摘要
研究了存在不确定时延的网络控制系统的鲁棒H∞控制器设计方法。首先讨论了系统的建模问题,针对传感器采用时间驱动,控制器和执行器采用事件驱动,考虑不确定时延小于一个采样周期的情况,网络控制系统可建模为一类具有不确定性的线性离散时延系统,利用Lyapunov方法和线性矩阵不等式方法,推导出闭环控制系统渐近稳定且H∞范数小于性能指标γ的充分条件,并给出动态输出反馈H∞控制律设计方法。通过Matlab数值仿真,证明了该设计方法的有效性。
The design approach of robust H∞ controller for Network Control System（NCS） with random time-delay is studied in this paper.The model problem is discussed firstly.With time-driven sensor and event-driven controller and actuator,supposing that the time-delay is less than one sampling period,the NCS is modeled as an uncertain discrete linear system with delay,based on the Lyapunov functional approach and Linear Matrix Inequality（LMI） formulation;sufficient condition of asymptotic stability and H∞ norm less than performance index γ is derived.And H∞ control law design methods for dynamical output feedback are presented. A numerical simulation example with Matlab shows that the design method is effective.
出处
《计算机工程与应用》
CSCD
北大核心
2010年第18期211-214,219,共5页
Computer Engineering and Applications
基金
国家自然科学基金No.60304016~~
关键词
网络控制系统
不确定时延
H∞控制
动态输出反馈
Network Control System（NCS）
random time-delay
H∞ control
dynamic output feedback
