题目:     Computation of H-infinity Controllers for Infinite Dimensional Plants

报告人:  Prof. Hitay Ozbay      

Department of Electrical & Electronics Engineering

Bilkent University at Ankara , Turkey

时间：  4月11日 上午  10:00

地址：   浙江大学 控制系工控所新楼211

Abstract: In this talk feedback control of linear systems with dynamic uncertainty will be discussed for plant models whose input-output behaviors are represented by irrational transfer functions. We review basic robust control problem objectives and present the so-called skew Toeplitz approach, for the solution of the mixed sensitivity minimization. We compute the largest singular value, and the corresponding singular vector, of an infinite dimensional Hankel+Toeplitz operator using a finite set of linear equations. The number of equations is n+l where n is the order of the sensitivity weight and l is the number of open right half plane poles of the plant. A Matlab based code will be presented with illustrative examples.

题目:     Robust Control of Infinite Dimensional Systems:   Applications

报告人:  Prof. Hitay Ozbay      

Department of Electrical & Electronics Engineering

Bilkent University at Ankara , Turkey

时间：  4月12日 上午  10:00

地址：   浙江大学 控制系工控所新楼211

Abstract: The purpose of this paper is to give examples of numerical computations of optimal and suboptimal robust controllers on different examples. Applications to infinite dimensional flexible beam models and systems with time delays are considered.  We also focus on robust stability and performance problems for data flow control in computer communication networks, and give an application example from aerodynamic flow control: suppression of cavity flow oscillations. Finally, a distributed delay system example is given; it is a nonlinear model for cell dynamics in leukemia.

Bio: Hitay Ozbay is a Professor of Electrical and Electronics Engineering at BilkentUniversity, (Ankara, Turkey). He received the B.Sc. degree in Electrical Engineering from Middle East Technical University (Ankara, Turkey) in 1985, the M.Eng degree in Electrical Engineering from McGill University (Montreal, Canada) in 1987, and the Ph.D. degree in Control Sciences and Dynamical Systems from the University of Minnesota, (Minneapolis, USA) in 1989. Dr.Ozbay was with the University of Rhode Island (1989-1990) and The OhioStateUniversity (1991-2006), where he was a Professor of Electrical and Computer Engineering, prior to joining BilkentUniversity in 2002, on leave from OSU. He served as an Associate Editor on the Editorial Board of the IEEE Transactions on Automatic Control (1997-1999), and Automatica, (2001-2007), and was a member of the Board of Governors of the IEEE Control Systems Society (1999). He is a vice-chair of the IFAC Technical Committee on Networked Control Systems since 2005.