不确定网络控制系统具有H_∞性能界的鲁棒控制  

Robust Control with H_∞ Performance Bound for Networked Control Systems with Data Packet Dropouts

作　　者：黄剑[1] 关治洪[1] 王仲东[1] 

机构地区：[1]华中科技大学控制科学与工程系,武汉430074

出　　处：《控制与决策》2005年第9期1002-1005,1011,共5页Control and Decision

基　　金：国家自然科学基金项目(60274004)

摘　　要：针对闭环网络控制系统,在考虑网络数据传输可能发生丢包的情况下,提出了一类不确定切换系统模型.为了量化网络数据丢失的影响,根据网络特点给出了网络传输数据丢包率的数学定义,进一步研究了此类切换系统在某种程度的数据丢包率影响下具有一定H∞性能界的鲁棒状态反馈控制问题.应用H∞鲁棒控制理论及线性矩阵不等式技术得到了全状态反馈控制器的设计方法,以一组线性矩阵不等式表示其主要结果.最后给出了一个具体的数值示例.Networked control systems with data packet dropouts are described by an uncertain switched system model. According to characteristics of data networks a networked data packet dropouts ratio is defined to quantify the degree of data losses caused by networked transmissions. Moreover, the robust control problem with H∞ performance bound is studied for these networked control systems. By applying H∞ control theories and the LMI technique, the design method of the full state feedback control law is obtained. The main results are given in terms of linear matrix inequalities. A numerical example is presented to demonstrate the results.

关 键 词：网络控制系统 切换系统 鲁棒控制 H∞性能 线性矩阵不等式 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]