网络控制系统的有界输入保性能控制及仿真  

Guaranteed Cost Control and the Simulation of Bounded-input for Networked Control Systems

作　　者：吴忠强[1] 吴云双[1] 陈金钉 王志君[1] 

机构地区：[1]燕山大学电气工程学院,河北省秦皇岛市066004

出　　处：《中国电机工程学报》2007年第9期104-109,共6页Proceedings of the CSEE

基　　金：国家留学基金项目(2004813033)

摘　　要：针对网络控制系统中存在的数据传输时延,以及由被控对象和控制器之间的不同步给系统所带来的稳定性问题,提出了鲁棒保性能控制器设计方案。将网络系统中的时延的不确定,转化为系统状态方程参数矩阵的不确定;根据实际系统中对控制器输出信号的幅值约束的要求,设计了状态反馈控制律,对导出的闭环网络控制系统应用Lyapunov稳定性理论进行稳定性分析,给出了使系统稳定的充分条件;通过求解线性矩阵不等式得到反馈增益矩阵和系统性能指标上界值。将鲁棒保性能控制器设计方案应用于直流电机系统中,仿真结果验证了所提方案的正确性。与补偿策略的比较,进一步说明了所提控制策略的有效性。A design procedure was presented for guaranteed cost control for stability considering the communication delay and asynchronism between the plant and controller in networked control systems. First, the uncertainty of time delays are converted to the uncertainty of the parameter matrices, then the state feedback control law is designed under the consideration of the requirement of bounded-control signals, and the sufficient conditions are gained for stability of the closed-loop system using Lyapunov stability theory. Furthermore, the feedback gain and performance measure are obtained through resolving the LMIs. Finally, the simulated application in DC motor system shows the validity of the proposed method and compared with the compensation method, the effectiveness of the proposed method is verified.

关 键 词：网络化控制系统 保性能控制 时延 有界输入 鲁棒控制 线性矩阵不等式 直流电机 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TM33[自动化与计算机技术—控制科学与工程]