Estimation based approximating control for wireless networked control systems

doi:10.52396/JUST-2020-1156

Journal of University of Science and Technology of China ›› 2021, Vol. 51 ›› Issue (4): 327-334.DOI: 10.52396/JUST-2020-1156

• Information Science • Previous Articles Next Articles

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

Abstract

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

CLC Number:

TP391.8

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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Estimation based approximating control for wireless networked control systems

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