基于估计的无线网络化控制系统逼近控制策略

doi:10.52396/JUST-2020-1156

中国科学技术大学学报 ›› 2021, Vol. 51 ›› Issue (4): 327-334.DOI: 10.52396/JUST-2020-1156

基于估计的无线网络化控制系统逼近控制策略

梁启鹏¹, 朱巧慧¹, 康宇², 赵云波^2*

1.浙江工业大学信息工程学院,浙江杭州 310012;
2.中国科学技术大学自动化系,安徽合肥 230027

收稿日期:2020-12-21 修回日期:2021-02-06 出版日期:2021-04-30 发布日期:2021-11-24
通讯作者: * E-mail:ybzhao@ustc.edu.cn

Estimation based approximating control for wireless networked control systems

Liang Qipeng¹, Zhu Qiaohui¹, Kang Yu², Zhao YunBo^2*

1. College of InformationEngineering, ZhejiangUniversity of Technology,Hangzhou 310012, China;
2. Department of Automation, University of Science and Technology of China, Hefei 230027, China

Received:2020-12-21 Revised:2021-02-06 Online:2021-04-30 Published:2021-11-24
Contact: * E-mail: ybzhao@ustc.edu.cn

摘要/Abstract

摘要： 通过对闭环延时特性未知的无线网络化控制系统进行控制策略设计和系统分析,提出了一种基于估计的逼近控制策略,在保证系统稳定性的同时以一种实际可行的方式利用了延时特性.该策略首先利用延时特性估计器在线测量延时得到闭环延时特性估计,然后逼近控制器使用此估计得到控制量.在此基础上,设计了延时抖动检测器,使控制策略自适应延时特性抖动.在设计的控制策略下,得到了保证闭环系统均方最终一致有界的充分条件和控制增益计算方法.通过数值仿真验证了控制策略的有效性.

关键词: 无线网络化控制系统, 延时特性估计, 马尔可夫跳变系统, 逼近控制

Abstract: The control design and system analysis of wireless networked control systems with unknown round-trip delay characteristics are investigated. An estimation based approximating control strategy is proposed to stabilize the systems by using delay characteristics in a practically feasible way. The strategy first uses a delay transition probability estimator to obtain the delay characteristics estimation by measuring delay data online, and then uses an approximating controller to take advantage of the estimation. On this basis, a packet delay variation detector is designed, making the strategy adaptive to the variation of delay characteristics. The sufficient conditions to ensure the closed-loop system being mean-square uniformly ultimately bounded are given, with also the controller gain design method. The effectiveness of the proposed approach is verified numerically.

Key words: wireless network control systems, delay characteristics estimation, Markov jump system, approximating controller

中图分类号:

TP391.8

梁启鹏, 朱巧慧, 康宇, 赵云波. 基于估计的无线网络化控制系统逼近控制策略[J]. 中国科学技术大学学报, 2021, 51(4): 327-334.

LIANG Qipeng, ZHU Qiaohui, KANG Yu, ZHAO YunBo. Estimation based approximating control for wireless networked control systems[J]. Journal of University of Science and Technology of China, 2021, 51(4): 327-334.

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基于估计的无线网络化控制系统逼近控制策略

Estimation based approximating control for wireless networked control systems

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