduate school so I approached the only math faculty member who knew anything about control, Stephen Diliberto. He agreed to take me on as a thesis student. He said that we should meet for an hour each week and I should tell him what I had done. After a couple of months, I asked him what more I needed to do to get a PhD. His answer was ”write it up”. My ”proofs” fell apart several times trying to accomplish this. But finally I came up with a lemma that might be called Chow’s theorem with drift that allowed me to finish my thesis.

I am deeply indebted to Diliberto for getting me out of graduate school. He also did another wonderful thing for me, he wrote over a hundred letters to help me find a job. The job market in 1971 was not as terrible as it is today but it was bad. One of these letters landed on the desk of a young full professor at Harvard, Roger Brockett. He had also realized that the Lie bracket had a lot to contribute to control. Over the ensuing years, Roger has been a great supporter of my work and I am deeply indebted to him.

Another Diliberto letter got me a position at Davis where I prospered as an Assistant Professor. Tenure came easily as I had learned to do independent research in graduate school. I brought my dog, Hogan, to class every day, he worked the crowds of students and boosted my teaching evaluations by at least a point. After 35 wonderful years at Davis, I retired and joined the Naval Postgraduate School where I continue to teach and do research. I am indebted to these institutions and also to the NSF and the AFOSR for supporting my career.

I feel very fortunate to have discovered control theory both for the intellectual beauty of the subject and the numerous wonderful people that I have met in this field. I mentioned a few names, let me also acknowledge my intellectual debt to and friendship with Hector Sussman, Petar Kokotovic, Alberto Isidori, Chris Byrnes, Steve Morse, Anders Lindquist, Wei Kang and numerous others.

In my old age I have come back to the legacy of Bellman. Two National Research Council Postdocs, Cesar Aguilar and Thomas Hunt, have been working with me on developing patchy methods for solving the Hamilton-Jacobi-Bellman equations of optimal control. We haven’t whipped the ”curse of dimensionality” yet but we are making it nervous.

The first figure shows the patchy solution of the HJB equation to invert a pendulum. There are about 1800 patches on 34 levels and calculation took about 13 seconds on a laptop. The algorithm is adaptive, it adds patches or rings of patches when the residual of the HJB equation is too large. The optimal cost is periodic in the angle. The second figure shows this. Notice that there is a negatively slanted line of focal points. At these points there is an optimal clockwise and an optimal counterclockwise torque. If the angular velocity is large enough then the optimal trajectory will pass through the up position several times before coming to rest there.

What are the secrets to success? Almost everybody at this conference has deep mathematical skills. In the parlance of the NBA playoffs which has just ended, what separates researchers is “shot selection” and ”follow through”. Choosing the right problem at the right time and perseverance, nailing the problem, are needed along with good luck and, to paraphrase the Beatles, ”a little help from your friends”.

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2011: Manfred Morari*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Manfred Morari** was appointed head of the Department of Information Technology and Electrical Engineering at ETH Zurich in 2009. He was head of the Automatic Control Laboratory from 1994 to 2008. Before that he was the McCollum-Corcoran Professor of Chemical Engineering and Executive Officer for Control and Dynamical Systems at the California Institute of Technology. He obtained the diploma from ETH Zurich and the Ph.D. from the University of Minnesota, both in chemical engineering. His interests are in hybrid systems and the control of biomedical systems. In recognition of his research contributions he received numerous awards, among them the Donald P. Eckman Award and the John R. Ragazzini Award of the Automatic Control Council, the Allan P. Colburn Award and the Professional Progress Award of the AIChE, the Curtis W. McGraw Research Award of the ASEE, Doctor Honoris Causa from Babes-Bolyai University, Fellow of IEEE and IFAC, the IEEE Control Systems Field Award, and was elected to the National Academy of Engineering (U.S.). Manfred Morari has held appointments with Exxon and ICI plc and serves on the technical advisory boards of several major corporations.

Usually when you are nominated for an award you know about it or – at least – you have a suspicion – for example, when somebody asks you for your CV, but you are sure that they are not interested in hiring you. This award came to me as a total surprise. Indeed I had written a letter of support for another most worthy candidate. So, when I received Tamer Başar’s email I thought that it was to inform me that this colleague had won. Who was actually responsible for my nomination? Several of my former graduate students! So, not only were they responsible for doing the work that qualified me for the award, they were even responsible for my getting it!

Over the course of my career I was fortunate to have worked with a fantastic group of people and I am very proud of them: 64 Phd Students to date and about 25 postdocs. 27 of them are holding professorships all over the world – from the Korean Advanced Institute of Science and Technology KAIST in the East to Berkeley and Santa Barbara in the West from the Norwegian Technical University and the U Toronto in the North to the Technion in Israel and the Instituto Tecnologico de Buenos Aires in the South. Many others are now in industry, about 15 in Finance, Management Consulting and Legal, holding positions of major responsibility. I regard this group of former co-workers as my most important legacy.

This award means a lot to me because of the awe-inspiring people who received it in the past. I remember Hendrik Bode receiving the inaugural award in 1979. I remember Rutherford Aris, one of my PhD advisors at the University of Minnesota receiving it in 1992. Aris had actually worked and published with Richard Bellman. I remember Harmon Ray receiving it in 2000, my colleague and mentor at the University of Wisconsin.

Receiving this award made me also reflect on what I felt our major contributions were in these 34 years since I started my career as an Asst. Prof at Wisconsin. In what way was our work important? I was reminded of a dinner conversation a few months back with a group of my former PhD students who had joined McKinsey after graduating from ETH. One of them told me that our group had supplied more young consultants to McKinsey Switzerland than any other institute of any university in Switzerland. He also talked informally about the results of a survey done internally on what may be the main traits characterizing a CEO. It is not charm. It is not tactfulness and sensitivity. It is not intelligence. The only common trait seems to be that in their past these CEOs headed a division that experienced unusual growth. For example, the CEO of a telecom company had headed the mobile phone division. All the CEOs seemed to have been at the right place at the right time.

Similar considerations may apply to doing research and to heading a research group. Richard Hamming, best known for the Hamming code and the Hamming window, wrote in a wonderful essay: “If you are to do important work then you must work on the right problem at the right time and in the right way. Without any one of the three, you may do good work but you will almost certainly miss real greatness….”

So, what are the right problems? Eric Sevareid, the famous CBS journalist once quipped: “The chief cause of problems is solutions.” We were never interested in working on problems solely for their mathematical beauty. We always wanted to solve real practical problems with potential impact. Several times we were lucky to be standing at a turning point, ready to embark on a new line of research before the community at large had recognized it. Let me share with you three examples.

Around 1975, when I started my PhD at the University of Minnesota, interest in process control was just about at an all-time low. In 1979 this conference, which was then called the Joint Automatic Control Conference, had barely 300 attendees. The benefits of optimal control and the state space approach had been hyped so much for more than a decade that disillusionment was unavoidable. Many people advised me not to commence a thesis in process control. But my advisor George Stephanopoulos convinced me that the reason for all the disappointment was that people had been working on the wrong problem. The problem was not how to design controllers for poorly designed system but how to design systems such that they are easy to control. The work that was started at that time by us and several other groups provided valuable insights that are in common use today and set off a whole research movement with special sessions, special journal issues and even separate workshops and conferences.

The second example is our work on Internal Model Control (IMC) and Robust Control. In the early 1980s the term “robust control” did not exist or, at least, it was not widely used and accepted. From our application work and influenced by several senior members of our community we had become convinced that model uncertainty is a critical obstacle affecting controller design. We discovered singular values and the condition number as important indicators before we learned that these were established mathematical quantities with established names. In 1982 at a workshop in Interlaken I met John Doyle, Gunter Stein and essentially everybody else who started to push the robust control agenda. Indeed it was there that Jürgen Ackerman made the researchers in the West aware of the results of Kharitonov. A year later I went to Caltech, John Doyle followed soon afterwards and an exciting research collaboration commenced that lasted for almost a decade. We also cofounded the Control and Dynamical Systems option/department at that time.

The third example is our more recent work on Model Predictive Control (MPC) and Hybrid Systems. As I returned to Switzerland 17 years ago, I moved from a chemical to an electrical engineering department. I was thrown into a new world of systems with time constants of micro- or even nanoseconds rather than the minutes or hours that I was used to. So we set out to dispel the myth that MPC was only suited to slow process control problems and showed that it could even be applied to switched power electronics systems. Through this activity in parallel with a couple of other groups in the world, among them the group of Graham Goodwin, we started this era of “fast MPC” and contributed to the spread of MPC to just about every control application area.

I would never claim that in the mentioned areas we made the most significant contributions and some of the results may even seem trivial to you now, but we were there at the beginning. The Hungarian author Arthur Koestler remarked that “the more original a discovery, the more obvious it seems afterwards”

Not withstanding this over-the-hill award that I received today and the mandatory retirement age in Switzerland I fully intend to strive to match these contributions in the coming years – together with my students, of course.

I want to close my remarks quoting from an interview Woody Allen gave last year. When he was asked “How do you feel about the aging process?” he replied: “Well, I’m against it. I think it has nothing to recommend it.”

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2010: Dragoslav D. Šiljak*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Dragoslav D. Šiljak** received his doctorate degree (D.Sc.) in Electrical Engineering from the University of Belgrade, Serbia, in 1963. He joined the Department of Electrical Engineering at the Santa Clara University in 1964, where he is presently the Benjamin and Mae Swig University Professor.

Upon the arrival to Santa Clara, Dr. Šiljak continued his research on parameter space methods for robust control design, which he presented in a monograph Nonlinear Systems: The Parameter Analysis and Design (Wiley, 1969). He established collaboration with control groups at NASA Ames Research Center and Marshal Space Flight Center, which focused on parameter methods for control design of space vehicles.

In the early 1970s, Dr. Šiljak introduced the concept of connective stability of large-scale dynamic systems within the framework of comparison principle and vector Lyapunov functions. He applied the concept to a wide variety of models, in areas as diverse as population biology, arms race, large space structures, competitive equilibrium in mathematical economics, and electric power systems. Within the same framework, he introduced robust decentralized feedback and developed graph-theoretic methods for decentralization and stabilization of uncertain large-scale systems. These concepts and results appeared in a monograph entitled Large-scale Dynamic Systems: Stability and Structure (North Holland, 1978) which, after almost thirty years, was reprinted as a paperback by Dover Publications (2007).

In the 1980s, Dr. Šiljak and his collaborators developed a large number of new and highly original concepts and methods for the decentralized control of uncertain large-scale interconnected systems. Structurally fixed modes, multiple controllers for reliable stabilization, decentralized optimization, and hierarchical, epsilon, and overlapping decompositions laid the foundation for a powerful and efficient approach to a broad set of problems in control design of large complex systems. This development was reported in a comprehensive monograph Decentralized Control of Complex Systems (Academic Press, 1991).

Over the past two decades, Dr. Šiljak and his collaborators have raised the research on complex systems to a higher level. Decomposition schemes involving inputs and outputs have been developed for and applied to complex systems of unprecedented dimensions. Dynamic graphs have been defined in a linear space as one parameter groups of transformations of the graph space into itself. This new mathematical entity opened the possibility to include continuous Boolean networks in a theoretical study of gene regulation and modeling of large-scale organic structures. These new and exciting developments have been published in a recent monograph Control of Complex Systems: Structural Constraints and Uncertainty (Springer, 2010, coauthor A. I. Zečević).

Dr. Šiljak’s research on large complex systems has involved a large number of collaborators, including researchers and students who came from all over the world to Santa Clara to study complex dynamic systems. Over the years, this research has been generously supported by NASA, NSF, DOE, and DARPA.

In 1981, Šiljak served as a Distinguished Scholar of the Japan Society for Promotion of Science, lecturing on large-scale systems at major universities and companies in Japan. He was selected as a Distinguished Professor of the Fulbright Foundation in 1984, and in 1985 became an Honorary Member of the Serbian Academy of Arts and Sciences. In 1986, he served as a Director of the NSF Workshop “Challenges to Control: A Collective View,” organizing a forum of top control scientists at Santa Clara University for the purpose of assessing the state of the art of the field and outline directions of research. In 1991, he gave a week-long seminar on decentralized control at the Seoul National University as a Hoam Distinguished Foreign Scholar. In 2001, he became a Life Fellow of the IEEE. He has presented many plenary talks at conferences and served on editorial boards of a variety of journals in the fields of applied mathematics and engineering.

**July 1, 2010. Baltimore, MD**

I am exceedingly happy to receive the Richard Bellman Control Heritage Award. I am thankful to the American Automatic Control Council for recognizing my work as worthy of this award, and I am deeply humbled when I consider the previous recipients of the award.

My first thanks go to my dear wife Dragana who put up for a long time with a workaholic husband with an oversized ambition. I am grateful to Santa Clara University and, in particular, to the School of Engineering for providing institutional support to our research. I am exceedingly thankful to many people from all around the world who came to Santa Clara to work on our projects as fellow researchers on an exploratory journey; and what a journey it has been!

At this occasion, it gives me a great pleasure to recall my visit to University of Southern California and my brief encounter with Professor Bellman. After my talk, he invited me to his office, and among myriad of his interests, he chose to talk with me about his recent work in Pharmacokinetics. At that time, I was deeply into the competitive equilibrium in economics, and we had a very stimulating discussion on the connection of the two fields via the Metzler matrix which I have been using since then in a wide variety of models to this very day.

Looking at this award in a prudential light, my obtaining this award is as much a compliment to the Control Council as it is to me. My winning of this award at Santa Clara University, which is not a research 1 university but prides itself as an excellent teaching institution, proves that the system is open, and that any of you wherever you are can win this award solely by the merit of your research.

I recall when at eighteen I made the Yugoslav Olympic Water Polo Team for the 1952 Helsinki Olympic Games. We won all our games except the final one, which ended in a draw. At that time, there were no overtimes and penalty kicks; the winner was determined by the cumulative goal ratio. I continued playing water polo, but did not make the team for the 1956 Melbourne games; I broke my right hand and stayed home. I kept playing on and in 1960 made the team for the Rome Olympics. We did not win a medal in Rome, let alone the gold. At that point I was already a committed researcher in control systems. I continued the research for many years and to borrow from a song by Neil Young:

"I kept searching for a heart of gold, and I was getting old ... "

Today I found a heart of gold. Thank you all very much for your attention, and God bless!

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2009: George Leitmann *Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**George Leitmann** is a Professor Emeritus of engineering science and associate Dean for International Relations at the University of California, Berkeley. His 50+year Berkeley career has included everything from research and teaching to serving as the first ombudsman in the UC system. During seven years at the US Naval Ordnance Test Station, China Lake, he worked mostly on rocket trajectory optimization and testing. He joined the Berkeley faculty in 1957. With the beginning of his appointment at UC in 1957 he began to extend his work in variational calculus and optimal control theory, both in theory and applications, some of which is contained in an introductory text (1967) and two edited volumes (1965 and '69), later expanded to a basic text (1981). This work was awarded the Goddard aerospace and the flight mechanics awards of the American Institute of Aeronautics and Astronautics. That in turn led to research in dynamical game theory and its applications, which can be found in three books (1966, 1967 and 1974) and numerous edited volumes. In the early 1970's and extending into the 1990's, this led to research on robust control with applications to uncertain systems in engineering, science, economics and management for which he was awarded the Levy medal of the Franklin Institute and more recently the first Isaacs Award of the International Society of Dynamic Games. He is a member of the National Academy of Engineering as well as of six foreign academies of science and engineering, and he holds three honorary doctorates. Since emeritation in 1991, he has returned to earlier work in the calculus of variations, especially numerous extensions of a 1967 paper, which are based on the methodology of equivalent problem solutions and regularizing transformations, which simplify the classical approach of Caratheodory. Lately, he has also turned to topics of more recent interest such as an analysis of the dynamics of terrorism. Professionally, he edited or co-edited over a dozen journals including the largest and arguably the most prestigious journal of mathematical analysis and applications founded by Richard Bellman, the latter as editor for sixteen years. Since so many of Professor Leitmann's doctoral students and post-doctoral fellows were international ones and his interests always transcended the US border, he became very involved with international collaborations, was awarded an Alexander von Humboldt Prize in 1980 and subsequently the A. von Humboldt medal and the Werner Heisenberg medal of the A. von Humboldt Foundation.

**June 11, 2009. St. Louis, MO**

First of all, I wish to express my sincere thanks to the American Automatic Control Council for bestowing on me the Bellman Control Heritage Award. This great honor was completely unexpected so that my gratitude is very deep indeed. I would like to use this rare opportunity to say a few words about a topic which has concerned me for some time, namely, the question Who did what first?. In so doing, I shall relate two examples of which the first is especially a propos since it involves the patron of the award, Richard Bellman, as well as Rufus Isaacs, both long-time friends of mine. When I attended the 1966 International Congress of Mathematicians in Moscow, where Dick was a plenary speaker and Rufus was to present a paper entitled Differential games and dynamic programming, and what the latter can learn from the former, the meeting was buzzing with excitement about an upcoming confrontation between two well known American mathematicians. And indeed, when Rufus presented his paper it was his take on the discovery of the Principle of Optimality which, in his view, appeared after the in-house publication of three RAND reports on differential games, and which appeared to be just a one-player version of his Tenet of Transition. The result of this implied accusation of plagiarism had two unhappy consequences. I had lunch with Dick on that day. He was deeply hurt, so much so that he was near tears. Equally unfortunate was the effect on Rufus who devoted much of his remaining time to trying to prove the priority of his discovery instead of continuing to produce new and important research of which his fertile mind was surely capable. The second example is a much happier one. In the mid-1960's I published a brief paper in which I proposed constructive sufficiency conditions for extremizing a class of integrals by solving an equivalent problem by inspection. It was not until 1999 that I returned to this subject at the urging of a Canadian colleague. After revisiting the original 1967 paper, I published a generalization in JOTA in 2001. On presenting these results at my 75th birthday symposium in Sicily in 2001, Pierre Bernhard remarked that my approach seemed to be related to Caratheodory's in his 1935 text on the calculus of variations and partial differential equations, first translated into English in the mid-1960's and not known to me. And indeed, in 2002, Dean Carlson published in JOTA a paper in which he discussed a relation between the two approaches in that both are based on the equivalent problem methodology. Caratheodory obtained an equivalent problem by allowing for a different integrand, and I obtained an equivalent problem by the use of transformed variables. Dean then proposed a generalization by combining the two approaches. A happy consequence of this paper has been and continues to be a fruitful collaboration which has resulted in many extensions and applications, e.g., to classes of optimal control and differential game problems, to multiple integrals, and to economic problems, the most recent concerned with differential constraints (state equations) and presented just a couple of weeks ago at the 15th International Workshop on Dynamics and Control. A particularly interesting discussion and some generalizations by Florian Wagener may be found in the July 2009 issue of JOTA. Thus, Caratheodory received his well deserved citation and I learned a great deal, allowing me to make some small contributions to optimization theory.

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2008: Pravin Varaiya*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Pravin Varaiya** is Nortel Networks Distinguished Professor in the Department of Electrical Engineering and Computer Sciences at the University of California, Berkeley. From 1975 to 1992 he was also Professor of Economics at Berkeley. During 1994-1997 he was Director of California PATH, a multi-university research program concerned with the development and use of technology to help solve California’s transportation problems. His current research is concerned with sensor networks, transportation, and hybrid systems. His earlier research dealt with stochastic control, communication networks, discrete event and large scale systems. Varaiya has held a Guggenheim Fellowship and a Miller Research Professorship. He has received two Honorary Doctorates, and the Field Medal and Bode Prize of the IEEE Control Systems Society. He is a Fellow of IEEE, a member of the National Academy of Engineering, and a Fellow of the American Academy of Arts and Science. He is on the editorial board of Transportation Research--C. He has co-authored three books and 300 technical papers. The second edition of High-Performance Communication Networks (with Jean Walrand) was published by Morgan-Kaufmann in 2000. “Structure and Interpretation of Signals and Systems” (with Edward Lee) was published in 2003 by Addison-Wesley.

**June 12, 2008. Seattle, WA**

It is an honor to receive the Bellman Award. I am sure the Award Committee received many outstanding nominations, and I thank the Committee for selecting me. I was invited to make a few remarks, so long as I did not exceed five minutes. I will point out some landmarks along my intellectual journey. The young people among you may find it of some interest. I came to Berkeley as a graduate student in 1960. I owe a great deal to Professor Lotfi Zadeh who was my PhD adviser and who has been a mentor to me ever since. Much of my intellectual development came from interaction with visitors and students. Karl Astrom visited me in the early 1960s. His paper with Bohlin on system identification became for me a standard of research quality and research exposition. Another significant visitor was Bill Root. Bill showed me how to use mathematics in the analysis of communication systems, and he introduced me to information theory.

**Stochastic Systems**

There was a buzz at the time about white noise and martingales. Gene Wong was talking about it, as was Moshe Zakai. Tyrone Duncan was visiting. Ty de-mystified the buzz for me. He taught me how to think about stochastic systems. Thus began my lifelong attraction towards randomness. Sanjoy Mitter, who I first met about that time, reinforced that attraction. Sanjoy became a lifelong friend, for which I am very grateful.

Mark Davis was the first in a sequence of brilliant PhD students in stochastic systems. Mark discovered the deep relation between martingales and optimum decisions. Rene Boel, Jan van Schuppen, and Gene Wong found that martingales were also key to point processes as well as Ito processes. Jean Walrand grasped this insight and developed it into an outstanding thesis on queuing networks. Venkat Anantharam knew little or nothing about probability theory when he began his PhD. I still recall how much he impressed me with his spectacular work on multi-armed bandits. The third in this group was Vivek Borkar. Vivek was the most quiet, but equally stunning.

This was when P.R. Kumar visited Berkeley. He is the first of the next generation that I got to know as a friend. I have become a fan of his, along with so many others. Intellectual life moves in circles. Borkar and Kumar re-connected me with Karl Astrom, this time through his paper with Wittenmark.

**Networking**

Jean Walrand introduced me to computer communication networks. This has continued to be an area of research for the past twenty years. We've had outstanding students, who have gone on to brilliant careers. Sri Kumar, then at Northwestern, Jean Walrand and I got to know each other through our interest in networking.

**Power**

I learned power engineering in undergraduate school. But then I lost contact with the field, until years later when Felix Wu joined our faculty. Eyad Abed, Fathi Salem and Shankar Sastry wrote their dissertations on difficult questions in nonlinear systems, inspired by problems of power systems. I lost contact with the field once again, until deregulation became the rage in California. Once again Felix recruited me. Felix Wu, Shmuel Oren of IEOR, Pablo Spiller of the Business School, and I joined forces to save California from the clutches of the utilities. We developed a provably good deregulation strategy. The strategy was not adopted.

**Wireless**

Ahmad Bahai and Andrea Goldsmith sparked my interest in wireless communications. They have become stars. They inspired my very recent students, Mustafa Ergen and Sinem Coleri.

**Hybrid**

In the late sixties, Noam Chomsky came to Berkeley and gave a lecture on formal languages. Chomsky's talk opened up a whole world for me. I spent a lot of time learning recursive functions, Turing machines, and Godel's theory. Walt Burkhard wanted to do a thesis on space-time complexity of recursive functions, and he helped consolidate what I had learned. However, my involvement with that subject declined.

My interest was revived by the Wonham-Ramadge paper on discrete-event systems, while Joseph Sifakis, Tom Henzinger and others began the study of time automata. These developments combined to create the area of Hybrid Systems. My students Anuj Puri and Alex Kurzhansky obtained some outstanding results in Hybrid Systems.

**Transportation**

My flirtation with transportation began 30 years ago when I taught urban economics. Mario Ripper was my first doctoral student in transportation planning. My interest then waned. In 1990, Steve Shladover helped spark a national, indeed worldwide, interest in automated highways. Berkeley became a leading research center in highway automation, culminating in a full demonstration in 1997 in San Diego. It was very exciting to work with an interdisciplinary group of experts to build something all the way from theory to demonstration.

Since I could not wait for 25 years before automated highways became practical, my attention shifted to today's highways. My student Karl Petty built the PeMS system, which is now world-renowned as a repository of highway data. Roberto Horowitz and I are now developing a control system for the management of highways. It might become an important follow-on to the PeMS system.

Let me conclude with a remark on Richard Bellman, whom I met in the late sixties. Bellman was a renowned mathematician with contributions in many, many areas. I learned two things from him. First, over the years I continue to marvel at the significance of the optimality principle in the form of the verification theorem, which I have used in many contexts. Second and more important, I learned that good theory is very practical.

Thank you very much for being such courteous listeners.

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2007: Sanjoy Mitter*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Dr. Sanjoy K. Mitter** is Professor of Electrical Engineering at the Laboratory for Information and Decision Systems at the Massachusetts Institute of Technology (MIT). Prior to 1965, he worked as a research engineer at Brown Boveri & Co. Ltd., Switzerland (now ASEA Brown Boveri) and Battelle Institute in Geneva, Switzerland. He taught at Case Western Reserve University from 1965-1969. He joined MIT in 1969 where he has been a Professor of Electrical Engineering since 1973. He was the Director of the MIT Laboratory for Information and Decision Systems from 1981-1999. He has also been a Professor of Mathematics at the Scuola Normale, Pisa, Italy from 1986-1996. Professor Mitter’s other visiting positions include Imperial College, London; University of Groningen, Holland; INRIA, France; Tata Institute of Fundamental Research, India and ETH, Zürich, Switzerland. At the University of California, Berkeley, he was the McKay Professor in March 2000 and the Russell Springer Professor from September 2003 to January 2004. He was a Visiting Professor at the California Institute of Technology in January 2005. He is a Fellow of the IEEE and winner of the 2000 IEEE Control Systems Award. In addition, he is a Member of the National Academy of Engineering and is associate editor of several journals. He is a Foreign Member of Istituto Veneto di Scienze, Lettere de Arti. Professor Mitter received his doctor’s degree in 1965 from the Imperial College of Science and Technology, University of London.

**July 12, 2007. New York, NY**

It is a great honor for me to receive the Bellman Award—quite undeserved I believe, but I decided not to emulate Gregory Perelman by refusing to accept the award. I might however follow his footsteps (apparently he has stopped doing Mathematics) and concentrate only on the more conceptual and philosophical aspects of the broad field of Systems and Control.

On an occasion like this it is perhaps appropriate to say a few words about the seminal contributions of Richard Bellman. As we all know, he is the founder of the methodological framework of Dynamic Programming, probably the only general method of systematically and optimally dealing with uncertainty, when uncertainty has a probabilistic description, and there is an underlying Markov structure in the description of the evolution of the system. It is often mentioned that the work of Bellman was not as original as would appear at first sight. There was, after all, Abraham Wald’s seminal work on Optimal Sequential Decisions and the Carat´eodory view of Calculus of Variations, intimately related to Hamilton–Jacobi Theory. But the generality of these ideas, both for deterministic optimal control and stochastic optimal control with full or partial observations, is undoubtedly due to Bellman. Bellman, I believe, was also the first to present a precise view of stochastic adaptive control using methods of dynamic programming. Now, there are two essential steps in invoking Dynamic Programming, namely, invariant embedding whereby a fixed variational problem is embedded in a potentially infinite family of variational problems and then invoking the Principle of Optimality which states that any sub-trajectory of an optimal trajectory is necessarily optimal to characterize optimal trajectories. This is where the Markov structure of dynamic evolution comes into operation. It should be noted that there is wide flexibility in the invariant embedding procedure and this needs to be exploited in a creative way. It is this embedding that permits obtaining the optimal control in feedback form (that is a “control law” as opposed to open loop control).

The solution of the Partially-Observed Stochastic Control in continuous time leading to the characterization of the optimal control as a function of the unnormalized conditional density of the state given the observations via the solution of an infinite-dimensional Bellman–Hamilton–Jacobi equation is one of the crowning achievements of the Bellman view of stochastic control. It is worth mentioning that Stochastic Finance Theory would not exist but for this development. There are still open mathematical questions here that deserved further work. Indeed, the average cost problem for partially-observed finite-state Markov chains is still open—a natural necessary and sufficient condition for the existence of a bounded solution to the dynamic programming equation is still not available.

Much of my recent work has been concerned with the unification of theories of Communication and Control. More precisely, how does one bring to bear Information Theory to gain understanding of Stochastic Control and how does one bring to bear the theory of Partially-Observed Stochastic Control to gain qualitative understanding of reliable communication. There does not exist a straightforward answer to this question since the Noisy Channel Coding Theorem which characterizes the optimal rate of transmission for reliable communication requires infinite delay. The encoder in digital communication can legitimately be thought of as a controller and the decoder an estimator, but they interact in complicated ways. It is only in the limit of infinite delay that the problem simplifies and a theorem like the Noisy Channel Coding Theorem can be proved. This procedure is exactly analogous to passing to the thermodynamic limit in Statistical Mechanics.

In the doctoral dissertation of Sekhar Tatikonda, and in subsequent work, the Shannon Capacity of a Markov Channel with Feedback under certain information structure hypotheses can be characterized as the value function of a partially-observed stochastic control problem. This work in many ways exhibits the power of the dynamic programming style of thinking. I believe that this style of thinking, in the guise of a backward induction procedure, will be helpful in understanding the transmission capabilities of wireless networks. More generally, dynamic programming, when time is replaced by a partially ordered set, is a fruitful area of research.

Can one give an “information flow” view of path estimation of a diffusion process given noisy observations? An estimator, abstractly can be thought of as a map from the space of observations to a conditional distribution of the estimand given the observations. What is the nature of the flow of information from the observations to the estimator? Is it conservative or dissipative? In joint work with Nigel Newton, I have given a quite complete view of this subject. It turns out that the path estimator can be constructed as a backward likelihood filter which estimate the initial state combined with a fully observed stochastic controller moving in forward time starting at this estimated state solves the problem in the sense that the resulting path space measure is the requisite conditional distribution. The backward filter dissipates historical information at an optimal rate, namely that information which is not required to estimate the initial state and the forward control problem fully recovers this information. The optimal path estimator is conservative. This result establishes the relation between stochastic control and optimal filtering. Somewhat surprisingly, the optimal filter in a stationary situation satisfies a second law of thermodynamics.

What of the future? Undoubtedly we have to understand control under uncertainty in a distributed environment. Understanding the interaction between communication and control in a fundamental way will be the key to developing any such theory. I believe that an interconnection view where sensors, actuators, controllers, encoders, channels and decoders, each viewed abstractly as stochastic kernels, are interconnected to realize desirable joint distributions, will be the “correct” abstract view for a theory of distributed control. Except in the field of distributed algorithms, not much fundamental seems to be known here.

It is customary to end acceptance discourses on an autobiographical note and I will not depart from this tradition. Firstly, my early education at Presidency College, Calcutta, where I had the privilege of interacting with some of the most brilliant fellow students, decisively formed my intellectual make-up. Whatever culture I acquired, I acquired it at that time. At Imperial College, while I was doing my doctoral work, I was greatly influenced by John Florentin (a pioneer in Stochastic Control), Martin Clark and several other fellow students. I have also been fortunate in my association with two great institutions—MIT and the Scuola Normale, Pisa. I cannot overstate everything that I have learnt from my doctoral students, too many to mention by name—Allen gewidmet von denen ich lernte [Dedicated to all from whom I have learnt (taken from dedication of G¨unter Grass in “Beim H¨auten der Zwiebel” (“Peeling the Onion”))]. I find that they have extraordinary courage in shaping some half-baked idea into a worthwhile contribution. In recent years, my collaborative work with Vivek Borkar and Nigel Newton has been very important for me. I have great intellectual affinity with members of Club 34, the most exclusive club of its kind and I thank the members of this club for their friendship. There are many others whose intellectual views I share, but at the cost of exclusion let me single out Jan Willems and Pravin Varaiya. I admire their passion for intellectual discourse. Last, but not least, I thank my wife, Adriana, for her love and support. I am sorry she could not be here today. My acceptance speech is dedicated to her.

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2006: Tamer Başar*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Tamer Başar **is with the University of Illinois at Urbana-Champaign (UIUC), where he holds the positions of the Fredric G. and Elizabeth H. Nearing Endowed Professor of Electrical and Computer Engineering, Center for Advanced Study Professor, and Research Professor at the Coordinated Science Laboratory. He was born in Istanbul, Turkey, in 1946, and received B.S.E.E. degree from Robert College, Istanbul, in 1969, and M.S., M.Phil, and Ph.D. degrees from Yale University, in 1970, 1971 and 1972, respectively. He joined UIUC in 1981, after holding positions at Harvard University and Marmara Research Institute (Gebze, Turkey). He has published extensively in systems, control, communications, and dynamic games, with over 400 publications, including two books (with several editions)--one on dynamic noncooperative game theory (with G.J. Olsder), and the other one on H∞-optimal control (with P. Bernhard). He has made fundamental contributions to a diverse set of topics, including decision making under uncertainty; information structures, stochastic teams, and differential games; large scale systems; hierarchical and decentralized control; worst-case identification, estimation, and control; H∞-optimal control for linear and nonlinear systems; robust adaptive control and filtering; distributed computation; and routing, congestion control, and pricing in networks. His current research interests are in modeling and control of communication networks; control over heterogeneous networks; usage-constrained sensing, estimation and control; network economics; mobile and distributed computing; security and trustworthiness in computer networks; and risk-sensitive estimation and control. He has served in various capacities for several professional organizations, including IEEE, Control Systems Society (CSS), AACC, the International Federation of Automatic Control (IFAC), and the International Society of Dynamic Games (ISDG). He is currently the Editor-in-Chief of Automatica, Editor of the Birkhauser Series on Systems & Control: Foundations & Applications, Editor of the Annals of ISDG, and member of editorial and advisory boards of several international journals in control, wireless networks, and applied mathematics. He has received several awards and recognitions over the years, among which are the Medal of Science of Turkey (1993); Distinguished Member Award (1993), Axelby Outstanding Paper Award (1995) and Bode Lecture Prize (2004) of CSS; Millennium Medal of IEEE (2000); Tau Beta Pi Drucker Eminent Faculty Award of UIUC (2004); and the Outstanding Service Award (2005) and the Giorgio Quazza Medal (2005) of IFAC. He is a member of the National Academy of Engineering, a member of the European Academy of Sciences, a Fellow of IEEE, a Fellow of IFAC, a past president of CSS, and the founding president of ISDG.

**June 15, 2006. Minneapolis, MN**

I am honored to receive this most prestigious award and recognition by the American Automatic Control Council, named after Richard Ernest Bellman (the creator of "dynamic programming")---who has shaped our field and influenced through his creative ideas and voluminous multifaceted work the research of tens of thousands, not only in control, but also in several other fields and disciplines. In my own research, which has encompassed control, games, and decisions, I have naturally also been influenced by the work of Bellman (on dynamic programming), as well as of Rufus Isaacs (the creator of differential games) whose tenure at RAND Corporation (Santa Monica, California) partially overlapped with that of Bellman in the 1950s. I want to use the few minutes I have here to say a few words on those early days of control and game theory research (just a brief historical perspective), and Bellman's role in that development.

In a Bode Lecture I delivered (at the IEEE Conference on Decision and Control in the Bahamas) in December 2004, I had described how modern control theory was influenced by the research conducted and initiatives taken at the RAND Corporation in the early 1950s. RAND had attracted and housed some of the great minds of the time, among whom was also Richard Bellman, in addition to names like Leonard D. Berkovitz, David Blackwell, George Dantzig, Wendell Fleming, M.R. Hestenes, Rufus Isaacs, Samuel Karlin, John Nash, J.P. LaSalle, and Lloyd Shapley (to list just a few). These individuals, and several others, laid the foundations of decision and game theory, which subsequently fueled the drive for control research. In this unique and highly conducive environment, Bellman started working on multi-stage decision processes, as early as 1949, but more fully after 1952---and it is perhaps a lesser known historical fact that one of the earlier topics Bellman worked on at RAND was ! game theory (both zero- and nonzero-sum games) on which he co-authored research reports with Blackwell and LaSalle. In an informative and entertaining autobiography he wrote 32 years later ("Eye of the Hurricane", World Scientific, Singapore), completed in 1984 shortly before his untimely death (March 19), Bellman describes eloquently the research environment at RAND and the reason for coining the term "dynamic programming".

At the time, the funding for RAND came primarily from the Air Force, and hence it was indirectly under the Secretary of Defense, who was in the early 1950s someone by the name Wilson. According to Bellman, "Wilson had a pathological fear and hatred of the word 'research' and also of anything 'mathematical' ". Hence, it was quite a challenge for Bellman to explain what he was doing and interested in doing in the future (which was research on multi-stage decision processes) in terms which would not offend the sponsor. "Programming" was an OK word; after all Linear Programming had passed the test. He wanted "to get across the idea that what he was doing was dynamic, multi-stage, and time-varying", and therefore picked the term "Dynamic Programming". He thought that "it was a term not even a Congressman could object to". This being the official reason given for his pick of the term, some say (Harold Kushner--recipient of this award two years ago--being one of them, based on a personal conversation with Bellman) that he wanted to upstage Dantzig's Linear Programming by substituting "dynamic" for "linear". Whatever the reasons were, the terminology (and of course also the concept and the technique) was something to stay with us for the next fifty plus years, and undoubtedly for many more decades into the future, as also evidenced by the number of papers at this conference using the conceptual framework of dynamic programming.

Applying dynamic programming to different classes of problems, and arriving at "functional equations of dynamic programming", subsequently led Bellman, as a unifying principle, to the "Principle of Optimality", which Isaacs, also at RAND, and at about the same time, had called "tenet of transition" in the broader context of differential games, capturing strategic dynamic decision making in adversarial environments.

Bellman also recognized early on that a solution to a multi-stage decision problem is not merely a set of functions of time or a set of numbers, but a rule telling the decision maker what to do, that is, a "policy". This led in his thinking, when he started looking into control problems, to the concept of "feedback control", and along with it to the notions of sensitivity and robustness. These developments, along with the more refined notions of information structures (who knows what and when), have been key ingredients in my research for the past thirty plus years.

It is interesting that at RAND at the time (that is in the 1950s), in spite of the anti-research and anti-mathematical attitude that existed in the higher echelons of the government, and the Department of Defense in particular, fundamental research did prosper, perhaps somewhat camouflaged initially, which in turn drove the creation of modern control theory, fueled also by the post-Sputnik anxiety. There is perhaps a message that should be taken from that: "Don't give up doing what you think and believe is right and important, but also be flexible and accommodating in how you promote it".

Before closing, I want to thank all who have been involved in the nomination process and the selection process of the Bellman Control Heritage Award this year. I want to use this occasion also to acknowledge several educational and research institutions which have impacted my life and career.

First, I want to acknowledge the contributions of the educational institutions in my native country, Turkey, in the early years of my upbringing, and the comfortable research environment provided by the Marmara Research Institute I was affiliated with in the mid to late 1970s. Second, I want to acknowledge the love for research and the drive for pushing the frontiers of knowledge I was infected with during my years at Yale and Harvard in the early 1970s. And last, but foremost, I want to acknowledge the perfect academic environment I found and have still been enjoying at the University of Illinois at Urbana-Champaign---wonderful colleagues, stimulating teaching environment at the Department of Electrical and Computer Engineering, and exemplary conducive research environment at the Coordinated Science Laboratory with its top quality graduate students. I also want to recognize all students, post-docs, and colleagues I have had the privilege of having research interactions and collaborations with over the years. I thank them all for the memorable journeys in exploring the frontiers in control science and technology.

Thank you very much.

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2005: Gene F. Franklin*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Gene F. Franklin **received the Bachelor’s degree in Electrical Engineering from Georgia Tech in 1950 the Master of Science in Electrical Engineering from MIT in 1952, and the Doctor of Engineering Science degree in Electrical Engineering from Columbia University in 1955. He was appointed Assistant Professor of Electrical Engineering at Columbia University from 1955-1957 and has been on the Faculty of Electrical Engineering at Stanford University since 1957 where he is now Professor of Electrical Engineering, Emeritus. He was Vice Chairman of the Department of Electrical Engineering from 1989-1994 and was Chairman of the Department for the 1994-1995 He was Director of the Information Systems Laboratory from its founding in 1962 until 1971 and was Associate Provost for Computing for Stanford University from 1971-1975.

He is co-author of three books: Sampled Data Systems, Digital Control of Dynamic Systems and Feedback Control of Dynamic Systems. The Second Edition of the last of these books received the IFAC prize as the best book in the controls area published during the period 1987-1990; the fifth edition is now in preparation. Professor Franklin has supervised the research of over 60 Ph.D. candidates in many aspects of control and systems.

Prof. Franklin has for many years been an active member of the IEEE. He joined as a Student Member in April, 1950, and became a Life Fellow of the Institute in January, 1993. He was on the Board of Directors of the CSS from 1982 until 1988 and was Vice President for Technical Affairs for 1985 and 1986. He was General Chairman of the JACC of 1964 and General Chairman of the CDC in 1984. He received the Ragazzini Education Award of the AACC for 1985,.and gave the Bode Lecture at the1994 CDC. He is a Distinguished Member of the CSS and Franklin and Abramovitch were awarded the prize for the best paper published in the CSM in 2003. for their review of the control of disk drives.

**June 9, 2005. Portland, OR**

'Grow old along with me

The best is yet to be'

Browning

I don't feel particularly old but to be in the midst of friends and colleagues with this recognition is as good as it gets.

I'd like to use these few minutes to comment on several of the times when I've come to a fork in the road as an illustration of how difficult it is to predict how a given path will turn out. There may be people who plan their lives carefully and take each step based on the best prediction of a good outcome; I'm not one of them. Too many events in my life were based on random events to pretend that they were based on any good planning of mine.

My first decision was a good one: I selected outstanding parents. My father was a math teacher, my mother an RN and they gave me a love of books and learning that have served me well for over 7 decades. They did, however, make one mistake: they gave me a defective gene that prevents me from seeing colors the way most others see them. If you see me going Ooh and Ah over a rainbow, don't believe it; I'm faking it.

The next decision I wish to mention was in 1945 when I became eligible for the military draft. The good news was that I was admitted to the Navy Radio Technician program but the bad news was that I had to sign up for four years to accept the offer. The evidence was that the war would last several more years so I signed up. That decision did not look so good a few weeks later when President Truman approved use of atomic bombs to reduce Hiroshima to rubble and Nagasaki to ruin in a matter of seconds. The war ended soon after but I was still stuck with four years obligation to the Navy. When I got to Chicago for my final physical, one of the doctors asked me to identify the numbers in a set of circles filled with colored dots. I'm sure that I gave him some values never before found! My performance was such that he marked me as partially disabled, put me on medical special assignment, and sent me off to the electronics school.

I finished the school in the summer of 1946 and was selected to be an instructor at a new campus being set up at the Great Lakes Naval Training Center north of Chicago. I taught electronic amplifiers there using the book Radio Engineering by F E Terman. One of my fellow students there later became well known in the control field (and a Vice President of IBM): Jack Bertram had also signed up for the Navy electronics program. In the early summer of 1947 my defective gene came to my rescue. The Navy announced that any sailor on medical special assignment was eligible for discharge! My response: That's ME.

Out of the Navy I went and set about looking for a school that would accept me at that late date. I was turned down by several fine schools but Georgia Tech told me to come on down so off I went to Atlanta where I got my EE degree in 1950. The months I'd served in the Navy made me eligible for enough GI Bill support to pay the tuition and expenses which I could never have afforded otherwise. This time the bad news was that in the spring of 1950 the Bureau of Labor Statistics reported that the country was to graduate twice as many engineers as the economy could absorb. My only choice was to accept a fellowship to MIT and continue my education using the last of my GI Bill of Rights tuition support. As an aside, while there I took a graduate course on pulse and timing circuits that contained little new from what we had learned in the Navy program as high school graduates! I also had a great time learning how to play rugby from a group of graduate students from South Africa. A most memorable part of this experience was when we were one of the teams selected to play in a tournament as the entertainment for spring break in Bermuda.

After finishing my MS in 1952 I had married the love of my life and needed to get a job. A fellow student introduced me to Professor Jack Millman who was visiting MIT looking for possible appointments to Columbia University. I interviewed with him and was offered a position as Instructor which involved teaching responsibilities but allowed me to study for the doctorate at the same time. I had no idea that I was stepping into a fantastic center of control research assembled by John Ragazzini. With his colleague Lotfi Zadeh he had attracted great students including Eli Jury, Art Bergen, Jack Bertram, Rudy Kalman, Bernie Friedland, George Kranc, and Phil Sarachik. Sampled Data control was never the same again. The first treatment of 'pulsed circuits' was chapter 5 by Hurewicz in the Rad Lab Vol. 25 on The Theory of Servomechanisms edited by James Nichols and Phillips. Hurewicz selected the variable of discrete transforms as z, a prediction of one period and we kept the same convention. At about the time as Ragazzini's group were starting our study, some at MIT selected z to be a delay operator. In the end, z as predictor prevailed but to this day MATLAB treats discrete transforms differently in the Signal Processing toolbox as they do in the Control toolbox. You can look it up.

After I got my degree in 1955 I was promoted to Assistant Professor. I loved Columbia and was pleased to be selected by Professor Ragazzini to join him as co-author of a book on sampled data but New York City left a lot to be desired as a place to raise the two children who had joined my family by this time and soon another fork in the road appeared. It was presented in the person of Professor John Linvill whose class I had taken at MIT and who had moved from MIT to Stanford by way of Bell Labs. John knew Lotfi Zadeh and at his invitation came to Columbia looking for possible new appointments to Stanford's faculty. Again I interviewed and was offered a position on the Stanford Faculty. Thus it was that in late May of 1957 we loaded up the (non air-conditioned) Ford and headed west. I'll never forget the hot day in June when we stopped for gas in Sacramento where the temperature was well over 100 degrees. The pavement was so soft my shoes sank into the asphalt. Then later that day we crossed the mountains into the Bay Area and the temperature dropped about 1 degree per mile for the last 30 miles. We've been in love with the San Francisco Bay area ever since.

As an aside comment on control at the time, in the paper on The history of the Society by Danny Abramovitch and myself, George Axelby is quoted as saying that papers presented at the 1959 conference on control by Kalman and Bertram using state notation were 'quite a mystery to most attendees.' I'd say that the idea of state was not long a mystery to those who had worked with analog computers. On those machines, the only dynamic elements are integrators whose outputs comprise the state quite naturally. In my opinion, every control engineer should be required to program an analog computer where one also quickly learns the value of amplitude and time scaling too.

In any case, such was the random walk through time and space that has taken me from the mountains of North Carolina to the coast of California. My tenure at Stanford has been marked by many things but first and foremost in my affection has been the steady stream of excellent students with whom I have been privileged to work. Without a doubt they have made major contributions to control and to them is owed much of the credit for which this award in made. So let me close with the moral of my story aimed mainly to those in academia:

You can never be too careful when selecting your students.

The corollary to this is applicable to everyone:It's hard to soar like an Eagle if you fly with a bunch of turkeys.

Thank you very much.

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2004: Harold J. Kushner*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Harold J. Kushner **received the Ph.D. in Electrical Engineering from the University of Wisconsin in 1958. Since then, in ten books and more than two hundred papers, he has established a substantial part of modern stochastic systems theory. These include seminal developments of stochastic stability for both Markovian and non-Markovian systems, optimal nonlinear filtering and effective algorithms for approximating optimal nonlinear filters, stochastic variational methods and the stochastic maximum principle, numerical methods for jump-diffusion type control and game problems (the current methods of choice), efficient numerical methods for Markov chain models, methods for singularly perturbed stochastic systems, an extensive development of controlled stochastic networks such as queueing/communications systems under conditions of heavy traffic, methods for the analysis and approximation of systems driven by wideband noise, large-deviation methods for control problems with small noise effects, stochastic distributed and delay systems, and nearly optimal control and filtering for non-Markovian systems. His work on stochastic approximations and recursive algorithms has set much of the current framework, and he has contributed heavily to applications of control methods to communications problems. He is a past Chairman of the Applied Mathematics Department and past Director of the Lefschetz Center for Dynamical Systems, at Brown University, where he is currently a University Professor Emeritus.

**July 1, 2004. Boston, MA**

It is a great honor to receive this award. It is a particular honor that it is in memory of Richard Bellman. I doubt that there are many here who knew Bellman, so I would like to make some comments concerning his role in the field.

Bellman left RAND after the summer of 1965 for the position of Professor of Electrical Engineering, Mathematics, and Medicine at the University of Southern California. This triple title gives you some inkling of how he was viewed at the time. I spent that summer at RAND. My office was right next to Bellman's and we had lots of opportunity to talk.

Bellman was always very supportive of my work. He encouraged me to write my first book, Stochastic Stability and Control, in 1967 for his Academic Press Series. Although naive by modern standards, the book seemed to have a significant impact on subsequent development in that it made many mathematicians realize that there was serious probability to be done in stochastic control, and established the foundations of stochastic stability theory. Numerical methods were among his strong interests. He was well acquainted with my work on numerical methods for continuous time stochastic systems and encouraged me to write my first book on the subject, later updated in two books with Paul Dupuis, and still the methods of choice. Despite his enormous output of published papers, something like 900, he was a strong believer in books since they allowed one to develop a subject with considerable freedom.

There are other connections, albeit indirect, between us. He was a New Yorker, and did his early undergraduate work at CCNY. During those years and, indeed, until the late 50's, CCNY was one of the most intellectual institutions of higher learning in the US. During that time, before the middle class migration out of the city, and the simultaneous opening of opportunities in the elite institutions for the "typical New Yorker," CCNY had the choice of the best of New Yorkers with a serious intellectual bent. Later, he switched to Brooklyn College, which was much closer to his home.

He intended to be a pure mathematician: His primary interest was analytic number theory. When did he become interested in applications? He graduated college at the start of WW2 and the demands of the war exposed him to a great variety of problems. He taught electronics in Princeton and then worked at a sonar lab in San Diego (which kept him out of the Army for a while). He spent the last two years of the war in the army, but assigned to the Manhattan project at Los Alamos. He was a social creature and it was easy for him to meet many of the talented people working on the project. Typically, the physicists considered a mathematician as simply a human calculator, ideally constructed to do numerical computations but not much more. Bellman was asked to numerically solve some PDE's. His mathematical pride refused. To the great surprise of the physicists, he actually managed to integrate some of the equations, obtaining closed form solutions. Holding true to tradition, they checked his solutions, not by verifying the derivation, but by trying some very special cases. Thus his reputation there as a very bright young mathematician was established. This jealously guarded independence and self confidence (and lack of modesty) continued to serve him well. During these years, he absorbed a great variety of scientific experiences. So much was being done due to the needs of the war.

There is one more indirect connection between us. Bellman was a student of Solomon Lefschetz at Princeton, head of the Math. Dept. at the time, a very tough minded mathematician and one of the powerhouses of American mathematics, and impressed with Bellman's ability. While at Los Alamos in WW2 Bellman worked out various results on stability of ODE's. Although he initially intended to do a thesis with someone else on a number theoretic problem, Lefschetz convinced him that those stability results were the quickest way to a thesis, which was in fact true. It took only several months and was the basis of his book on stability of ODE's. I was the director of the Lefschetz Center for Dynamical Systems at Brown University for many years, with Lefschetz our patron saint. Some of you might recall the book (not the movie) "A Beautiful Mind" about John Nash, a Nobel Laureate in Game Theory, which describes Lefschetz's key role in mathematics during Nash's time at Princeton.

Bellman spent the summer of 1948 at RAND, where an amazing array of talent was gathered, including David Blackwell, George Dantzig, Ted Harris, Sam Karlin, Lloyd Shapley, and many others, who provided the foundations of much of decision and game theory. The original intention was to do mathematics with some of the RAND talent on problems of prior interest. But Bellman turned out to be fascinated and partially seduced by the excitement in OR, and the developing role of mathematics in the social and biological sciences. His mathematical abilities were widely recognized. He was a tenured Associate Professor at Stanford at 28, after being an Associate Professor at Princeton, where all indications were that he would have had an assured future had he remained there. He began to have doubts about the payoff for himself in number theory and returned to the atmosphere at RAND often, where he eventually settled and became fully involved in multistage decision processes, having been completely seduced, and much to our great benefit.

Here is a non mathematical item that should be of interest. To work at RAND one needed a security clearance, even though much of the work did not involve "security." Due to an anonymous tip, Bellman lost his clearance for a while: His brother-in-law, whom Bellman had not seen since he (his brother-in-law) was about 13, was rumored to be a communist? This was an example of a serious national problem that was fed, exploited, and made into a national paranoia by unscrupulous politicians.

Bellman was a remarkable person, thoroughly a man of his time and renaissance in his interests, with a fantastic memory. Some epochs are represented by individuals that are towering because of their powerful personalities and abilities. People who could not be ignored. Bellman was one of those. He was one of the driving forces behind the great intellectual excitement of the times.

The word programming was used by the military to mean scheduling. Dantzig's linear programming was an abbreviation of "programming with linear models." Bellman has described the origin of the name "dynamic programming" as follows. An Assistant Secretary of the Air Force, who was believed to be strongly anti-mathematics was to visit RAND. So Bellman was concerned that his work on the mathematics of multi-stage decision process would be unappreciated. But "programming" was still OK, and the Air Force was concerned with rescheduling continuously due to uncertainties. Thus "dynamic programming" was chosen a politically wise descriptor. On the other hand, when I asked him the same question, he replied that he was trying to upstage Dantzig's linear programming by adding dynamic. Perhaps both motivations were true.

If one looks closely at scientific discoveries, ancient seeds often appear. Bellman did not quite invent dynamic programming, and many others contributed to its early development. It was used earlier in inventory control. Peter Dorato once showed me a (somwhat obscure) economics paper from the late thirties where something close to the principle of optimality was used. The calculus of variations had related ideas (e.g., the work of Caratheodory, the Hamilton-Jacobi equation). This led to conflicts with the calculus of variations community. But no one grasped its essence, isolated its essential features, and showed and promoted its full potential in control and operations research as well as in applications to the biological and social sciences, as did Bellman.

Bellman published many seminal works. It is sometimes claimed that many of his vast number of papers are repetitive and did not develop the ideas as far as they could have been. Despite this criticism, his works were poured over word for word, with every comment and detail mined for ideas, technique, and openings into new areas. His work was a mother lode. It was clearly the work of someone with a superb background in analysis as well as a facile mind and sharp eye for aplications. There are lots of examples, with broad coverage, accessible, and usually simple assumptions. His writing is articulate. It flows very smoothly through the problem formulation and mathematical analysis, and he is in full command of it.

We still owe a great debt to him.

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2003: Kumpati S. Narendra*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Kumpati S.Narendra **received the Bachelor of Engineering degree, with Honors, in Electrical Engineering from Madras University, India in 1954, and the M.S.and Ph.D.degrees in Applied Physics from Harvard University in 1955 and 1959, respectively. He was a postdoctoral fellow from 1959 to 1961, and Assistant Professor from 1961 to 1965 at Harvard. He joined the Department of Engineering and Applied Science at Yale University as an Associate Professor in 1965, and was made Professor in 1968.

Professor Narendra received an honorary M.A.degree from Yale in 1968, and an honorary D.Sc.degree from his alma mater in Madras, India in 1995. At Yale, he has served as the chairman of the Electrical Engineering Department (1984-87)and the director of the Neuroengineering and Neuroscience Center (1995- 96). Currently, he is the Howard W. Cheel Professor of Electrical Engineering and director of the Center for Systems Science. Professor Narendra has authored more than 175 technical papers, written three books (with co-authors J. H. Taylor, A. M. Annaswamy, and M. A. L. Thathachar), edited four others, advised 41 doctoral students and over 30 postdoctoral fellows, and consulted for more than a dozen corporate research laboratories. He has lectured at more than 40 universities worldwide and, since 1993, has delivered more than 45 plenary, keynote, and invited lectures at international conferences and research laboratories in the U. S. and abroad. He has received numerous awards, including the Education Award of the AACC (1990), the Leadership Award of the Neural Networks Society (1994), the Bode Prize of the IEEE (1995), as well as the best paper awards of three different societies of the IEEE (SMC 1972, CSS 1988, Neural Network Council 1991). He is a Fellow of the American Association for the Advancement of Science (1987), the IEE [UK ](1981), and a Life Fellow of the IEEE. He has served on various national and international and ISA awards. He is currently a fellow of the ISA,and a current or past member of the IEEE, AIChE, ACM, and MAA, and is active nationally and locally in a number of groups within these organizations.

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2002: Petar V. Kokotović*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Petar V. Kokotović **received graduate degrees in 1962 from the University of Belgrade, Yugoslavia, and in 1965 at the Institute of Automation and Remote Control, USSR Academy of Sciences, Moscow. During his studies, he worked for two six month periods in 1956, at Electricite de France, Paris and then in 1957, at AEG, Stuttgart, Germany. From 1959 until 1966, he was with the Pupin Reseach Institute in Belgrade, Yugoslvia. From 1966 until 1990 he was with the Department of Electrical and Computer Engineering and the Coordinated Sciences Laboratory at the University of Illinois, Urbana, where he held the endowed Grainger Chair. In 1991 he joined the Electrical and Computer Engineering Department of the University of California at Santa Barbara, where he is currently the Director of the Center for Control Engineering and Computation.

In the 1960’s, Kokotović developed the sensitivity points method, a precursor to adaptive control, still in use for automatic tuning of industrial controllers. In the 1970’s, he pioneered singular perturbation techniques for multi-time-scale design of control systems and flight trajectories, which found widespread applications. One of them was a coherency aggregation methodology for large scale Markov chains and power systems. In the 1980’s, Kokotović and coworkers identified the main forms of adaptive systems instability and introduced redesigns that made adaptive controllers more robust. Kokotović’s current research is in nonlinear control, both robust and adaptive. He initiated the development of a popular nonlinear recursive design-backstepping, and its use for robust and adaptive nonlinear control. As a long-term industrial consultant, Kokotovic contributed to the design of computer controls for car engines and automotive systems at Ford, and to power system stability analysis at General Electric. Recently, he led a five-year collaborative research (with United Technologies) on nonlinear control of axial compressors for jet engines.

Professor Kokotović supervised some 30 Ph.D. students and 20 postdoctoral researchers. With them he co-authored numerous papers and ten books, four of which appeared in 1995-96. Professor Kokotović is a fellow of the IEEE and a member of the U.S. National Academy of Engineering. He is the recipient of the two highest control engineering awards: 1990 Quazza Medal by the International Federation of Automatic Control, and the 1995 Control Systems Field Award by the IEEE. He also received an Eminent Faculty Award, two Outstanding IEEE Transactions Paper Awards (1983 and 1993), and delivered the 1991 IEEE Control Systems Society Bode Prize Lecture. His most recent recognition is the 2002 IEEE James H. Mulligan Jr. Education Medal.

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2001: A.V. Balakrishnan*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**A.V. Balakrishnan **earned his M.S. Degree in Electrical Engineering and his Ph.D. in Mathematics from the University of Southern California in 1950 and 1954, respectively. Prof. Balakrishnan has been with the University of California, Los Angeles, since 1961; he has been a Professor of Engineering since 1962 and a Professor of Mathematics since 1965. He was Chair of the Department of Systems Science in the (then) School of Engineering from 1969-1975. Since 1985, he has served as the appointed Director of the NASA-UCLA Flight Systems Research Center. Dr. Balakrishnan also lends his expertise to industry and the government, including Optimization Software, Inc., NADC US Navy, and the NASA Dryden Flight Research Center.

Professor Balakrishnan holds patents on the "modes of interconnected lattice trusses using continuum models, and "laser beam log amplitude temporal scintillation spectrum due to crosswind". He has received honors and awards from the International Federation of Information Processing Society (1977), NASA (1978, 1992,1995, and 1996), and, in 1980, the Guillemin Prize in recognition of the major impact that his original contributions have had in setting the research direction of communications and control. Most recently, Prof. Balakrishnan has been selected as the 2001 awardee for the Richard E. Bellman Control Heritage Award, which is the highest recognition of professional achievement for US control systems engineers and scientists. He has published over 200 papers, and has authored or edited over 10 books.

Prof. Balakrishnan is a Lifetime Fellow of IEEE, a member of the International Scientific Radio Union, the Chair of the IFIP Technical Committee 7 and of Working Group 7.1, and the President of the ComCon Conference Board.

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2000: W. Harmon Ray*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**W. Harmon Ray **is Vilas Research Professor and past chairman of the Department of Chemical Engineering at the University of Wisconsin in Madison. He received his B.A. and B.S.Ch.E. from Rice University and his Ph.D. from the University of Minnesota in 1966. Before joining the University of Wisconsin he was a faculty member at the University of Waterloo in Canada, from 1966 to 1970, and at the State University of New York at Buffalo, from 1970 to 1976. Professor Ray has had extensive industrial consulting experience, and has contributed numerous articles to the technical literature in the areas of polymerization processes, chemical reaction engineering, process modelling, optimization, and process dynamics and control. He is co-author of a monograph, Process Optimization, published in 1973, and author of Advanced Process Control which appeared in 1981. This latter book has been published in Russian and Chinese. Professor Ray is also co-editor of two volumes: Distributed Parameter Systems (1978), and Dynamics and Modelling of Reacting Systems (1980). More recently, he is the coauthor of the textbook, Process Dynamics, Modeling, and Control (1994).

In 1969, Professor Ray received the D. P. Eckman Award of the American Automatic Control Council and spent a year, in 1973-74, as a Guggenheim Fellow in Europe. In 1981 he received the Arthur K. Doolittle Award of the Organic Coatings and Plastics Division of the American Chemical Society and also the Automatica Prize Paper Award of the International Federation of Automatic Control. In addition, he was the recipient of the 1982 Professional Progress Award of the American Institute of Chemical Engineeers. In 1989 Prof. Ray received the Control Education Award from the American Automatic Control Council. Professor Ray has been a distinguished lecturer at a number of universities including the Lacey Lectures at Caltech, the Reilly Lectures at Notre Dame, the Kelley Lecture at Purdue, and the Sargent Lecture at Imperial College London.

Prof. Ray is a Fellow of AIChE, and a member of the National Academy of Engineering.

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1999: Yu-Chi Ho*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Yu-Chi (Larry) Ho** received his S.B. and S.M. degrees in Electrical Engineering from M.I.T. and his Ph.D. in Applied Mathematics from Harvard University. Except for three years of full time industrial work he has been on the Harvard Faculty. Since 1969 he has been Gordon McKay Professor of Engineering and Applied Mathematics. Since 1989, he has been the T. Jefferson Coolidge Chair in Applied Mathematics and Gordon McKay Professor of Systems Engineering at Harvard. He was also the visiting professor to the Cockrell Family Regent's Chair in Engineering at the University of Texas, Austin in 1989.

He has published over 140 articles and three books, one of which (co-authored with A.E. Bryson, Jr.) has been translated into both Russian and Chinese and made the list of Citation Classics as one of the most referenced works on the subject of optimal control. He is on the editorial boards of several international journals and is the editor-in-chief of the international Journal on Discrete Event Dynamic Systems. He is the recipient of various fellowships and awards including the Guggenheim (1970) and the IEEE Field Award for Control Engineering and Science (1989), the Chiang Technology Achievement Prize (1993). He is a Life fellow of IEEE, a Distinguished Member of the Control Systems Society, and was elected a member of the U.S. National Academy of Engineering (1987). In addition to service on various governmental and industrial panels, and professional society administrative bodies, he was the President of the IEEE Robotics & Automation Society in 1988 and co-founder of Network Dynamics, Inc., a software firm specializing in industrial automation.

His research interests lie at the intersection of Control System Theory, Operations Research, and Artificial Intelligence. He has contributed to topics range from optimal control, differential games, information structure, multi-person decision analysis, to incentive control, and since 1983, exclusively to discrete event dynamic systems, perturbation analysis, ordinal optimization, and computational intelligence.

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1998: Lotfi A. Zadeh*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Lotfi A. Zadeh** joined the Department of Electrical Engineering at the University of California, Berkeley, in 1959, and served as its chairman from 1963 to 1968. Earlier, he was a member of the electrical engineering faculty at Columbia University. In 1956, he was a visiting member of the Institute for Advanced Study in Princeton, New Jersey. In addition, he held a number of other visiting appointments, among them a visiting professorship in Electrical Engineering at MIT in 1962 and 1968; a visiting scientist appointment at IBM Research Laboratory, San Jose, CA, in 1968, 1973, and 1977; and visiting scholar appointments at the AI Center, SRI International, in 1981, and at the Center for the Study of Language and Information, Stanford University, in 1987-1988. Currently he is a Professor in the Graduate School, and is serving as the Director of BISC (Berkeley Initiative in Soft Computing).

Until 1965, Dr. Zadeh's work had been centered on system theory and decision analysis. Since then, his research interests have shifted to the theory of fuzzy sets and its applications to artificial intelligence, linguistics, logic, decision analysis, control theory, expert systems and neural networks. Currently, his research is focused on fuzzy logic, soft computing and computing with words. An alumnus of the University of Teheran, MIT, and Columbia University, Dr. Zadeh is a fellow of the IEEE, AAAS, ACM and AAAI, and a member of the National Academy of Engineering. He was the recipient of the IEEE Education Medal in 1973 and a recipient of the IEEE Centennial Medal in 1984. In 1989, Dr. Zadeh was awarded the Honda Prize by the Honda Foundation, and in 1991 received the Berkeley Citation, University of California. In 1992, Dr. Zadeh was awarded the IEEE Richard W. Hamming Medal "for seminal contributions to information science and systems, including the conceptualization of fuzzy sets." He became a Foreign Member of the Russian Academy of Natural Sciences (Computer Sciences and Cybernetics Section) in 1992 and received the Certificate of Commendation for AI Special Contributions Award from the International Foundation for Artificial Intelligence. Also in 1992, he was awarded the Kampe de Feriet Medal and became an Honorary Member of the Austrian Society of Cybernetic Studies.

In 1993, Dr. Zadeh received the Rufus Oldenburger Medal from the American Society of Mechanical Engineers "for seminal contributions in system theory, decision analysis, and theory of fuzzy sets and its applications to AI, linguistics, logic, expert systems and neural networks." He was also awarded the Grigore Moisil Prize for Fundamental Researches, and the Premier Best Paper Award by the Second International Conference on Fuzzy Theory and Technology. In 1995, Dr. Zadeh was awarded the IEEE Medal of Honor "for pioneering development of fuzzy logic and its many diverse applications." In 1996, Dr. Zadeh was awarded the Okawa Prize "for outstanding contribution to information science through the development of fuzzy logic and its applications." In 1997, Dr. Zadeh was awarded the B. Bolzano Medal by the Academy of Sciences of the Czech Republic "for outstanding achievements in fuzzy mathematics." He also received the J.P. Wohl Career Achievement Award of the IEEE Systems, Science and Cybernetics Society. He served as a Lee Kuan Yew Distinguished Visitor, lecturing at the National University of Singapore and the Nanyang Technological University in Singapore, and as the Gulbenkian Foundation Visiting Professor at the New University of Lisbon in Portugal.

Dr. Zadeh holds honorary doctorates from Paul-Sabatier University, Toulouse, France; State University of New York, Binghamton, NY; University of Dortmund, Dortmund, Germany; University of Oviedo, Oviedo, Spain; University of Granada, Granada, Spain; Lakehead University, Canada; University of Louisville, KY; Baku State University, Azerbaijan; and the Silesian Technical University, Gliwice, Poland. Dr. Zadeh has authored close to two hundred papers and serves on the editorial boards of over fifty journals. He is a member of the Technology Advisory Board, U.S. Postal Service; Advisory Committee, Department of Electrical and Computer Engineering, UC Santa Barbara; Advisory Board, Fuzzy Initiative, North Rhine-Westfalia, Germany; Fuzzy Logic Research Center, Texas A&M University, College Station, Texas; Advisory Committee, Center for Education and Research in Fuzzy Systems and Artificial Intelligence, Iasi, Romania; Senior Advisory Board, International Institute for General Systems Studies; the Board of Governors, International Neural Networks Society; and is the Honorary President of the Biomedical Fuzzy Systems Association of Japan and the Spanish Association for Fuzzy Logic and Technologies.

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1997: Rudolf E. Kalman*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Rudolf E. Kalman **was born in Budapest, Hungary, on May 19, 1930. He received the bachelor's degree (S.B.) and the masterís degree (S.M.) in electrical engineering, from the Massachusetts Institute of Technology in 1953 and 1954, respectively. He received the doctorate degree (D.Sci.) from Columbia University in 1957. His major positions include that of Research Mathematician at the Research Institute for Advanced Study in Baltimore, 1958-1964; Professor at Stanford University 1964-1971; Graduate Research Professor at the Center for Mathematical System Theory, University of Florida, Gainesville 1971-1993. Moreover, since 1973 he has also held the chair for Mathematical System Theory at the ETH (Swiss Federal Institute of Technology) Zurich.

He is the recipient of numerous awards, including the IEEE Medal of Honor (1974), the IEEE Centennial Medal (1984), the Kyoto Prize in High Technology from the Inamori foundation, Japan (1985), the Steele Prize of the American Mathematical Society (1987). He is a member of the U.S. National Academy of Science, the U.S. National Academy of Engineering, a foreign member of the Hungarian and French Academies of Science, and has received a number of honorary doctorates. Kalman's first major contribution was the introduction of the self-tuning regulator in adaptive control. Between 1959 and 1964 Kalman wrote a series of seminal papers. First, the new approach to the filtering problem, known today as Kalman Filtering was put forward. In the meantime, the all pervasive concept of controllability and its dual, the concept of observability, were formulated. By combining the filtering and the control ideas, the first systematic theory for control synthesis, known today as the Linear-Quadratic-Gaussian or LQG theory, resulted. The next contribution was the solution of the black box modelling problem in the linear case, known as realization theory. This problem involves the construction of the state from input/output measurements. The next milestone in the sequence of contributions was the introduction of module theory to the study of linear systems.

Over the past 15 years Kalman has devoted his efforts to the understanding of the problem of identification from noisy data with particular attention to the connections with econometrics, statistics and probability theory.

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1996: Elmer G. Gilbert*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Elmer G. Gilbert **received his B.S.E. and M.S.E. degrees in Electrical Engineering in 1952 and 1953, respectively, and his Ph.D. in Instrumentation Engineering in 1957, all from the University of Michigan. He has been with the University of Michigan's Department of Aerospace Engineering (then called Aeronautical Engineering) since 1954, becoming Professor in 1963 and Professor Emeritus in 1994. Visiting positions include the United States Air Force Academy (1965), the Johns Hopkins University (1974-1976, 1991-1992), the University of Minnesota (1985-1986), and the National University of Singapore (multiple times 1997-2005).

Dr. Gilbert has had a highly varied career in engineering development, basic research, and teaching. This has led to over 100 publications and 9 patents. In the systems and control area at the University of Michigan, he was active in curriculum development and as an advocate for cross-department cooperation. He was Chair or Co-Chair of doctoral committees for 23 students.

During his graduate studies, he was involved in the department’s analog computer and aircraft simulation research programs. This activity continued through the 1960’s, both in the department and as a consultant to Applied Dynamics Incorporated, a computer firm founded in 1957 by him and two other department professors, Robert M. Howe and Edward O. Gilbert. Up to 1970, he was a key member of the Applied Dynamics group responsible for conception and development of new products, primarily state-of-the-art analog and hybrid computers. The firm still exists, specializing in hardware and software tools for hardware-in-the-loop simulation, system prototyping, and embedded controller software.

The 1960’s were a period of rapid development for the theory and application of control systems. This was the area of work in which Dr. Gilbert’s university activities were centered. A principal interest was the design of multivariable control systems. Based on his experience in system simulation, he observed that casual use of matrices of transfer functions did not allow adequate descriptions of the underlying dynamics they represent. This led to his widely recognized work (1962-1963) on the role of observability and controllably on state-space system representations, including the Gilbert realization, now a standard topic in system textbooks. A long-standing problem in multivariable linear-systems theory, not involving transfer functions, was input-output decoupling by state feedback. Dr. Gilbert gave its first complete solution in 1969. The result led to a large body of subsequent research in the field. Computational issues motivated much of his other research in the 1960’s. This included convexity-based, abstract optimization algorithms that led to the efficient solution of practical optimal control problems (for example, minimum-fuel impulsive control).

Dr. Gilbert’s research contributions, after the 1960’s, are characterized by overlapping themes that already had appeared in his prior work: dynamic system representation and realization, optimal control, systems with hard (point-wise in time) constraints, and effective computational procedures. Specific topics treated include: periodic optimal control and its application to improved aircraft flight efficiency, feedback decoupling for nonlinear systems, power-law functional expansions for the input-output response of nonlinear systems, stability of nonlinear control systems with feedback provided by model predictive control, efficient procedures for computing the distance between objects (polytopes) in 3 space, path planning for robots in the presence obstacles, domains of attraction for linear systems with hard constraints and set bounded disturbances, and reference and command governors for linear systems with disturbances and hard constraints. Some of the papers on these topics published by Dr. Gilbert and his colleagues have become standard references in the control systems literature. Perhaps the most widely recognized paper is the one in 1988 with S. S. Keerthi on model predictive control. It was the first contribution to address in specific, rigorous ways stability issues crucial in many current control applications.

Recognitions for Dr. Gilbert’s contributions include: Fellow of the Institute for Electrical and Electronics Engineering for “Contributions to multivariable and optimal control systems” (1979), election to the Johns Hopkins University Society of Scholars (1990), a Distinguished Faculty Achievement Award from the University of Michigan (1991), Fellow of American Association for the Advancement of Science for “Contributions to theory and practice of multivariable, optimal, nonlinear, and computer control systems and to control engineering education" (1995). In 1994, he was elected to the National Academy of Engineering: "For contributions to the theory and practice of multivariable, optimal, non-linear, and computer control systems, and to control engineering education." In 1994, he received the IEEE Technical Field Award in Control Systems "For pioneering and innovative contributions to linear state space theory and its applications, especially realization and decoupling, as well as to control algorithms." In 1996, he received the Richard E. Bellman Control Heritage Award from the American Automatic Control Council "In recognition of a distinguished career in automatic control, with pioneering research contributions to a broad range of subjects including linear multivariable systems theory, computation of optimal controls, nonlinear systems theory, and motion planning in the presence of obstacles."

**July 4, 1996**

I am immensely pleased by the Award! It is indeed a special honor, coming from the American Automatic Control Council, which has done so much to advance and to unify the field of control. I recall with delight the long sequence of Joint Automatic Control Conferences and the subsequent American Control Conferences. The Council's many current activities, including its participation in this 13th IFAC World Congress, continue its invaluable service to the control community.

In receiving the award I wish to recognize the support of friends, colleagues and former students. They have played a vital role in my work. I must also acknowledge the special influence of others I have known mostly or entirely through their publications. It is no surprise that Richard Bellman was one of them. Let me make a few remarks about his legacy and how it affects us today.

In examining his writings I am struck by his genuine interest in applications and obvious desire to make his findings useful to a wide audience. In this, I believe, there are lessons to be learned. I'll note four.

1. Fundamental ideas have greater power when they are elegantly expressed. There is no better example than Bellman's formulation of dynamic programming. Its wonderfully stated ideas permeate and illuminate much of what we do, ranging from deep theoretical results in optimal control to practical, on-line implementation of controllers.

2. Propagation of knowledge is enhanced by the establishment of connections across fields and disciplines. Bellman's 1960 book, "Introduction to Matrix Analysis," illustrates this point beautifully. The discussions and bibliographies and the end of each chapter are marvelous sources of insight and diversity.

3. In mathematical exposition, clarity and accessibility are precious attributes. Bellman had a special talent for keeping mathematical developments closely connected to first principles and organizing them in simple, easy to understand parcels. He had the courage to compromise generality for clarity and, on occasion, rigor for insight.

4. Numerical issues are crucial to control applications. Bellman realized this early, four decades ago, when he addressed controller implementation, algorithm design, error analysis, and computational complexity.

Over the years the field of control has become mature, complex and diverse. We now need, as Richard Bellman did so well, to give greater attention to the means by which we encourage its progress and impact on society. On that point I will end. Thank you.

###
1995: Michael Athans*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Michael Athans **was born in Drama, Macedonia, Greece on May 3, 1937. He came to the United States in 1954 for a one year exchange visit under the auspices of the American Field Service and he attended Tamalpais High School in Mill Valley, California. Next he attended the University of California at Berkeley from 1955 to 1961 where he received his BSEE in 1958 (with highest honors), MSEE in 1959, and Ph.D. in control in 1961.

From 1961 to 1964 he was employed as a member of the technical staff at the MIT Lincoln Laboratory, Lexington, Mass. where he conducted research in optimal control and estimation theory. Since 1964 he has been a faculty member in the MIT Electrical Engineering and Computer Science department, where he currently holds the rank of Professor. He also was the director of the MIT Laboratory for Information and Decision Systems (formerly the Electronic Systems Laboratory) from 1974 to 1981. In 1978 he co-founded ALPHATECH Inc., Burlington Mass., where he serves as Chairman of the Board of Directors and Chief Scientific Consultant. He has also consulted for numerous other industrial organizations and government panels. He has acted as the thesis supervisor for 42 MIT doctoral students to date. In 1995 he was Visiting Professor in the Department of Electrical and Computer Engineering at the National Technical University of Athens, Greece.

###
1994: Jose B. Cruz, Jr.*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Jose B. Cruz, Jr.** received the B.S. in electrical engineering from the University of the Philippines (UP), April 1953, S.M. in electrical engineering from the Massachusetts Institute of Technology (MIT), June 1956, and the Ph.D. in electrical engineering from the University of Illinois, Urbana–Champaign, October 1959.,He is a Distinguished Professor of Engineering and a Professor of Electrical and Computer Engineering at The Ohio State University (OSU). Previously, he served as Dean of the College of Engineering at OSU from 1992 to 1997, and as a Professor of Electrical and Computer Engineering at the University of California in Irvine (UCI) from 1986 to 1992 and at the University of Illinois from 1965 to 1986. He was a visiting professor at MIT and Harvard University in 1973 and visiting associate professor at the University of California, Berkeley in 1964–1965. He served as instructor at UP 1953–1954 and research assistant at MIT, 1954–1956.,Dr. Cruz, Jr., is the author or coauthor of six books, 23 chapters in research books, and more than 250 articles in research journals and refereed conference proceedings.

He was elected a member of the National Academy of Engineering (NAE) in 1980, Chair of the NAE Electronic Engineering Peer Committee 2003, NAE Membership Committee 2003–2007, and he was elected a corresponding member of the National Academy of Science and Technology (NAST, Philippines) in 2003. He is a Fellow of the American Association for the Advancement of Science (AAAS), elected 1989; a Fellow of the American Society for Engineering Education (ASEE), elected in 2004; a Fellow of IFAC, elected in 2007; recipient, Curtis W. McGraw Research Award of ASEE, 1972; recipient, Halliburton Engineering Education Leadership Award, 1981; Distinguished Member, IEEE Control Systems Society, designated in 1983; recipient, IEEE Centennial Medal, 1984; recipient, IEEE Richard M. Emberson Award, 1989; recipient, ASEE Centennial Medal, 1993; and recipient, Richard E. Bellman Control Heritage Award, American Automatic Control Council (AACC), 1994.

In addition to membership in ASEE, AAAS, NAE, NAST, he is a member of the Institute for Operations Research and Management Science (INFORMS), the Philippine American Association for Science and Engineering (PAASE, Founding member 1980, Founding President-Elect 1981, Chairman of the Board 1998–2000), Philippine Engineers and Scientists Organization (PESO), National Society of Professional Engineers (NSPE), Sigma Xi, Phi Kappa Phi, and Eta Kappa Nu.,He has served on various professional society boards and editorial boards, and he served as an officer of professional societies, including IEEE wherein he was President of the IEEE Control Systems Society in 1979, Editor of the IEEE Transactions on Automatic Control, a member of the IEEE Board of Directors from 1980 to 1985, IEEE Vice President for Technical Activities in 1982 and 1983, and IEEE Vice President for Publication Activities in 1984 and 1985. He served as Chair of the Engineering Section of AAAS in 2004–2005. He served as a member of the Board of Examiners for Professional Engineers for the State of Illinois, 1984–1986. (data from April 15, 2011).

###
1993: Eliahu I. Jury*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Eliahu Ibraham Jury** (born May 23, 1923) is an American engineer, born in Baghdad, Iraq. He received his Doctor of Engineering Science degree from Columbia University of New York City in 1953. He was professor of Electrical Engineering at the University of California, Berkeley, and the University of Miami. He developed the advanced Z-transform, used in digital control systems and signal processing.^{ }He is a Life Fellow of the IEEE and has received the Rufus Oldenburger Medal from the ASME, the First Education Award of IEEE Circuits and Systems Society, and the IEEE Millennium Medal. In 1993 he received the AACC's Richard E. Bellman Control Heritage Award.

###
1992: Rutherford Aris*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Rutherford "Gus" Aris** (September 15, 1929 – November 2, 2005) was a chemical engineer, control theorist, applied mathematician, and a Regents Professor Emeritus of Chemical Engineering at the University of Minnesota (1958–2005).

Over the course of his long academic career, Aris was a visiting professor at many institutions, including Cambridge University, the California Institute of Technology, and Princeton University; he authored 13 books and more than 300 chemical engineering research articles, and mentored 48 Ph.D. and 20 M.S. graduate students. Aris was well known for his research on mathematical modeling, chemical reactor and chemical process design, and distillation techniques, as well as his paleographic research.

After he had been department head for four years, in 1978 he was named Regents Professor. Some of the awards and honors earned by Aris include a Guggenheim Fellowship, election to the National Academy of Engineering in 1975 and the American Academy of Arts and Sciences in 1988. Aris was also a member of the American Chemical Society, the Society for Mathematical Biology, and the Society of Scribes and Illuminators, among others. Aris was awarded the Richard E. Bellman Control Heritage Award in 1992 for his contributions to the field of control theory. He was awarded the Neal R. Amundson Award for Excellence in Chemical Reaction Engineering by the International Symposia on Chemical Reaction Engineering in 1998.

In 2016, the board of the ISCRE (International Symposia on Chemical Reaction Engineering) established the Rutherford Aris Young Investigator Award for Excellence in Chemical Reaction Engineering. This award honors young researchers under the age of 40 to recognize outstanding contributions in experimental and/or theoretical reaction engineering research.

# Inventing Tomorrow, Winter 2006 (vol 30 no 1)

Published on Dec 1, 2006; **College of Science and Engineering at the University of Minnesota**

**Rutherford "Gus" Aris, **Regents Professor Emeritus of Chemical Engineering, died Nov. 2, 2005, in Edina, Minn. He was 76. He held a joint appointment in the Department of Classical and Near Eastern Studies, where he conducted research and taught classes in paleontology. A brilliant scholar, Aris had an enormous impact on the field of chemical engineering through his research, publications, teaching, and advising. Among his most important contributions are detailed explanations for sudden temperature runaways and oscillating behavior of processes involving chemical reactions, work that led to improved design of potentially explosive chemical processes and safer industrial operations.

He led the way in developing new mathematical techniques for optimizing and controlling chemical manufacturing processes and in teaching these new methods to students and professional engineers. He published 13 books and more than 300 research articles, and mentored more than 65 master’s and Ph.D. students. Born in Bournemouth, U.K., on Sept. 15, 1929, Aris completed the requirements for an honors degree in mathematics from the University of London at age 16, but the university did not think it was proper to award a degree to someone so young and delayed giving Aris the degree until he was 19. He later received external Ph.D. and D.Sc. degrees from the University of London.

Aris was hired in 1958 as an assistant professor by Neal Amundson, then head of the University of Minnesota’s chemical engineering and materials science department, who had a keen eye for talent. In 1974 Aris succeeded Amundson as department head and served in that capacity until 1978. Aris was elected to the National Academy of Engineering (1975) and to the American Academy of Arts and Sciences (1988). He received many honorary degrees and distinguished lectureships and more than a dozen prestigious awards from engineering and scientific societies.

###
1991: John G. Truxal*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**John G. Truxal** (February 19, 1924 - February 16, 2007) was an American control theorist and a Distinguished Teaching Professor, Emeritus at the State University of New York at Stony Brook. Truxal was a member of the National Academy of Engineering and is noted for his numerous contributions to control theory, for which he received the Richard E. Bellman Control Heritage Award (1991). He moved to the Polytechnic Institute of Brooklyn and became professor and chairman of the electrical engineering department there in 1957. Four years later, he was named vice president of the school, and held that position for 11 years.

John G. Truxal (IRE Student, 1947; Associate, 1948; Senior Member, 1954; and Fellow, 1959) received the 1974 IEEE James H. Mulligan, Jr. Award "For pioneering the introduction of engineering concepts into the high-schools and for his outstanding textbooks and leadership in engineering education."

Truxal was born on 19 February 1924 in Lancaster, Pennsylvania. He received the B.S. degree from Dartmouth College, Hanover, New Hampshire in 1944, and the D.Sc. degree from Massachusetts Institute of Technology in 1950. Truxal entered college as an English major, but his experience as a Radar Officer in the U.S. Navy during World War II shifted his interests to engineering.

In 1950, Truxal joined the faculty of Purdue University. He remained here until 1954, when he joined the faculty of the Polytechnic Institute of Brooklyn. New York. Truxal played several roles throughout his career at the Polytechnic. He subsequently served as professor, chair of the electrical engineering department, Vice President for educational development (Academic Affairs), Dean of Engineering, and Provost. During his time at Brooklyn Poly, he developed an innovative honors program. Under his guidance, the faculty of electrical engineering published a series of textbooks which paved the way in curriculum development at the undergraduate and graduate levels. He also pioneered one of the the first system-engineering programs in the U.S.

IN 1972, Truxal was named Dean of Engineering and Applied Sciences at the State University of New York at Stony Brook. Four years later, in 1976, he returned to the classroom and the following year he was named Distinguished Teaching Professor. For nine years, he directed the National Coordinating Center for Curriculum Development. Truxal retired in 1991 but remains active within the Stony Brook community.

In addition to the Mulligan Medal, Truxal received numerous other awards including the ISA Education Award and the Westinghouse Award, among others. He is a Fellow of the IEEE, ISA, and AAAS. He has also served on committees for NASA and the National Science Foundation. Truxal received an honorary doctorate from Purdue in 1965.

Truxal was Chair of the American Automatic Control Council Theory Committee and Past Chair of the IRE Professional Group on Education. He was an IRE Fellow and a member of the IRE Editorial Board as well as the Administrative Committee of PGAC and PGE.

Truxal's hobbies include teaching, writing, reading, playing bridge, traveling, and ice skating.

###
1990: Arthur E. Bryson, Jr.*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Arthur Earl Bryson, Jr.** (born October 7, 1925) is the Pigott Professor of Engineering Emeritus at Stanford University and the "father of modern optimal control theory". With Henry J. Kelley, he also pioneered an early version of the backpropagation procedure, now widely used for machine learning and artificial neural networks.

He was a member of the U.S. Navy V-12 program at Iowa State College, and received his B.S. in Aeronautical Engineering there in 1946. He earned his Ph.D. from the California Institute of Technology, graduating in 1951. His thesis *An Interferometric Wind Tunnel Study of Transonic Flow past Wedge and Circular Arcs* was advised by Hans W. Liepmann.

Bryson was the Ph.D. advisor to the Harvard control theorist Yu-Chi Ho.

###
1989: Roger W. Brockett*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Roger W. Brockett,** a pioneer in control systems theory, began his career at MIT in 1963 before joining the faculty at Harvard in 1969. In 1983, Brockett founded the Harvard Robotics Laboratory, which continues its research in areas such as robotic manipulation and control of quantum systems.

His contributions to control theory and applied mathematics include early work on frequency domain stability theory, differential geometric methods in nonlinear control, the computation of Volterra series, a geometric approach to the sufficient statistics problem in nonlinear estimation, stabilization questions, robot kinematics and dynamics, formal languages for motion control, hybrid systems, computational problems related to tensor ranking and integrable systems, quantum control, and optimal control of Markov processes.

As a Harvard faculty member, he initiated long-standing introductory level courses in engineering design and developed major funding for group efforts in robotics and computer vision. He retired from the regular faculty in 2012 after 49 years of lecturing. During his tenure, he served as the major advisor of more than 60 Ph.D. students at Harvard, MIT, and Brandeis University.

Brockett’s research and teaching have been recognized by the Institute of Electrical and Electronic Engineers, American Society of Mechanical Engineers, Society for Industrial and Applied Mathematics (SIAM), and the American Automatic Control Council. His 1970 textbook on linear systems has recently been reprinted in the SIAM Classic Series.

###
1988: Walter R. Evans*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Walter Richard Evans** (January 15, 1920 – July 10, 1999) was a noted American control theorist and the inventor of the root locus method in 1948. He was the recipient of the 1987 American Society of Mechanical Engineers Rufus Oldenburger Medal and the 1988 AACC's Richard E. Bellman Control Heritage Award.

Walter Evans' principal contribution to the field of automatic control was his invention of the Evans Root Locus Method in 1948 and his subsequent invention of the Spirule, a tool used in conjunction with the root-locus method. Because it codifies very useful frequency information about a feedback system in such intuitive and appealing graphical form, Evan's root-locus method has enjoyed widespread use in the design of control systems and is now a standard chapter in texts on feedback control systems.

Evans received his B.S. in Electrical Engineering from Washington University in St. Louis, Missouri in 1941 and the M.S. degree in Electrical Engineering from the University of California at Los Angeles in 1951. During his lifetime, he worked as an engineer at several companies, including General Electric, Autonetics (then a division of North American Aviation, now known as Rockwell International), and Ford Aeronautic Company; and he also served as an instructor at Washington University for a few years.

###
1987: John "Jack" C. Lozier*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**John "Jack" Lozier **(second AACC President and an IFAC President from 1972 to 1975).

John Lozier, an engineering manager at Bell Labs, was Past President of the AACC, an IFAC Executive Council member and would continue on to be the key US participant in the senior leadership of IFAC from the US until his term as IFAC President from 1972 to 1975 when the IFAC held its 6th Congress, this time at MIT.

Bio by Steve Kahne in the IFAC Newsletter, page 3 of https://www.ifac-control.org/publications/1989-1997/1994_6/view

###
1986: John Zaborszky*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**John Zaborszky** (May 13, 1914 – February 11, 2008) was a noted Hungarian applied mathematician and a professor in the Department of Systems Science and Mathematics, Washington University. He received the Richard E. Bellman Control Heritage Award in 1986.

Zaborszky earned a master's degree and PhD in 1937 and 1943, respectively, "under auspices of the Regent of Hungary" from the Technical University of Budapest. He continued as a docent at that institution and was chief engineer of the city's municipal power system before emigrating to America in 1947. He joined UMR as an assistant professor upon his arrival and in 1954 moved to St. Louis to join Washington University. In 1974, he founded and was first chairman of the Systems Science Department. He was elected to the National Academy of Engineering in 1984.

--------- From IEEE Xplore ------

Written by Hiro Mukai and Tzyh Jong Tarn

On February 1, 2008, John Zaborszky, senior professor of electrical and systems engineering

at Washington University in St. Louis, passed away suddenly at the age of 93.

John Zaborszky was born on May 13, 1914, in Budapest, Hungary, when it was a part of the

Austro-Hungarian Empire. John’s ancestors received a grant in 1263 from the king of

Hungary, which included a village, named Zábor, and a coat of arms. The family name

derives from Zábor, then located in northern Hungary, now in Slovakia, one of the successor

states of the Austro-Hungarian Empire. John’s father Nándor Záborszky studied law, and,

following family tradition, entered public service upon completion of his studies. In 1926 he

was elected mayor of the town of Budafok. He died there in 1952 after serving two terms as

mayor. His memory was honored by Budafok a few years ago with a plaque dedicated on the

main square of the town. John’s ashes will be placed in the family mausoleum in Budafok.

Six weeks after John’s birth, the heir to the Austro-Hungarian throne was assassinated in

Sarajevo, and the First World War broke out. At the end of the war the Austro-Hungarian

Empire collapsed along with the German, Russian, and Ottoman empires. A peace treaty was

enforced on Hungary at the time John was 6 years old.

John received an excellent education in Hungary, which had an exceptional school system, as

evidenced by the number of leading scientists produced by it, such as Paul Erdos, Edward

Teller, Leo Szilard, John von Neumann, Gabor Szego, and John Kemeny. The performing

arts, fine arts, literature, and music were flourishing in Budapest. The names of Bartók and

Kodály associated with that period are well known around the world. John received the

Diploma in Engineering in 1937 and the D.Sc. degree, with special honors, in 1943, both from

the Royal Hungarian Technological University in Budapest.

John was chief engineer with the Budapest Municipal Power System as well as a docent at the

Technological University before he emigrated from Hungary to the United States in 1947.

Upon arrival in the US, he was appointed an assistant professor at the University of Missouri

at Rolla, Missouri. In 1954, he joined the School of Engineering at Washington University in

St. Louis as a professor.

In 1974 at the age of 60, John Zaborszky founded the Department of Systems Science and

Mathematics (SSM) at Washington University and became chair of the department, a position

he held until 1989. Under John’s leadership, the department developed an international

reputation in systems and control. In 1990, the department created in his honor the Annual

Zaborszky Distinguished Lecture Series, under the aegis of which a distinguished scholar

presented a series of three lectures in his field of expertise at Washington University. In 2003,

the department merged with the Department of Electrical Engineering and formed the

Department of Electrical and Systems Engineering. John was active as a senior professor until

his death.

John’s research focused on power systems and their dynamics, and he published two books

and over 200 technical papers. He conducted many projects about power electric systems

under the sponsorship of NSF and DOE. He was a member of a panel in 1965 at the National

Academy of Science that gave advice and recommendations after the Northeast Power

Blackout. John supervised numerous PhD students. Prof. Marija Ilic of Carnegie Mellon

University wrote, “Many of us never would have become what we are today without his

vision and the special SSM at Washington University. Much of my work at Carnegie Mellon

University today is carrying on the vision started by Dr. Z and attempting to teach the next

generation.” Prof. Mani Venkatasubramanian of Washington State University writes, “I was

blessed and very fortunate to have Dr. Zaborszky as one of my PhD advisors at Washington

University. Dr. Z was a kind and gentle person with great vision for power system stability

and control. I have fond memories of so many intense and stimulating discussions with Dr. Z.

He was such a dedicated researcher with amazing energy for his age.” John was also actively

involved with industry. He was a consultant to McDonnell Douglas, Emerson Electric,

Westinghouse, Hi-Voltage Equipment, and NIH.

In 1963, the American Institute of Electrical Engineers (AIEE) and the Institute of Radio

Engineers (IRE) merged into the Institute of Electrical and Electronics Engineers (IEEE).

John was instrumental in the merger of the Professional Group on Automatic Control (PGAC)

of IRE and the Feedback Systems Committee of AIEE, as well as in the formation of the

Control Systems Society as one the first three IEEE societies. He was president of the IEEE

Control Systems Society in 1970. He served as a member of the IEEE Board of Directors and

director of Division I from 1974 to 1975. From 1980 to 1981, he was president of the

American Automatic Control Council (AACC), an umbrella organization in the domain of

automatic control whose members include the American Institute of Aeronautics and

Astronautics (AIAA), the American Institute of Chemical Engineers (AIChE), the American

Society of Civil Engineers (ASCE), the American Society of Mechanical Engineers (ASME),

IEEE, Instrumentation, Systems, and Automation Society (ISA), and the Society for

Computer Simulation (SCS).

John was elected a fellow of IEEE (AIEE at the time) in 1956 and a distinguished member of

the IEEE Control Systems Society in 1983. He received the Centennial Medal from IEEE in

1984 and the Richard E. Bellman Control Heritage Award form AACC in 1986. He was a

member of the National Academy of Engineering (of the USA) and an honorary member of

the Hungarian Academy of Science.

John loved classical music and enjoyed the St. Louis Symphony. He also took pleasure in

cultivating rare plants in his greenhouse. John is survived by his wife Kiyoko. Washington

University held a memorial service on February 11, 2008. He will be dearly missed by his

family, many friends, and colleagues all over the world.

###
1985: Harold Chestnut*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Harold Chestnut,** IEEE President, 1973, worked in the control field at the General Electric Company, and he helped to form the International Federation of Automatic Control (IFAC).

Harold Chestnut (IRE Senior Member, 1957) was born in New York on 25 November 1917. He earned B.S.E.E. and M.S.E.E. degrees in electrical engineering from the Massachusetts Institute of Technology (MIT) in 1939 and 1940, respectively. He received Honorary Doctorates in engineering from Case Institute of Technology in 1966 and Villanova University in 1972.

Chestnut began a life-long career in the control field with the General Electric Company in 1940. His early control work concerned stability issues in electric power systems. During the Second World War he was both a student and instructor in GE's well-known Advanced Engineering Program. During the Second World War he moved into the aeronautics and ordinance divisions of the company and remained there until 1956. In 1951 he co-authored *Servomechanisms and Regulating Systems Design, Vol. 1* with R. W. Mayer, which was the leading text in the field for many years. He later wrote Volume 2 of that book, as well as *System Engineering Tools*, and *System Engineering Methods*.

Chestnut was active in the formation of the International Federation of Automatic Control (IFAC), which grew out of discussions started in 1956 among representatives from West Germany, the USSR, France, the United Kingdom, Poland and the USA. He served as IFAC's first president from 1957 through 1959 in a cold-war compromise that gave the USA the first president and the USSR the first International Congress in Moscow in 1960.

Chestnut continued with the General Electric Company until retirement in 1983. Major assignments included serving as manager of the Systems Engineering and Analysis Branch of the Advanced Technology Laboratory, working on a wide variety of technical problems including reliability issues in rapid transit and the Apollo mission to the moon. Later in his career he returned to the field of electric power and this time the focus was power systems automation.

Following retirement, he concentrated on one of his long time passions in the control field; the potential for control concepts to provide insight into problems of international stability. His dedication to the use of control concepts in societal problems arose from his success in working with wary representatives from many countries to set up IFAC and with proud representatives from various US engineering societies to set up the AACC. Two years before his retirement, Dr. Chestnut received the prestigious Honda Prize for ecotechnology and with it a substantial financial award. After retirement he used this fund to create the "SWIIS Foundation", a private foundation devoted to identifying and implementing "supplemental ways to improve international stability". During the 1980s and 1990s, he devoted the last productive years of his life to this effort.

Before 1963, he chaired the AIEE Technical Committees on Automatic Control and on Systems, Man, and Cybernetics. He later had several other leadership roles in the IEEE, culminating in his term as President of the IEEE in 1973. He was a Fellow of the AIEE, ISA, and AAAS. He was elected to the US National Academy of Engineering in 1974 and selected as a Case Centennial Scholar in 1980. He received the IEEE Centennial Medal in 1984 and the AACC Bellman Heritage Award in 1985.

Harold Chestnut is remembered as a quiet, but persistent man. Once he determined something ought to be done, he worked until he found a way to achieve his goal. He viewed life as one large control system that needed to be nudged from time to time to keep it running smoothly and on course. Chestnut and his wife, Erma Ruth Callaway, were married for fifty-seven years and had three sons. He was a devoted family man who enjoyed hiking and sailing with his family, especially at their cottage on Schroon Lake in the Adirondacks.

On 29 August 2001, Harold Chestnut died at the age of 83 in Schenectady, New York, the town in which he spent essentially all of his long and productive life.

###
1984: John V. Breakwell*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**John Valentine Breakwell** (1917 – April 16, 1991) was a noted American control theorist and a Professor of Astronautics at Stanford University. He is remembered for his contributions to the "science and applications of astrodynamics, for discovery of flight-trajectory optimization, and for outstanding academic service." He was elected to the National Academy of Engineering in 1981 and a recipient of the Richard E. Bellman Control Heritage Award in 1983.

JOHN VALENTINE BREAKWELL, professor of astronautics at Stanford University, died on April 16, 1991, at the age of seventy-three. John was admired and respected throughout the community of guidance, control, and astrodynamics specialists. His contributions have been fundamental and broad. He was a rare combination of the scholarly professor and the practical engineer. His modest and unassuming manner, coupled with a giant intellect, endeared him to all his colleagues and students.

Elected to the National Academy of Engineering in February 1981, John will be remembered as a key founder and major developer of astrodynamics. During a career spanning more than four decades, he was one of the most skillful contributors in trajectory optimization, differential-game theory, and their aerospace applications.

John was born in Ville Nueve, Switzerland, on December 6, 1917. He received his B.A. with first-class honors in mathematics from Oxford University in 1939. England was then at war, and John left for the United States in 1941 to become an instructor (later assistant professor) in applied mathematics at Tufts University in Medford, Massachusetts. At the same time he was a doctoral student at Harvard University and received his Ph.D. in mathematics from Harvard in 1947.

John was attracted to the new field of ballistic missiles, but a security clearance was required for classified work. He applied for U.S. citizenship, and it was granted in 1949. Then he moved to the West Coast to join the North American Aviation Corporation in Downey, California, to be a part of their missile development activities under contract with the U.S. Air Force.

In 1957, the year of the Russian Sputnik, John left for Sunnyvale, California, to become a member of the staff of the Lockheed Missiles and Space Company. The advent of the Space Age provided inspiration for the wealth of contributions for which John will always be remembered.

Early in his career John demonstrated an ability for profound insight. One of his early internal memos at Lockheed gave a detailed description of how the earth's gravity gradient could be used passively to stabilize the attitude of a satellite as well as to damp its oscillations.

The major program at Lockheed when John arrived was to construct the first American military satellite—the Discoverer. There were many engineers and scientists who contributed as a team to the design and development that made that program a success. John, however, worked as an individual and tackled some of the most difficult analytical problems that the satellite field had to offer. Applying his extensive mathematical ability and technical insight, he developed methods that would support the design basis for many future satellite programs, such as the Agena.

John published the first paper on trajectory optimization using the calculus of variations in 1959 to address the new problem of placing an artificial satellite in orbit. His continuing work in optimization theory led to a wide range of applications—missile trajectories, aircraft flight-path optimization, and interplanetary flight.

In 1964 John accepted an appointment to the faculty of Stanford University and there continued the research begun at Lockheed. But now he had the opportunity to influence many Standford graduate students who were fortunate enough to have him as their teacher and adviser. The roster of his past students reads like a Who's Who in Astrodynamics.

The invention of "halo orbits" (small, closed orbits in the vicinity of the Lagrange libration points) is attributed to John Breakwell. In 1978 one of the Sun-Earth collinear points was used as the center of a halo orbit by a spacecraft known as the International Sun-Earth Explorer. One of his former students, Robert Farquhar, directed that project at the NASA Goddard Space Flight Center. John was also an important contributor to the joint NASA/Stanford Gravity Probe-B experiment designed for a new test of Einstein's theory of general relativity. It is intended to be launched from the space shuttle sometime in the next few years.

With Rufus Isaacs, John significantly advanced the modern theory of differential games. His famous 1969 paper on the "homicidal chauffeur" is a classic in that field. The work had important applications for the U.S. Air Force. It could be used to suggest possible "minimax strategies" for aerial "dogfights" between jet fighter aircraft.

John was recognized for his many outstanding achievements by the American Institute of Aeronautics and Astronautics (AIAA) with its Mechanics and Control of Flight Award in 1972. This was followed in 1974 by the American Astronautical Society presentation of the Dirk Brouwer Award for significant technical contributions to spaceflight mechanics and astrodynamics. Later he received the Humboldt Research Award for U.S. Scientists for 1977–1978.

Professor Breakwell supported his profession well through his service as an editor of the Journal of Optimization Theory and Applications, the journal of Celestial Mechanics, and the AIAA Journal. For several decades he was the astrodynamics session organizer for the annual International Astronautical Congress.

John Breakwell loved new and interesting problems to such an extent that many of his important technical contributions were never published in archival journals. He was simply too busy with something else to bother with the details of submitting papers for publication. As a result, one must often seek out various conference proceedings to locate some of his finest work.

Besides being a remarkable and inspirational teacher, John was an avid outdoorsman, hiker, and golfer. He was an accomplished musician and singer. He spoke French well enough to lecture in that language and could converse in many other languages as well. He had hoped to learn Mandarin Chinese in time for a conference in Beijing.

On the piano John could play almost any song that anyone could name and was also a fine choral singer. It is difficult to imagine how he could play the accompaniment in any key and sing any part of a choral work simultaneously. He loved Gilbert and Sullivan and sang the lead in several of their operettas produced at Stanford, including the judge in Trial by Jury and the major general in The Pirates of Penzance. He could—and frequently would—sing from memory many of the famous "patter songs."

John had a marvelously droll sense of humor, and it was truly a delight to hear any of his many anecdotes—always told with wonderful accents and authentic dialects. I will never forget the story of his misadventures in Greece when he fell into the company of some unsavory Athenians.

John Breakwell was a wonderful friend, unpretentious, generous, and kind. It was a pleasure to know him and he will be sorely missed.

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1983: Richard E. Bellman*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Richard Ernest Bellman (**August 26, 1920 – March 14, 1984) was a major figure in modern optimization, systems analysis, and control theory who developed dynamic programming (DP) in the early 1950s. Born in Brooklyn and raised in the Bronx, Bellman had a comfortable childhood that was interrupted by the Great Depression. Early on, he excelled at mathematics and was a star student in school. Bellman enrolled at the tuition-free City College of New York but was put off by the expense of the hour long commute (which left him no money for lunch) and transferred to Brooklyn College. After receiving a bachelor’s degree in 1941, he chose to pursue graduate study at Johns Hopkins University.

When the United States entered World War II, Bellman diverted his education to patriotic service, thereby avoiding conscription. He moved to Wisconsin in 1942 to teach an Army radio and electronics class and worked towards an MA from the University of Wisconsin. At Madison, Bellman met renowned Polish mathematician Stanislaw Ulam. Ulam convinced Solomon Lefschetz to offer Bellman a position at Princeton University as an Army Specialized Training Program instructor. After three semesters of coursework and teaching, Bellman reunited with Ulam at Los Alamos’s Theoretical Physics Division as part of the Army’s top secret Manhattan Project. He returned to Princeton after the war and received a PhD in mathematics in 1947.

Given Princeton’s aversion to hiring recent graduate students, Bellman accepted a summer job at the RAND Corporation in 1948. The RAND community of the late 1940s and 1950s was an exciting place for the burgeoning operations researcher. The fulltime and associated staff included **David Blackwell**, **George Dantzig**, and **Lloyd Shapley**. Bellman was quick to make a name for himself as a paper on bluffing he co-wrote with Blackwell became the subject of a New York Times article. When offered at full-time position at RAND in 1952, Bellman decided to suspend his teaching career (he had been concurrently teaching at Stanford up to that point) and focus on the development of dynamic programming with RAND personnel.

In 1965, Bellman became Professor of Mathematics, Electrical Engineering, and Medicine at the University of Southern California. He started a program of applied mathematics that included a two-year sequence of dynamic programming, control theory, invariant imbedding, and mathematical biosciences courses. Bellman’s research at USC became increasingly focused on the application of mathematics to medicine and the biological sciences. Many of his students, including **Christine Shoemaker** and **Augustine Esogbue**, have gone on to make significant contributions to OR applications. (According to Shoemaker, Bellman was ahead of his time with respect to affirmative action, and applied for and got a grant for teaching computer science to high school students in disadvantaged areas). He accepted a series of lecture engagements around the world and published many articles, books, and monographs. He additionally served on a variety of editorial boards.

Throughout his career, Bellman made significant contributions to a number of areas. He published a series of articles on dynamic programming that came together in his 1957 book, *Dynamic Programming*. In the early 1960s, Bellman became interested in the idea of embedding a particular problem within a larger class of problems as a functional approach to dynamic programming. He saw this as “DP without optimization”. This work fed into his seminal contributions to control theory and its application to real world problems.

Bellman grew concerned about the computational effectiveness of dynamic programming. He was an avid proponent for using computers and pursued the topic of artificial intelligence from a broad perspective. As his familiarity with computer science grew, so did his research on simulation. Bellman worked on bringing simulation to rational decision making and human systems.

In his lifetime, Bellman received many honors for his contributions to dynamic programming and operations research. He was awarded the John von Neumann Theory Prize by the Operations Research Society of America and The Institute of Management Sciences and was elected into the National Academy of Engineering. The American Automatic Control Council established the Richard E. Bellman Control Heritage Award in his honor for distinguished contributions to the control theory.

From NAE Website:

**BY SOLOMON W. GOLOMB**

On Friday, May 11, 1984, ''A Celebration of the Life and Accomplishments of Professor Richard E. Bellman'' was held on the Los Angeles campus of the University of Southern California. His colleagues and friends from around the world gathered to share their memories of this remarkable man. Some of their comments were published by the university as "A Tribute to Richard Bellman." We cannot include them all in this volume, but the following excerpts provide an indication of the extraordinary impact Dick Bellman had in his life and work.

Richard Bellman was a towering figure among the contributors to modern control theory and systems analysis. His invention of dynamic programming marked the beginning of a new era in the analysis and optimizations of large- scale systems and opened a way for the application of sophisticated computer- oriented techniques in a wide variety of problem areas, ranging from the design of guidance systems for space vehicles to pest control, network routing, and speech recognition.

Richard Bellman was born in Brooklyn, New York, on August 26, 1920. He received a B.A. from Brooklyn College in 1941 and an M.A. in mathematics from the University of Wisconsin in 1943.

As part of his service in the U.S. Army, he spent two years at Los Alamos, where he was a member of a group in the Theoretical Physics Division headed by Dr. R. Marshak. Leaving Los Alamos in 1946, he entered Princeton and completed his work toward a Ph.D. in a record time of three months.

In the immediate postwar years, Princeton was a center of defense-motivated research activity in nonlinear differential equations. As a graduate student at Princeton, Bellman became a member of an inner circle of young mathematicians led by Professor Solomon Lefschetz. His doctoral research under Lefschetz resulted in his first major work, entitled Stability Theory of Differential Equations, in 1946. This work was subsequently published as a book by McGraw-Hill in 1953 and is regarded as a classic in its field.

After staying on the faculty of the Mathematics Department at Princeton from 1946 to 1948, Bellman left the east coast to become a member of the faculty of Stanford University in 1948 and then joined the newly established Rand Corporation in Santa Monica, California, in 1953. At Rand, he became interested in the theory of multistage decision processes, which was then emerging as an important problem area in the control of both small-and large-scale systems. His invention of dynamic programming in 1953 was a major breakthrough in the theory of multistage decision processes. This breakthrough set the stage for the application of functional equation techniques in a wide spectrum of fields extending far beyond the problem areas that provided the initial motivation for his ideas.

In addition to his fundamental and far-ranging work on dynamic programming, Richard Bellman made a number of important contributions to both pure and applied mathematics. Particularly worthy of note is his work on invariant imbedding, which by replacing two-point boundary problems with initial value problems makes the calculation of the solution more direct as well as much more efficient. His work on quasi-linearization and its applications to system identification has led to many results of a practical nature in the study of nonlinear systems.

In recent years, Bellman's research activity focused increasingly on the application of mathematics to medicine and biological sciences. His interest in these and related areas reflected his strong conviction that mathematics should not be content with being a beautiful castle with no bridges to the real world. There was a time when Bellman's outspoken criticisms of the elitist attitudes of the mathematical establishment were greeted with hostility and derision. Today, when pure mathematicians are experiencing difficulties in finding suitable jobs, many of those who disagreed with Bellman will concede that he was right.

Bellman left the Rand Corporation in 1965 to join the faculty of the University of Southern California, where he held joint appointments as professor of mathematics, electrical engineering, and medicine—appointments he held until his death on March 19, 1984. A prolific writer, he authored over six hundred published research papers, approximately forty books, and several monographs.

Richard Bellman's fundamental contributions to science and engineering won him many honors and worldwide recognition. Prominent among these are the following: first Norbert Wiener Prize in Applied Mathematics, awarded in 1970 jointly by the American Mathematical Society and the Society for Industrial and Applied Mathematics; first Dickson Prize from Carnegie Mellon University in 1970; the John von Neumann Theory Award bestowed in 1976 jointly by the Institute of Management Sciences and the Operations Research Society of America; and the 1979 Institute of Electrical and Electronics Engineers' Medal of Honor in recognition of the invention of dynamic programming.

His honorary degrees include the doctor of science of the University of Aberdeen, Scotland, in 1973; the doctor of laws of the University of Southern California in 1974; and the doctor of mathematics of the University of Waterloo, Canada, in 1975. He was elected a fellow of the American Academy of Arts and Sciences in 1975, a member of the National Academy of Engineering in 1977, and a member of the National Academy of Sciences in 1983. [R. E. Larson and L. A. Zadeh]

In celebrating his life here today, let us also celebrate his good humor and his steadfast determination to produce, to achieve, to give, and to give joyfully, in the face of circumstances that would have overwhelmed and crushed men of lesser caliber. In these superb human qualities, as in his creative work, I firmly believe that Dick Bellman has lived on a level at least the equal of Beethoven. [Roger Jelliffe]

Of his great contributions, I think that he would feel that the students he inspired were among the most important; through them his ideas go on and will be expanded to meet the needs of expanding technology and human need. The only function that Richard Bellman could not bound was his own energy and imagination. [Fleur Mitchell]

The measure of a man is the number of people whose lives he has influenced and the contributions he has made. Dick Bellman not only influenced the lives of many people, but he had the rare genius to be able to contribute to many fields. [Alan Rowe]

Someone said that the Soviet Union is not just another country—it's another world, another planet. And it, indeed, is. But the stars, we might say, continuing the metaphor, are the same on every planet. They shine for everyone and everywhere. Dick was, and is, such a star. His influence in the Soviet Union is deep and profound. His works penetrated many areas of Soviet academia, industry, and economy in general. From the academic point of view, there is not a single university that does not offer courses based on Dick's works. Hundreds of papers continuing Dick's ideas are published annually in Soviet journals. It is hardly possible to find a researcher in the quantitative sciences and engineering unfamiliar with, at least, the term "Dynamic Programming."

Dick's name is probably cited more at Soviet scientific meetings than at American ones. As an indirect proof of this, let me just mention that Dick was invited to be the main speaker at the first, and only, International Congress of Mathematicians held in Russia, in 1966. More than ten of his books have been translated and published in the Soviet Union. No other American scientist has been given such honors in the USSR.

This is one of the trademarks of Dick's creative work: Truly a mathematician of the twentieth century, he viewed a computer as a tool as well as an important source of mathematical work. His results are always practical and easily applicable. Probably, this is why his mathematical discoveries have important engineering implications in such areas as system science, control, communications, bioengineering, etc. The depth and importance of problems considered, the practical applicability, and the timeliness of his works, this is what, in my view, made the largest impact and defined Dick's influence on Soviet science.

Dick gave all of us, his students and friends in every country throughout the world, an ultimate example of scientific creativity and success, personal courage and strength, friendly devotion and support. [Semyon Meerkov]

He was contemptuous of the established order and intolerant of mediocrity. He was strikingly handsome, brilliant, and a master of both the spoken and the written word. Clearly, he was a man of towering intellect and almost equally towering ego. But what I could see was that behind the facade of arrogance and bravado was a man who was capable of great kindness, a man who was decent, straightforward and generous in the extreme.

He died at peace with himself. But his ideas will continue to live, and so will the fond memories of all of us who knew him not only as a brilliant thinker and arrogant personality, but, more importantly, as a man of great nobility of character and a warm, thoughtful, caring human being. [Lofti Zadeh]

At the time of his death at age sixty-three, Richard Bellman had just completed his autobiography, The Eye of the Hurricane, World Scientific Publications, Singapore, 1984. He is survived by his wife, Nina; his son, Eric; and his daughter, Kirstie.

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1982: Irving Lefkowitz*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Irving Lefkowitz** (July 8, 1921 – June 21, 2015) was an American control engineer and Professor Emeritus at the Case Western Reserve University who made significant contributions to process dynamics, advanced control, and computer-based integrated and hierarchical systems control. Lefkowitz was a Life Fellow of the IEEE Control Systems Society, and a recipient of the Richard E. Bellman Control Heritage Award (1982).

He began his career in the industry working for Seagram, first in Baltimore, and later in Louisville, where he became director of corporate instrumentation and control research.

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1981: Charles S. Draper*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

From NAE Website:

**BY ROBERT A. DUFFY**

**Charles Stark Draper,** a complex genius of the twentieth century, was a modern version of the Renaissance man. A teacher, scientist, and engineer by profession, but self-described as a "greasy thumb mechanic," he was born on October 2, 1901. He grew up in the small Missouri town of Windsor where he went through the town's public school system. He entered college when he was fifteen years old at the Rolla campus of the University of Missouri as a liberal arts student. After two years, he transferred to Stanford University from which he graduated in 1922 with a B.A. in psychology.

Among all of the other things at which he excelled, Doc understood human beings and he understood how to challenge them towards a common goal. The psychology curriculum probably did no harm, but instinctively Doc knew how to lead and how to get people to follow to a common goal. He naturally interacted well with people. He liked and was interested in his students and his colleagues. His students and colleagues loved him in return. Above all, he lived for his technology—his life became the technology he nurtured to useful maturity.

He earned a B.S. in electro-chemical engineering at the Massachusetts Institute of Technology (MIT) where he went after Stanford. Despite short defections, he essentially remained at MIT for the rest of his life, immersed and totally involved in the developments associated with his measurement and control instrumentation. Legend has it that he took more courses at MIT than anyone else has ever taken. There he earned an M.S. in 1928 and a Ph.D. in physics in 1938. Doc's involvement with MIT became convincingly more permanent by the mid-1930s when he became an assistant, then an associate professor in aeronautical engineering. By 1939 he was a full professor.

It was during those early days, however, before advancing as a member of the junior faculty that he tried and failed to become an Air Corps pilot. Perhaps as a consequence of this rejection he enrolled in and quickly passed a civilian course qualifying him to fly. He acquired an airplane and recognized the need to improve the pilot's flight instrumentation. He taught a course in aircraft instruments concurrently. To make his point about instrumentation inadequacies, he took Professor Jay Stratton, later to be president of MIT, up in his airplane and showed him how one used the flight instruments, indicating shortcomings he had perceived. He caused the airplane to perform stalls and spins over Boston's outer harbor. Professor Stratton was duly impressed by the inadequacy of the instrumentation and Draper's ideas about needed improvements. He did not fly again with Draper!

Draper really pursued three major thrusts in his life's work: measurement of physical processes, primarily the instrumentation of dynamic geometry; the systems engineering of those processes in the larger context of new concepts; and, finally, the education of the engineering profession. Following his early experiments with basic instruments, the solution of the dynamic geometry problems associated with gunfire control, both on fixed-wing aircraft mounted guns and with deck-mounted antiaircraft guns, occurred first. The second major thrust was the systems study, analysis, and synthesis that came from using instrumentation to measure quantities that are part of a larger issue. Here his conceptualization and vision were applied to what we later termed the systems engineering process. The solution was usually implemented by some control means using intelligence from the sensory elements processed through what Draper termed the informetics of some computational element.

In the development of this process, Draper and his people, Bob Seamans leading, developed and demonstrated the first all-attitude adaptive autopilot. Rocket and gunfire control systems and the early inertial navigation and guidance systems followed.

In the age of Apollo, the unheard-of challenge of putting men on the moon and safely returning them to Earth appealed to Doc as a prime application for his technology. The creation of the guidance, navigation, and control elements in the Apollo program was inspired by Draper although many others made fundamental contributions.

Underlying all of that was the third, and perhaps the most important, of all his interests—the education process that he created when he had both the MIT Aeronautical Engineering Department and his Instrumentation Lab under his direct control. ''Mens et Manus,'' minds and hands—the MIT motto—had real meaning in this context. The invention and creation of the elements that went with measuring and controlling complex functions and processes served as a superb environment for learning. His Instrumentation Laboratory, the Aero Department and its distinguished faculty, and the long list of his students led by him into leadership positions are as much his legacy as the magnificent systems capabilities he created. His entrepreneurial spirit and verve, concepts like navigating in a "black box" so that a submerged vehicle can know its position and velocity without external reference, the creation of spacecraft and booster guidance systems, a mathematical language—the so-called Draper notation— optimalization as a control theory, and the conceptualization with Milton Trageser of a Mars mission in the 1950s are all as much a part of this genius as his care and concern for children and the young.

Draper became a public person with the Apollo program. Although he had been honored by both the Air Force and the Navy for his wartime contributions, it wasn't until the Apollo program began that the nation as a whole knew Charles Stark Draper. Even before President Kennedy made the public announcement that within the decade man would be landed on the moon and brought back safely to Earth, Draper, always with an ear to the ground, had seen that evolving challenge as applying to him and his laboratory. He and his people, using the Mars reconnaissance system design as a background, had been working for several years attempting to get government support. With the formation of the Apollo program as the triggering event, he went to James Webb, who had been appointed administrator of the new National Aeronautics and Space Administration, offering to design, build, and fly the Apollo guidance, control, and navigation system. Webb and Hugh Dryden (of National Advisory Committee for Aeronautics heritage) believed Draper's statements to the effect that navigation to the vicinity of the moon without external aid was feasible. The Instrumentation Laboratory received the first contract award made by NASA for the moon program.

The design of the guidance, navigation, and control equipment was not an extraordinary task for the Instrumentation Laboratory. Thus, the challenge for the Instrumentation Laboratory was not to prove a concept or even a technology but rather to adapt the system to the extraordinary distances and the demanding reliability requirements of the manned moon mission. In actuality the version of Draper's system implemented by Dave Hoag and his team used both a star tracker and accepted radio position and velocity updates from NASA's long base-line earth-based tracking stations—a sort of belt-and-suspenders solution that worked.

Draper died on July 25, 1987. Draper Laboratory along with the MIT community honored him in a memorial service during the fall academic session of 1987 when his long-term friends and colleagues had returned to the campus. MIT has two endowed chairs in his name (for junior faculty members) in the Aeronautics and Astronautics Department. The Draper Laboratory awards graduate fellowships at MIT and supports military officers studying for graduate degrees at MIT, all in Draper's name.

Dr. Draper was elected to the National Academy of Sciences and the National Academy of Engineering, and as a foreign associate member to the French Academy of Sciences. He was president of the von Kármán Foundation, The International Academy of Astronautics, and The National Inventors Council. He had many academic honorary degrees and citations.

The board of directors of the Draper Laboratory authorized an annual award in Draper's name to be administered by the National Academy of Engineering. The award honors the engineer who has contributed most to engineering in the opinion of the NAE-appointed selection committee. The award approximates the Nobel award in value, is permanently endowed, and is expected to be given every two years.

Dr. Draper is survived by his wife, the former Ivy Hurd Willard, and four children, James, Martha Draper Ditmeyer, John, and Michael. The Drapers lived for many years in Newton, Massachusetts, where Mrs. Draper now resides, remembered fondly for her strong support of Draper through many long years of extended separations, interminable Saturday sessions in her home, and memorable parties and picnics for Doc's students and colleagues.

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1980: Nathaniel B. Nichols*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Nathaniel B. Nichols** (1914–1997) was an American control engineer who made significant contributions to the field of control theory. He is well known for his book *Theory of Servomechanisms*, one of the most widely read books in control engineering.

Nichols received a B.S. in chemistry in 1936 from Central Michigan University, and an M.S. in physics from the University of Michigan in 1937.

He was President of the IEEE Control Systems Society in 1968 and the American Automatic Control Council in 1974 and in 1975; and a recipient of the Rufus Oldenburger Medal (1969) and the Richard E. Bellman Control Heritage Award (1980).

Nathaniel B. Nichols was born in Nottawa Township, Mich., USA, Nichols received a B.S. in chemistry in 1936 from Central Michigan University, Mount Pleasant, Mich., and an M.S. in physics from the University of Michigan in 1937.

He was a Servo Group leader at the MIT Radiation Laboratory, Cambridge, Mass., USA, from 1942-46, where he developed automatic radar tracking and fire control computers, and power driven servomechanisms. He was director of research at Taylor Instrument Company from 1946-50 and later became chief engineer at Taylor. He joined Aerospace Corporation, San Bernadino, Calif., in 1963 as director of the sensing and information division, and retired in 1987.

In 1996 the International Federation of Automatic Control established the Nathaniel B. Nichols Medal to be awarded for distinguished achievements in control engineering. In addition, the Nichols Chart, the Ziegler-Nichols PID tuning algorithms, and the classic MIT Radiation Lab book "Theory of Servomechanisms," co-authored by Nichols, are cornerstones of control practice.

Nichols died on April 17th, 1997.

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1979: Hendrik W. Bode*Recipient of Richard E. Bellman Control Heritage Award *

*Recipient of Richard E. Bellman Control Heritage Award*

Biography:

**Hendrik Wade Bode** was born 24 December 1905, in Madison, Wisconsin. He attended High School in Urbana, Illinois, and Normal School in Tempe, Arizona. Continuing his education, he received his B.A. Degree in 1924 from Ohio State University and his M.A. Degree from the same institution in 1926. During this time, he was a teaching assistant for one year. Coming immediately to Bell Telephone Laboratories, he began his career with electric filter and equalizer design. Three years later, in 1929, he transferred to the Mathematical Research Group, where he specialized in research pertaining to electrical networks theory and to its application to long distance communication facilities. While employed at Bell Laboratories, he attended Columbia University Graduate School, and received the Ph.D. Degree in 1935.

With the outbreak of World War II, Bode turned to the development of electronic fire control devices, and, in recognition of his contributions in this field, he was awarded the Presidential Certificate of Merit (in 1948) for his work in the field of fire control under the NDRC of the OSRD.

Bode's work in electric filters and equalizers led to broader aspects of communication transmission, resulting in the publication in 1945 of his book Network Analysis and Feedback Amplifier Design, which is considered a classic in its field. He has been granted 25 patents in electrical engineering and systems design, including patents for transmission networks, transformer systems, electrical wave amplification, broadband amplifiers, and artillery computing.

Following World War II, he worked in part on military problems, including those in missile systems, and in part on modern communication theory. He has been involved in the work of a number of government committees, and has written many scientific and technical articles for publication.

In 1944, Bode was placed in charge of the Mathematics Research Group at Bell Laboratories, and in 1952 became Director of Mathematical Research. In 1955 he was appointed Director of Research in the Physical Sciences, and in 1958 assumed the responsibilities of Vice-President in charge of one of two vice-presidential areas devoted to military development.

Bode retired from Bell Telephone Laboratories in October 1967, at the age of 61, after 41 years service in a distinguished career. He was immediately elected Gordon McKay Professor of Systems Engineering at Harvard University. In his new career, Bode is teaching and directing graduate student research, and conducting a seminar on the planning and conducting of engineering and development programs. He is collecting information on military projects particularly with respect to research in areas where there are difficulties concerned with decision making, and is also studying the relationship of technology to social problems.

Bode is a member or fellow of a number of scientific and engineering societies, including Fellow, IEEE; Fellow, American Physical Society; Member, American Mathematical Society; Member, Society for Industrial and Applied Mathematics; and Fellow, American Academy of Arts and Sciences. He has also achieved further distinction by being elected to the National Academy of Sciences, and the National Academy of Engineering. He was awarded the 1969 IEEE Edison Medal "For fundamental contributions to the arts of communication, computation, and control; for leadership in bringing mathematical science to bear on engineering problems; and for guidance and creative counsel in systems engineering."

While Bode's chief interests have been science and engineering, be has found time to pursue two major hobbies. One of these is reading, in which he is known as an avid reader on a wide variety of subjects. And, as frequently happens, persons from the Middle West and Southwestern parts of the United States develop an interest in boating when they come to the Eastern coast. Bode engaged in sail-boating on Long Island Sound during his early career in the New York area, and after World War II, he acquired a converted LCT, which he operated on the upper reaches of the Chesapeake Bay adjacent to the Eastern Shore of Maryland. He is also a "do-it-your-selfer," interested particularly in gardening around his home. Bode's wife is the former Barbara Poore. They have two children, Katherine Anne Bode and Beatrice Anne Hathaway Bode.