东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (4): 457-460.DOI: 10.12068/j.issn.1005-3026.2014.04.001

• 信息与控制 •    下一篇

基于观测器的时延网络控制系统稳定性

邢伟1，孙阳1，戴良萃2   

  1. (1 东北大学 理学院， 辽宁 沈阳110819； 2 红塔辽宁烟草有限公司， 辽宁 沈阳110001)
  • 收稿日期:2013-06-29 修回日期:2013-06-29 出版日期:2014-04-15 发布日期:2013-11-22
  • 通讯作者: 邢伟
  • 作者简介:邢伟(1961-)，男，辽宁沈阳人，东北大学教授.
  • 基金资助:
    国家自然科学基金资助项目(60974004).

ObserverBased Stability of Networked Control Systems with TimeDelay

XING Wei1， SUN Yang1， DAI Liangcui2   

  1. 1. School of Sciences， Northeastern University， Shenyang 110819， China; 2. Hongta Liaoning Tobacco Co.Ltd.， Shenyang 110001， China.
  • Received:2013-06-29 Revised:2013-06-29 Online:2014-04-15 Published:2013-11-22
  • Contact: SUN Yang
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摘要： 针对一类传感器采用时间驱动，控制器和执行器采用事件驱动的确定短时延网络控制系统，设计了一个状态观测器.将该网络控制系统离散化，并在此观测器的基础上给出了系统的离散模型和判定渐近稳定的方法.通过建立一个Lyapunov函数并采用线性矩阵不等式(LMI)的方法获得系统渐近稳定的充分条件.仿真实例验证了该方法的可行性及有效性.

关键词: 网络控制系统, 短时延, Lyapunov函数, 线性矩阵不等式(LMI), 观测器

Abstract: A state observer was designed for a class of networked control systems with a short delay， in which the sensor is timedriven， and the controller and actuator are eventdriven. The networked control systems were discretized， and a discrete model of the system was given. In addition， the determination method of asymptotic stability was given on the basis of the state observer. Sufficient conditions for the system asymptotically stable were obtained by building Lyapunov function and linear matrix inequalities. A simulation example showed the feasibility and effectiveness of the proposed method.

Key words: NCS(networked control systems), short delay, Lyapunov function, linear matrix inequality (LMI), observer

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