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Boundary Control of Partial Differential Equations Modeling Turbulent flows

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Abstract:
Distributed parameter dynamics are essential in applications like fluids and flexible structures. Until recently, control tools for such systems relied on advanced techniques for partial differential equations, semi-group theory, Sobolev spaces, etc, and required solution of operator Riccati equations. A new set of tools, based on infinite dimensional extensions of backstepping, and accessible to engineers with background not much beyond calculus, yields explicit formulae for boundary controllers for several classes of problems of practical interest. The new tools are particularly inspired by applications to fluid flows, either for turbulence suppression or for enhancement of fluid mixing in problems like combustion, and are implementable with MEMS/synthetic jet actuators and sensors. I will present designs for channels, pipes, jets and bluff bodies, motivated by aerospace applications.

http://mae.ucsd.edu/research/krstic
Type of Seminar:
Public Seminar
Speaker:
Prof. Miroslav Krstic
University of California, San Diego, USA
Date/Time:
Sep 06, 2004   17:15
Location:

ETH-Zentrum, ETZ E6, Gloriastrasse 35, 8006 Zurich
Contact Person:

Prof. M. Morari
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Biographical Sketch:
Miroslav Krstic is Professor of Mechanical and Aerospace Egineering at University of California, San Diego.. He got his PhD in 1994 at University of California at Santa Barbara, with Petar Kokotovic. Krstic is an IEEE Fellow and has received the US National Science Foundation Career Award, the Office of Naval Research Young Investigator Award, the Presidential PECASE Award, the George S. Axelby Outstanding Paper Award of IEEE Transactions on Automatic Control, and the O. Hugo Schuck Award for the best paper at American Control Conference. Krstic is a co-author of the books Nonlinear and Adaptive Control Design (Wiley, 1995), Stabilization of Nonlinear Uncertain Systems (Springer-Verlag, 1998), Flow Control by Feedback (Springer-Verlag, 2002), and Real Time Optimization by Extremum Seeking Control (Wiley, 2003). He has served as Associate Editor for the IEEE Transactions on Automatic Control, International Journal of Adaptive Control and Signal Processing, and Systems and Control Letters. Krstic is a Vice President for Technical Activities and a member of the Board of Governors of the IEEE Control Systems Society.