Coordinating optimization-based sliding mode variable structure control for electro-hydraulic servo system

被引：1

作者：

Yong Yang

An Luo

Hua Han

机构：

[1] Central South University,College of Information Science and Engineering

[2] Changsha University of Science and Technology,College of Electric and Information Engineering

[3] Hunan University,undefined

来源：

Journal of Control Theory and Applications | 2006年 / 4卷 / 2期

关键词：

Sliding mode variable structure control(SMVSC); Varying boundary layer; Chattering reduction; Steadystate performance; Coordinating optimization(CO); Electro-hydraulic servo system (EHSS);

D O I：

10.1007/s11768-006-5164-6

中图分类号：

学科分类号：

摘要：

A sliding mode variable structure control (SMVSC) based on a coordinating optimization algorithm has been developed. Steady state error and control switching frequency are used to constitute the system performance indexes in the coordinating optimization, while the tuning rate of boundary layer width (BLW) is employed as the optimization parameter. Based on the mathematical relationship between the BLW and steady-state error, an optimized BLW tuning rate is added to the nonlinear control term of SMVSC. Simulation experiment results applied to the positioning control of an electro-hydraulic servo system show the comprehensive superiority in dynamical and static state performance by using the proposed controller is better than that by using SMVSC without optimized BLW tuning rate. This succeeds in coordinately considering both chattering reduction and high-precision control realization in SMVSC.

引用

页码：168 / 174

页数：6

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