中国机械工程2025，Vol.36Issue(5)：954-962,973,10.DOI:10.3969/j.issn.1004-132X.2025.05.007
基于自抗扰控制算法的负载敏感多路阀阀口压差精准调控
Precise Regulation of Differential Pressures at Port of Load-sensitive Multi-way Valves Based on ADRC Algorithm
摘要
Abstract
Load-sensitive multi-way valve was the core component for the hydraulic system of con-struction machinery,the pressure compensator was used to keep the differential pressure of the valve ports constant,but the differential pressure was susceptible to the spool opening and load changes,resulting in low accuracy of the main valve flow rate control.Therefore,a new type of load-sensitive multi-way valve differential pressure continuous control method was proposed,a proportional solenoid was used to push the spools of the compensator valves,and ADRC algorithm was used to control the proportional solenoid thrusts and realize the closed-loop control of differential pressures of the main valves,so as to accurately control the flow rate.Firstly,the working principle of the system was intro-duced and a mathematical model was established,then a simulation model was established based on AMESim-MATLAB joint simulation platform,and a test bench was built for experimental validation,the characteristics of the valve differential pressure maintenance and the main valve flow rate regula-tion were analyzed under the conditions of load changes and main valve opening degree changes.The results show that compared with the load changes,the changes of the main valve opening degree have a greater impact on the differential pressures.A new type of valve port differential pressure control structure and method may accurately control the load-sensitive multi-way valve differential pressures,so as to achieve the effectiveness of precise control of the flow rate,and may actively regulate the dif-ferential pressures without changing the main valve opening degree,so as to achieve the flow rate for the further regulation.关键词
负载敏感多路阀/压差补偿/流量调控/自抗扰控制(ADRC)算法Key words
load-sensitive multi-way valve/differential pressure compensation/flow rate regula-tion/active disturbance rejection control(ADRC)algorithm分类
机械工程引用本文复制引用
类兴茂,丁海港,王思民,杨程程,庞智珍..基于自抗扰控制算法的负载敏感多路阀阀口压差精准调控[J].中国机械工程,2025,36(5):954-962,973,10.基金项目
国家自然科学基金(52075534) （52075534）
江苏省自然科学基金(BK20221544) （BK20221544）
