网络化控制系统观测器/控制器集成设计方法

摘要

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 (IMI) formulation. Finally, a numerical example is provided to demonstrate that the proposed approach is simple,effective and easy to realize.%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-Kra-sovskii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.