Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (18): 211-214.DOI: 10.3778/j.issn.1002-8331.2010.18.066

• 工程与应用 • Previous Articles     Next Articles

Robust H control of network control system with random time-delay

ZHANG Qian,GUO Xi-jin   

  1. School of Information and Electrical Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221008,China
  • Received:2008-12-16 Revised:2009-05-07 Online:2010-06-21 Published:2010-06-21
  • Contact: ZHANG Qian


张 倩,郭西进   

  1. 中国矿业大学 信息与电气工程学院,江苏 徐州 221008
  • 通讯作者: 张 倩

Abstract: 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.

Key words: Network Control System(NCS), random time-delay, H control, dynamic output feedback

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。

关键词: 网络控制系统, 不确定时延, H控制, 动态输出反馈

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