长时延网络控制系统的H2／H∞混合控制  

Mixed H_2/H_∞ control of networked control systems with long time-delay

作　　者：王庆凤[1] 陈虹[1] 

机构地区：[1]吉林大学通信工程学院

出　　处：《吉林大学学报（工学版）》2008年第5期1191-1196,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：教育部新世纪优秀人才支持计划

摘　　要：提出了具有长时延的网络控制系统的一种新模型,利用信息接收缓冲区将不确定的长时延转变成在几个确定时延间进行转换,从而将延迟扩大化的程度减小。根据离散马尔可夫跳跃线性系统理论,提出了网络控制系统的H2/H∞混合控制问题,得到通过求解线性矩阵不等式来获得鲁棒均方稳定的跳跃反馈控制器的设计方法,设计出的控制器计算简单且易实现。将结论应用到三容系统中,仿真结果表明了此方法的有效性和优越性。A new model of the NCSs with long time-delay was proposed using buffering method, the uncertain long time delay can be converted to switch in some certain time delays, thus decrease the delay increasement. According to the theory of discrete-time Markov jump linear system, mixed H2/H∞ control problem for networked control systems （NCSs） with long time-delay was proposed and the robust mean square stable controller can be obtained based on LMI approach. The designed robust controller by using this proposed method proved to be simple and easy to realize. These results were applied to a three-tank system and the simulations demonstrate the effectiveness and superiority of the method.

关 键 词：自动控制技术 网络控制系统 H2/H∞混合控制 传输时延 马尔可夫跳跃线性系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]