《计算机应用》唯一官方网站 ›› 2023, Vol. 43 ›› Issue (2): 615-621.DOI: 10.11772/j.issn.1001-9081.2022010007

• 多媒体计算与计算机仿真 • 上一篇    

事件触发下的网络化系统非脆弱耗散控制方案

葛超1(), 张亚欣1, 刘月2, 王红2   

  1. 1.华北理工大学 人工智能学院,河北 唐山 063210
    2.华北理工大学 电气工程学院,河北 唐山 063210
  • 收稿日期:2022-01-06 修回日期:2022-03-22 接受日期:2022-04-06 发布日期:2022-04-21 出版日期:2023-02-10
  • 通讯作者: 葛超
  • 作者简介:张亚欣(1998—),女,河北邢台人,硕士研究生,主要研究方向:网络化控制系统
    刘月(1997—),女,河北唐山人,硕士研究生,主要研究方向:网络化控制系统
    王红(1980—),女,河北唐山人,讲师,硕士,主要研究方向:网络化控制系统。
  • 基金资助:
    河北省自然科学基金资助项目(F2021209006)

Non-fragile dissipative control scheme for event-triggered networked systems

Chao GE1(), Yaxin ZHANG1, Yue LIU2, Hong WANG2   

  1. 1.College of Artificial Intelligence,North China University of Science and Technology,Tangshan Hebei 063210,China
    2.College of Electrical Engineering,North China University of Science and Technology,Tangshan Hebei 063210,China
  • Received:2022-01-06 Revised:2022-03-22 Accepted:2022-04-06 Online:2022-04-21 Published:2023-02-10
  • Contact: Chao GE
  • About author:ZHANG Yaxin, born in 1998, M. S. candidate. Her research interests include networked control systems.
    LIU Yue, born in 1997, M. S. candidate. Her research interests include networked control systems.
    WANG Hong, born in 1980, M. S., lecturer. Her research interests include networked control systems.
  • Supported by:
    Natural Science Foundation of Hebei Province(F2021209006)

摘要:

针对带宽资源有限、存在系统外部干扰以及参数不确定性的问题,提出了一种基于事件触发的网络化系统非脆弱耗散控制方案。首先,在网络化控制系统(NCS)模型的基础上,提出了一种非周期采样的事件触发方案,并建立一个时滞闭环系统模型;然后,利用锯齿波的结构特点构造新型双边李雅普诺夫泛函;最后,结合杰森不等式、自由权矩阵、凸组合等方法,导出保证系统稳定性的充分条件,并计算出反馈控制器的增益。数值仿真结果证明,所设计的双边泛函比用单边泛函具有更小的保守性,事件触发机制与普通采样机制相比能够节约带宽,且所设计出的控制器具有可行性。

关键词: 事件触发机制, 网络化控制系统, 非脆弱性, 耗散性能, 双边泛函

Abstract:

For the problems of limited bandwidth resources, the existence of external disturbance and parameter uncertainty, a non-fragile dissipative control scheme for event-triggered networked systems was proposed. Firstly, based on the Networked Control System (NCS) model, a non-periodic sampling event-triggered scheme was proposed, and a delay closed-loop system model was established. Then, a novel bilateral Lyapunov functional was constructed by using the structure characteristics of sawtooth wave. Finally, the sufficient conditions to ensure the stability of the system were derived by using methods such as Jensen inequality, free weight matrix and convex combination, and the gain of the feedback controller was calculated. The results of numerical simulation show that the proposed bilateral functional is less conservative than the unilateral functional, the event-triggered mechanism can save bandwidth compared with the common sampling mechanism, and the proposed controller is feasible.

Key words: event-triggered mechanism, Networked Control System (NCS), non-fragility, dissipative performance, two-sided functional

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