Richard D. Braatz

Last updated
Richard D. Braatz
Born (1966-07-18) July 18, 1966 (age 57)
NationalityAmerican
Alma mater Oregon State University
Caltech
Awards Donald P. Eckman Award
Antonio Ruberti Young Researcher Prize
Hertz Foundation
National Academy of Engineering
Scientific career
Fields Control theory
Institutions Massachusetts Institute of Technology
Doctoral advisor Manfred Morari

Richard D. Braatz (born July 19, 1966) is the Edwin R. Gilliland Professor at the Massachusetts Institute of Technology known for his research in control theory and its applications to chemical, pharmaceutical, and materials systems.

He has received many honors, including the Hertz Foundation Thesis Prize, the Donald P. Eckman Award and John R. Ragazzini Award from the American Automatic Control Council, the Curtis W. McGraw Research Award from the Engineering Research Council, and the Antonio Ruberti Young Researcher Prize from the Antonio Ruberti Foundation and IEEE Control Systems Society. Braatz became a member of the National Academy of Engineering in 2019. [1] He is a Fellow of the International Federation of Automatic Control, the Institute of Electrical and Electronics Engineers, and the American Association for the Advancement of Science.

Braatz graduated from Oregon State University with a B.S. in 1988 with an undergraduate thesis on heat exchanger design supervised by Octave Levenspiel. He worked at Chevron Research and Avery Dennison before receiving his M.S. and Ph.D. in robust control from the California Institute of Technology under the direction of Professor Manfred Morari. His thesis included a proof that robust control problems are NP-hard. [2] After a postdoctoral year at DuPont, he moved to the University of Illinois at Urbana-Champaign, where he rose to the position of millennium chair and professor, with positions in chemical and biomolecular engineering, electrical and computer engineering, mechanical science and engineering, bioengineering, applied mathematics, and computational science and engineering. Braatz made contributions in the areas of robust optimal control, [3] [4] fault detection and diagnosis, [5] [6] sheet and film processes, [7] [8] and crystallization. [9]

After serving as a visiting scholar for a year at Harvard University, in 2010 he moved to MIT's department of chemical engineering, [10] where he continues research in systems and control theory and its applications.

Related Research Articles

Model predictive control (MPC) is an advanced method of process control that is used to control a process while satisfying a set of constraints. It has been in use in the process industries in chemical plants and oil refineries since the 1980s. In recent years it has also been used in power system balancing models and in power electronics. Model predictive controllers rely on dynamic models of the process, most often linear empirical models obtained by system identification. The main advantage of MPC is the fact that it allows the current timeslot to be optimized, while keeping future timeslots in account. This is achieved by optimizing a finite time-horizon, but only implementing the current timeslot and then optimizing again, repeatedly, thus differing from a linear–quadratic regulator (LQR). Also MPC has the ability to anticipate future events and can take control actions accordingly. PID controllers do not have this predictive ability. MPC is nearly universally implemented as a digital control, although there is research into achieving faster response times with specially designed analog circuitry.

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<span class="mw-page-title-main">American Automatic Control Council</span>

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Michael Athans was a Greek-American control theorist and a Professor Emeritus in the Department of Electrical Engineering and Computer Science at the Massachusetts Institute of Technology. He was a Fellow of the IEEE (1973) and a Fellow of the AAAS (1977). He was the recipient of numerous awards for his contributions in the field of control theory. A pioneer in the field of control theory, he helped shape modern control theory and spearheaded the field of multivariable control system design and the field of robust control. Athans was a member of the technical staff at Lincoln Laboratory from 1961 to 1964, and a Department of Electrical Engineering and Computer Science faculty member from 1964 to 1998. Upon retirement, Athans moved to Lisbon, Portugal, where he was an Invited Research Professor in the Institute for Systems and Robotics, Instituto Superior Técnico where he received a honoris causa doctorate from the Universidade Técnica de Lisboa in 2011.

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Fault detection, isolation, and recovery (FDIR) is a subfield of control engineering which concerns itself with monitoring a system, identifying when a fault has occurred, and pinpointing the type of fault and its location. Two approaches can be distinguished: A direct pattern recognition of sensor readings that indicate a fault and an analysis of the discrepancy between the sensor readings and expected values, derived from some model. In the latter case, it is typical that a fault is said to be detected if the discrepancy or residual goes above a certain threshold. It is then the task of fault isolation to categorize the type of fault and its location in the machinery. Fault detection and isolation (FDI) techniques can be broadly classified into two categories. These include model-based FDI and signal processing based FDI.

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Dimitri Panteli Bertsekas is an applied mathematician, electrical engineer, and computer scientist, a McAfee Professor at the Department of Electrical Engineering and Computer Science in School of Engineering at the Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts, and also a Fulton Professor of Computational Decision Making at Arizona State University, Tempe.

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<span class="mw-page-title-main">Wassim Michael Haddad</span> Lebanese-Greek-American mathematician

Wassim Michael Haddad is a Lebanese-Greek-American applied mathematician, scientist, and engineer, with research specialization in the areas of dynamical systems and control. His research has led to fundamental breakthroughs in applied mathematics, thermodynamics, stability theory, robust control, dynamical system theory, and neuroscience. Professor Haddad is a member of the faculty of the School of Aerospace Engineering at Georgia Institute of Technology, where he holds the rank of Professor and Chair of the Flight Mechanics and Control Discipline. Dr. Haddad is a member of the Academy of Nonlinear SciencesArchived 2016-03-04 at the Wayback Machine for recognition of paramount contributions to the fields of nonlinear stability theory, nonlinear dynamical systems, and nonlinear control and an IEEE Fellow for contributions to robust, nonlinear, and hybrid control systems.

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References

  1. "National Academy of Engineering Elects 86 Members and 18 Foreign Members". NAE Website. Retrieved 2019-04-30.
  2. Braatz, R.D.; Young, P.M.; Doyle, J.C. (1990), "Computational Complexity of mu calculation" (PDF), IEEE Transactions on Automatic Control, 39 (5): 1000–1002, doi:10.1109/9.284879
  3. VanAntwerp, J.G.; Braatz, R.D. (2000), "A Tutorial on Linear and Bilinear Matrix Inequalities", Journal of Process Control, 10 (4): 363–385, doi:10.1016/S0959-1524(99)00056-6
  4. Nagy, Z.K.; Braatz, R.D. (2003), "Robust nonlinear model predictive control of batch processes", AIChE Journal, 49 (7): 1776–1786, Bibcode:2003AIChE..49.1776N, doi:10.1002/aic.690490715
  5. Chiang, L.H.; Russell, E.L.; Braatz, R.D. (2000), "Fault diagnosis in chemical processes using Fisher discriminant analysis, discriminant partial least squares, and principal component analysis", Chemometrics & Intelligent Laboratory Systems, 50 (2): 243–252, doi:10.1016/S0169-7439(99)00061-1
  6. Chiang, L.H.; Russell, E.L.; Braatz, R.D. (2001), Fault Detection and Diagnosis in Industrial Systems, London: Springer-Verlag
  7. Hovd, M.; Braatz, R.D.; Skogestad, S. (1997), "SVD controllers for H2, H-infinity, and Mu-optimal control", Automatica, 33 (3): 433–439, doi:10.1016/S0005-1098(96)00167-7
  8. Featherstone, A.P.; VanAntwerp, J.G.; Braatz, R.D. (2000), Identification and control of sheet and film processes, London: Springer-Verlag
  9. Ma, D.L.; Tafti, D.K..; Braatz, R.D. (2002), "Optimal control and simulation of multidimensional crystallization processes", Computers & Chemical Engineering, 26 (7–8): 1103–1116, doi:10.1016/S0098-1354(02)00033-9
  10. "Richard D. Braatz – MIT Chemical Engineering".

Sources