Observer-based H-infinity output feedback control with feedback gain and observer gain variations for Delta operator system  

作　　者：Ruiquan LIN Fuwen YANG Renchong PENG 

机构地区：[1]College of Electrical Engineering and Automation, Fuzhou University, Fuzhou Fujian 350002, China

出　　处：《控制理论与应用（英文版）》2009年第2期169-174,共6页

基　　金：supported by the Natural Science Foundation of Fujian Province (No.2008J04016);the Fujian Education Bureau Foundation (No.JA07075)

摘　　要：Considering that the controller feedback gain and the observer gain are of additive norm-bounded variations, a design method of observer-based H-infinity output feedback controller for uncertain Delta operator systems is proposed in this paper. A sufficient condition of such controllers is presented in linear matrix inequality （LMI） forms. A numerical example is then given to illustrate the effectiveness of this method, that is, the obtained controller guarantees the closed-loop system asymptotically stable and the expected H-infinity performance even if the controller feedback gain and the observer gain are varied.Considering that the controller feedback gain and the observer gain are of additive norm-bounded variations, a design method of observer-based H-infinity output feedback controller for uncertain Delta operator systems is proposed in this paper. A sufficient condition of such controllers is presented in linear matrix inequality （LMI） forms. A numerical example is then given to illustrate the effectiveness of this method, that is, the obtained controller guarantees the closed-loop system asymptotically stable and the expected H-infinity performance even if the controller feedback gain and the observer gain are varied.

关 键 词：OBSERVER Delta operator system Robust control Output feedback LMI 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TP273.1[自动化与计算机技术—控制科学与工程]