Research on position synchronization control strategy of double hydraulic cylinders based on cross-coupling

IF 1.8 4区工程技术 Q3 ENGINEERING, MECHANICAL

Journal of The Brazilian Society of Mechanical Sciences and Engineering Pub Date : 2024-08-13 DOI:10.1007/s40430-024-05085-5

Bingwei Gao, Wei Zhang, Lintao Zheng, Hongjian Zhao

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Abstract

The nonlinear factors, the external interference, and the coupling between the two hydraulic cylinders in the electro-hydraulic position servo system seriously affect the synchronous control accuracy. In this paper, based on the establishment of the state space equation of double hydraulic cylinders, the cross-coupling control structure was adopted, and the synchronous controller based on dynamic soft variable structure control was designed. The synchronous controller based on sliding mode control was used as a comparison for co-simulation and experimental analysis. The results showed that under the control of two synchronization controllers, the controlled dual cylinders could track the given positioning signal in a short time, and the synchronization error was always within the specified range. The synchronization controller based on dynamic soft variable structure control could shift smoothly without significant impact when the given positioning signal suddenly changes, avoiding the chattering problem in the sliding mode control.

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基于交叉耦合的双液压缸位置同步控制策略研究

电液位置伺服系统中的非线性因素、外部干扰以及双液压缸之间的耦合严重影响了同步控制精度。本文在建立双液压缸状态空间方程的基础上，采用交叉耦合控制结构，设计了基于动态软变量结构控制的同步控制器。以基于滑模控制的同步控制器为对比，进行了协同仿真和实验分析。结果表明，在两个同步控制器的控制下，受控双缸能在短时间内跟踪给定的定位信号，且同步误差始终在规定范围内。基于动态软变量结构控制的同步控制器能在给定定位信号突然变化时平滑移位，不会产生明显影响，避免了滑模控制中的颤振问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of The Brazilian Society of Mechanical Sciences and Engineering 工程技术-工程：机械

CiteScore

3.60

自引率

13.60%

发文量

536

审稿时长

4.8 months

期刊介绍： The Journal of the Brazilian Society of Mechanical Sciences and Engineering publishes manuscripts on research, development and design related to science and technology in Mechanical Engineering. It is an interdisciplinary journal with interfaces to other branches of Engineering, as well as with Physics and Applied Mathematics. The Journal accepts manuscripts in four different formats: Full Length Articles, Review Articles, Book Reviews and Letters to the Editor. Interfaces with other branches of engineering, along with physics, applied mathematics and more Presents manuscripts on research, development and design related to science and technology in mechanical engineering.