Observer-based H-infinity control in multiple channel networked control systems with random packet dropouts  

作　　者：Weiwei CHE Jianliang WANG Guanghong YANG 

机构地区：[1]School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798 [2]School of Information Science and Engineering, Northeastern University, Shenyang Liaoning 110004, China

出　　处：《控制理论与应用（英文版）》2010年第3期359-367,共9页

基　　金：supported by the Defence Science Organisation-National Laboratories (DSO-NL),Singapore (No.DSOCL06184)

摘　　要：This paper investigates the observer-based H-infinity control problem for networked control systems （NCSs） with random packet dropouts. A general packet dropout model with multiple independent stochastic variables in the multiple channels case is adopted to describe the data missing in the limited communication channels. With the consideration of the sensor-to-controller and controller-to-actuator packet dropouts at the same time, a new method is pro- posed based on a separation lemma to design an observer-based H-infinity controller, which exponentially stabilizes the closed-loop system in the sense of mean square and also achieves a prescribed H-infinity disturbance attenuation level. A numerical example is given to illustrate the effectiveness of the proposed control method.This paper investigates the observer-based H-infinity control problem for networked control systems （NCSs） with random packet dropouts. A general packet dropout model with multiple independent stochastic variables in the multiple channels case is adopted to describe the data missing in the limited communication channels. With the consideration of the sensor-to-controller and controller-to-actuator packet dropouts at the same time, a new method is pro- posed based on a separation lemma to design an observer-based H-infinity controller, which exponentially stabilizes the closed-loop system in the sense of mean square and also achieves a prescribed H-infinity disturbance attenuation level. A numerical example is given to illustrate the effectiveness of the proposed control method.

关 键 词：Networked control system （NCS） H-infinity control Separation lemma Random packet dropouts LMI 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] O231[自动化与计算机技术—控制科学与工程]