基于改进趋近率的滑模变结构数字换向阀位置环控制仿真研究

doi:10.3901/JME.2025.24.311

机械工程学报 ›› 2025, Vol. 61 ›› Issue (24): 311-325.doi: 10.3901/JME.2025.24.311

• 交叉与前沿 • 上一篇

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基于改进趋近率的滑模变结构数字换向阀位置环控制仿真研究

王晓晶^1,2, 张瑜轩^1,2, 张洋³

1. 北京建筑大学城市轨道交通车辆服役性能保障北京市重点实验室北京 100044;
2. 北京建筑大学北京市建筑安全监测工程技术研究中心北京 100044;
3. 哈尔滨理工大学机械动力工程学院哈尔滨 150080

收稿日期:2025-01-24 修回日期:2025-09-15 发布日期:2026-01-26
作者简介:王晓晶(通信作者)，女，1981年出生，博士，教授，博士研究生导师。主要研究方向为流体传动与控制、新型液压元件及装置、电液伺服控制系统及其控制策略、数字液压元件。E-mail：hitwangxiaojing@163.com
基金资助:
国家自然科学基金(52375037);北京建筑大学杰出青年基金(GDRC20220801);北京建筑大学研究生创新基金(PG2023130)资助项目。

Simulation Study of Digital Directional Valve Position Loop Control Based on Improved Convergence Rate of Sliding Mode Variable Structure

WANG Xiaojing^1,2, ZHANG Yuxuan^1,2, ZHANG Yang³

1. Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicle, Beijing University of Civil Engineering and Architecture, Beijing 100044;
2. Beijing Engineering Research Center of Monitoring for Construction Safety, Beijing University of Civil Engineering and Architecture, Beijing 100044;
3. School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080

Received:2025-01-24 Revised:2025-09-15 Published:2026-01-26

摘要/Abstract

摘要： 针对数字换向阀驱动系统对驱动电机参数变化过于敏感，抗负载扰动能力不强，以及传统P控制在高精度位置控制方面的不足，严重影响数字换向阀驱动系统的控制精度和稳定性等问题，提出一种改进趋近率的滑模变结构复合控制策略。为了满足高精度位置控制的需求，在该策略中，利用滑模控制的抗干扰和参数时变性，将滑模控制、预测自适应控制和最优控制相结合，设计数字换向阀的位置环控制器，实现系统的高精度、快速响应。仿真结果和试验结果表明，与传统P控制进行对比分析，所提出的位置环控制策略有效提高了系统的稳定性和精度，以及其改善系统抗干扰能力的有效性。该研究对于提升数字换向阀性能具有重要意义，并为类似系统的控制策略提供了理论指导。

关键词: 数字换向阀, 滑模控制, 最优控制, 滑模面, 趋近率优化

Abstract: Aiming at the problems of the characteristics of the digital directional valve drive system that is too sensitive to the change of the drive motor parameters, not strong in load disturbance resistance, and the insufficiency of the traditional P-control in high-precision position control, which seriously affects the control accuracy and stability of the digital directional valve drive system, the sliding-mode variable-structure composite control strategy with an improved convergence rate is proposed. In order to meet the demand of high-precision position control, in this strategy, the anti-interference and parameter time-variation of sliding mode control are utilized, and the combination of sliding mode control, predictive adaptive control and optimal control is used to design a position-loop controller for the digital directional valve, which realizes the high precision and fast response of the system. Simulation and experimental results show that the proposed position loop control strategy effectively improves the stability and accuracy of the system, as well as its effectiveness in improving the system's anti-interference capability, when analyzed in comparison with the traditional P control. This study is of great significance for improving the performance of digital directional valves and provides theoretical guidance for the control strategies of similar systems.

Key words: digital directional valves, sliding mode control, optimal control, sliding mode surface, convergence rate optimization

中图分类号:

TH137

王晓晶, 张瑜轩, 张洋. 基于改进趋近率的滑模变结构数字换向阀位置环控制仿真研究[J]. 机械工程学报, 2025, 61(24): 311-325.

WANG Xiaojing, ZHANG Yuxuan, ZHANG Yang. Simulation Study of Digital Directional Valve Position Loop Control Based on Improved Convergence Rate of Sliding Mode Variable Structure[J]. Journal of Mechanical Engineering, 2025, 61(24): 311-325.

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基于改进趋近率的滑模变结构数字换向阀位置环控制仿真研究

Simulation Study of Digital Directional Valve Position Loop Control Based on Improved Convergence Rate of Sliding Mode Variable Structure

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