Control Systems with Actuator Saturation: An Anticipatory Anti-windup Design

Thursday, April 8, 2010 - 11:00am - 12:00pm EDT

  • Location:Dibner Building, LC 400
    New York

Speaker: Professor Zongli Lin

Faculty Host: Professor Zhong-Ping Jiang

Abstract

Every physical actuator is subject to saturation. It has been well recognized that, when the actuator saturates, the performance of the closed-loop system designed without considering actuator saturation may seriously deteriorate. In extreme cases, the system stability may even be lost.  This talk will illustrate how actuator saturation adversely affects the behavior of a control system and explain how such adverse effects of actuator saturation can be mitigated. In particular, our recent work on the design of an anticipatory anti-windup design is discussed. Anti-windup is a popular way to mitigate the adverse effects of actuator saturation. 

About the Speaker

Zongli Lin is a professor of electrical and computer engineering at University of Virginia and a Cheung Kong Visiting Professor with the Department of Automation at Shanghai Jiao Tong University. He received his BS degree in mathematics and computer science from Xiamen University, Xiamen, China, in 1983, his Master of Engineering degree in automatic control from Chinese Academy of Space Technology, Beijing, China, in 1989, and his PhD degree in electrical and computer engineering from Washington State University, Pullman, Washington, in 1994.  His current research interests include nonlinear control, robust control, and control applications. In these areas, he has published three books and several papers. He was an Associate Editor of IEEE Transactions on Automatic Control and IEEE/ASME Transactions on Mechatronics and has served on the operating committees and program committees of several conferences. He currently serves on the editorial boards of several journals and book series, including Automatica, Systems & Control Letters, and IEEE Control Systems Magazine. He is an elected member of the Board of Governors of the IEEE Control Systems Society and a Fellow of the IEEE.