Event-triggered Control for Hydraulic Position Tracking System with Extended State Observer

被引：0

作者：

Shen W. ^{[1
]}

Yuan X. ^{[1
]}

Liu M. ^{[2
]}

机构：

[1] School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai

[2] School of Astronautics, Harbin Institute of Technology, Harbin

来源：

Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2022年 / 58卷 / 08期

关键词：

Event-triggered strategy; Extended state observer; Hydraulic servo system; Network control technology; Position tracking control;

D O I：

10.3901/JME.2022.08.274

中图分类号：

学科分类号：

摘要：

The hydraulic control system based on network control technology has the advantages of remote control, modularization and resource sharing. However, the hydraulic control system itself has the characteristics of strong nonlinearity and parameter uncertainty, and the network control system has problems such as limited communication bandwidth, which lead to poor control performance and limit the application. An adaptive robust control strategy with an event-triggered mechanism and an extended state observer(ESO) is proposed to deal with the above problems. By introducing an event-triggered strategy to filter a large amount of redundant data, the utilization of communication bandwidth is improved. An extended state observer is designed based on the model to simultaneously estimate the velocity value and the disturbance outside the mismatch. The uncertain parameters of the hydraulic control system are estimated online through an adaptive algorithm. The global stability of the closed-loop system is analyzed by the Lyapunov stability theory. Experimental results indicate that the designed algorithm has good position tracking control performance while reducing a large amount of data transmission. © 2022 Journal of Mechanical Engineering.

引用

页码：274 / 284

页数：10

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