Disturbance Rejection Control for Single-Rod Electro-Hydraulic Servo System Based on Dual-Extended-State-Observer

被引:0
|
作者
Liu, Tengfei [1 ]
Yao, Jianyong [1 ]
Liu, Xiangxin [2 ]
Li, Lan [2 ]
机构
[1] Nanjing Univ Sci & Technol, Dept Mech Engn, Nanjing, Jiangsu, Peoples R China
[2] Beijing Inst Space Launch Technol, Beijing, Peoples R China
基金
中国国家自然科学基金;
关键词
single-rod electro-hydraulic servo system; robust control; backstepping; extended state observer; SLIDING MODE CONTROL; BACKSTEPPING CONTROL; HYDRAULIC ACTUATORS; ROBUST-CONTROL; TRACKING; PARAMETERS;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Uncertainties including matched and unmatched disturbances are the obstacles of developing advanced controllers for electro-hydraulic servo systems. This article presents a dual extended state observer (ESO) with full state to estimate the matched and unmatched disturbances and a robust controller to compensate them. Firstly, the nonlinear mathematical model of the considered single-rod hydraulic system is built. Then, the proposed controller is synthesized based on the backstepping design procedure. The closed-loop system stability analysis indicates that the proposed robust controller achieves guaranteed transient and steady-state tracking performance. Comparative simulation results are obtained to verify the effectiveness of the proposed control strategy.
引用
收藏
页码:3032 / 3037
页数:6
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