学术报告第201947期

报告题目：Feedback Stabilization over Power-Constrained Gaussian Channels

报 告 人：Zhan Shu，英国University of Southampton

报告时间：2019年8月1日10:00-11:00

报告地点：南一楼中311室

报告摘要：With the widespread use of communication technology in control systems, a series of issues that have not been encountered in traditional control systems appear. A fundamental problem is that how various communication constraints would affect the stability and performance of a control system. This study is concerned with feedback stabilization of linear time-invariant (LTI) systems over Gaussian channels subject to a total power constraint. Both continuous-time and discrete-time systems are treated under the framework of H2 control, and necessary/sufficient conditions for stabilizability are established in terms of inequalities involving unstable plant poles, transmitted power, and noise variances. These results are further used to clarify the relationship between channel capacity and stabilizability. A significant discovery is that even for LTI systems, the optimal control/communication strategy may be no longer LTI, and nonlinear/time-varying strategies would be necessary.

报告人简介：Zhan Shu was born in Nanchang, Jiangxi province, China, in 1982. He received his B.Eng. degree in Automation from Huazhong University of Science and Technology (HUST) in 2003, and the Ph.D. degree in Control Engineering from The University of Hong Kong (HKU) in 2008. From 2008 to 2009, he worked in HKU as a research assistant/associate. From 2009 to 2011, he was a postdoctoral researcher in the Hamilton Institute, National University of Ireland, Maynooth. He joined the University of Southampton, U.K., in 2011, taking a lectureship in Faculty of Engineering and the Environment. He is a Senior Member of IEEE and an invited reviewer of Mathematical Review of the American Mathematical Society. He serves an Associate Editor for Mathematical Problems in Engineering, an Associate Editor for Asian Journal of Control, an Associate Editor for Journal of The Franklin Institute, an Associate Editor for IET Electronics Letter, an Associate Editor for Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, and a member of the IEEE Control Systems Society Conference Editorial Board. His current research interests include hybrid systems, stochastic systems, positive systems, delay systems, robust control, decentralized control, estimation and filtering, model free control, control application in energy systems, systems biology with emphasis on cell regulating networks and immunology.