东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (2): 162-165.DOI: 10.12068/j.issn.1005-3026.2014.02.003

• 信息与控制 • 上一篇    下一篇

一种改进的线性网络控制系统的鲁棒稳定性分析

陈新伟1,邬祥宇2,赵军1   

  1. (1.东北大学 流程工业综合自动化国家重点实验室, 辽宁 沈阳110819; 2.大连理工大学 控制科学与工程学院, 辽宁 大连116024)
  • 收稿日期:2013-03-25 修回日期:2013-03-25 出版日期:2014-02-15 发布日期:2013-11-22
  • 通讯作者: 陈新伟
  • 作者简介:陈新伟(1975-),男,辽宁海城人,东北大学博士研究生;赵军(1957-),男,辽宁沈阳人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(61233002,61174073).

An Improved Robust Stability Analysis Technique for Linear Networked Control Systems

CHEN Xinwei1, WU Xiangyu2, ZHAO Jun1   

  1. 1.State Key Laboratory of Synthetical Automation for Process Industries, Northeastern University, Shenyang 110819, China; 2.School of Control Science and Engineering, Dalian University of Technology, Dalian 116024,China.
  • Received:2013-03-25 Revised:2013-03-25 Online:2014-02-15 Published:2013-11-22
  • Contact: CHEN Xinwei
  • About author:-
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摘要: 考虑在网络传输延迟和数据丢包二者共同影响下的具有时变结构不确定性的线性网络控制系统的稳定性问题.首先采用模型变化方法,将网络控制系统模型转换为时滞系统模型;然后,通过引入一种新的考虑网络传输延迟下界的Lyapunov泛函,对具有结构不确定性的时变时滞系统的稳定性进行分析,给出了时滞相关的系统镇定的线性矩阵不等式条件.最后通过数值实例证明本文方法与现有方法相比具有更小的保守性.

关键词: 线性网络控制系统, 稳定性, 结构不确定性, 时变时滞

Abstract: Considered are the stability problem of the uncertain linear networked control systems with transmission delays and packet dropout. The networked control system is transformed into an uncertain linear system with transmission delay. Then,the stability analysis of the timevarying system with delay and uncertain structures is given by using a new Lyapunov function with the lower delay bound, and the LMI conditions are derived related to the delay bound. Finally, numerical examples are given to illustrate the less conservation of this method.

Key words: linear networked control system, stability, structured uncertainty, timevarying delay

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