计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (20): 13-15.DOI: 10.3778/j.issn.1002-8331.2009.20.004

• 博士论坛 • 上一篇    下一篇

时滞系统方法的网络控制系统的研究

戴建国   

  1. 江南大学 通信与控制工程学院,江苏 无锡 214122
  • 收稿日期:2009-01-09 修回日期:2009-03-10 出版日期:2009-07-11 发布日期:2009-07-11
  • 通讯作者: 戴建国

Delay system approach to research of networked control systems

DAI Jian-guo

  

  1. College of Communication and Control Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China
  • Received:2009-01-09 Revised:2009-03-10 Online:2009-07-11 Published:2009-07-11
  • Contact: DAI Jian-guo

摘要: 针对普遍存在的采样器和零阶保持器异步这一现象,研究了该类网络控制系统的状态反馈控制问题。首先,以事件驱动的零阶保持器的更新时刻为时间标识,并考虑到网络的诱导时延和数据丢包,建立网络控制系统的采样闭环模型,并转化为状态中连缀着两个时滞变量的时滞系统。然后,利用相应的时滞系统方法,对闭环网络控制系统进行了稳定性分析和控制器综合。最后,通过仿真实例验证了所得结果的正确性。

关键词: 网络控制系统, 时滞系统, 采样系统, 事件驱动, 线性矩阵不等式

Abstract: This paper deals with the problem of state-feedback control for Networked Control Systems(NCSs) with asynchronous occurrence of the sampler and the Zero-Order Holder(ZOH).Firstly,based on the updating instants of the event-driven ZOH,the sampled-data NCSs with consideration of both the network-induced delay and data packet dropout are formulated,from which a time-delay system with two additive delay components is developed.Subsequently,by making use of the delay system approach,the stability analysis and controller synthesis are solved for the closed-loop NCSs accordingly.Finally,an illustrative example is provided to show the availability of the proposed method.

Key words: Networked Control Systems(NCSs), time-delay systems, sampled-data systems, event driven, Linear Matrix Inequality(LMI)