An energy-saving nonlinear position control strategy for electro-hydraulic servo systems

被引：53

作者：

Baghestan, Keivan ^{[1
]}

Rezaei, Seyed Mehdi ^{[1
]}

Talebi, Heidar Ali ^{[2
]}

Zareinejad, Mohammad ^{[3
]}

机构：

[1] Amirkabir Univ Technol, Dept Mech Engn, Tehran, Iran

[2] Amirkabir Univ Technol, Dept Elect Engn, Tehran, Iran

[3] Amirkabir Univ Technol, New Technol Res Ctr, Tehran, Iran

来源：

ISA TRANSACTIONS | 2015年 / 59卷

基金：

美国国家科学基金会;

关键词：

Electro-hydraulic systems; Energy saving; Position control; MOTION CONTROL;

D O I：

10.1016/j.isatra.2015.10.012

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The electro-hydraulic servo system (EHSS) demonstrates numerous advantages in size and performance compared to other actuation methods. Oftentimes, its utilization in industrial and machinery settings is limited by its inferior efficiency. In this paper, a nonlinear backstepping control algorithm with an energy-saving approach is proposed for position control in the EHSS. To achieve improved efficiency, two control valves including a proportional directional valve (PDV) and a proportional relief valve (PRV) are used to achieve the control objectives. To design the control algorithm, the state space model equations of the system are transformed to their normal form and the control law through the PDV is designed using a backstepping approach for position tracking. Then, another nonlinear set of laws is derived to achieve energy-saving through the PRV input. This control design method, based on the normal form representation, imposes internal dynamics on the closed-loop system. The stability of the internal dynamics is analyzed in special cases of operation. Experimental results verify that both tracking and energy-saving objectives are satisfied for the closed-loop system. (C) 2015 ISA. Published by Elsevier Ltd. All rights reserved.

引用

页码：268 / 279

页数：12

共 21 条

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