网络化控制系统观测器/控制器集成设计方法  

Approach to design integrated observer/controller for networked control systems

作　　者：马力伟[1] 田作华[1] 施颂椒[1] 

机构地区：[1]上海交通大学自动化系,上海200240

出　　处：《系统工程与电子技术》2011年第2期395-398,410,共5页Systems Engineering and Electronics

摘　　要：针对一类网络化控制系统,提出一种输出反馈控制的新方法——观测器/控制器集成设计。该方法借助状态观测器重构系统状态,设计输出反馈控制器,将闭环系统建模为一类混杂系统。利用Lyapunov-Krasovskii泛函方法,以线性矩阵不等式(linear matrix inequality,LMI)形式给出了闭环系统的稳定性判据以及观测器/控制器的集成设计方法。仿真算例说明了所提出的方法简单、有效且易于实现。A design scheme for output feedback control is presented for a class of networked control systems（NCSs） based on integrated observer/controller.The state observer is introduced to reconstruct system states,and based on it,a output feedback controller is proposed.The close-loop NCS is formulated as a hybrid system.By exploiting a Lyapunov-Krasovskii functional,the stability criterion of the closed-loop system is established.The solutions of integrated observer/controller are accordingly given in terms of linear matrix inequality（LMI） formulation.Finally,a numerical example is provided to demonstrate that the proposed approach is simple,effective and easy to realize.

关 键 词：反馈控制 网络化控制系统 混杂系统 LYAPUNOV-KRASOVSKII泛函 线性矩阵不等式 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]