Reference model based disturbance observer control system

被引：0

作者：

Zhou T. ^{[1
]}

Wu X.-L. ^{[1
]}

机构：

[1] College of Physics and Electronics Information, Luoyang Normal University, Luoyang

来源：

Kongzhi Lilun Yu Yingyong/Control Theory and Applications | 2021年 / 38卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Disturbance observer; Linear active disturbance rejection control; Reference model; Stability; Tracking accuracy;

D O I：

10.7641/CTA.2020.90697

中图分类号：

学科分类号：

摘要：

A reference model based disturbance observer control system is presented in this paper in order to compensate unknown dynamics and external disturbances of the control system. First, the second-order ideal reference model control system is designed, and the stability of the reference model control system is proved via the closed-loop transfer function. Then, the disturbance observer and reference model based disturbance observer control law of the second-order system are designed, and the convergence of the second-order closed-loop control error system is analysed. Third, the novel control method is extended to a general n-th order control system, and the stability of the n-th order closed-loop control error system is proved. Finally, the results of simulation tests show that the step response tracking accuracy and rejecting disturbances performance of the reference model based disturbance observer control system are much better than those of the linear active disturbance rejection control (LADRC) system with higher disturbance estimation precision and smaller control input values. The sine tracking accuracy and disturbance estimation precision of the reference model based disturbance observer control system are still higher than those of the LADRC system. The novel control system has the simpler structure, better disturbance rejection and higher control efficiency. It has important engineering application values. © 2021, Editorial Department of Control Theory & Applications South China University of Technology. All right reserved.

引用

页码：823 / 832

页数：9

共 18 条

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