变采样网络控制系统的最优保性能控制  

Optimal cost control for variable-sampling networked control system

作　　者：薛燕[1] 刘克[1] 

机构地区：[1]北京科技大学信息工程学院,北京100083

出　　处：《计算机工程与设计》2009年第2期294-297,共4页Computer Engineering and Design

基　　金：北京市教育委员会重点学科共建基金项目(100080537)

摘　　要：研究了一类不确定时延网络控制系统的最优保性能控制问题。针对线性时不变控制对象,控制器和控制对象采用时间-事件驱动,系统成为变采样网络控制系统,考虑在不确定时延小于或者等于一个变采样周期时,基于动态输出反馈对变采样网络控制系统进行建模,利用线性矩阵不等式研究了系统的保性能控制,并设计了保性能控制率和最优保性能控制率,最后给出实例表明在最优保性能控制率的控制下系统稳定。The optimal cost control problem for a class of networked control system with uncertain time-delay is studied. For linear time-invariant normal controlled plant, under the assumption that controller and actuator adopt the method of event-time driven, the system is a variable-sampling networked control system, supposing that time-delay is less than or equals to a variable-sampling period. Using the dynamic output feedback the variable-sampling networked control system is modeled. Making used of the linear matrix inequality description, the cost control of the system is studied, and the design method of robust control law and the optimal cost control of the system are presented respectively. Finally, an example is given to illustrate the analysis results.

关 键 词：网络控制系统 变采样 时间-事件驱动 最优保性能控制 线性矩阵不等式 动态输出反馈 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]