阀口独立控制系统主动阻尼补偿全域性能优化  

Global performance optimization of active damping compensation for independent metering control system

作　　者：程敏 侯严迪 王馨莹 丁孺琦 李冬明 CHENG Min;HOU Yandi;WANG Xinying;DING Ruqi;LI Dongming(State Key Laboratory of Mechanical Transmission for Advanced Equipments,Chongqing University,Chongqing 400044,China;Key Laboratory of Vehicles and Equipment,East China Jiaotong University,Nanchang 330013,China;Jiangsu Hengli Hydraulic Technology Co.Ltd.,Changzhou 213164,Jiangsu China)

机构地区：[1]重庆大学高端装备机械传动全国重点实验室,重庆400044 [2]华东交通大学载运工具与装备教育部重点实验室,江西南昌330013 [3]江苏恒立液压股份有限公司,江苏常州213164

出　　处：《华中科技大学学报（自然科学版）》2024年第3期84-90,96,共8页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重点研发计划资助项目(2020YFB2009702);国家自然科学基金资助项目(52075055);工信部战略基础产品项目(TC220H064)。

摘　　要：针对阀口独立控制节能系统阻尼降低与执行器振荡的问题,建立了入口阀电子压力补偿的阀口独立控制系统数学模型,设计了基于动态压力反馈的阀口独立控制系统主动阻尼补偿策略.针对挖掘机等工程机械负载大范围变化的作业工况,分析了不同负载下阀口独立控制系统阻尼补偿特性,提出了一种全域负载工况下阻尼补偿性能评估指标和补偿增益优化方法,开发了基于Matlab/GUIDE平台的阀口独立控制系统阻尼补偿参数自整定软件.20 t挖掘机阀口独立控制系统实验结果表明:采用所提出的方法能够优选阻尼补偿增益参数,在不同工况下执行器速度运行平稳且压力振荡降低47.9%~71.58%,从而改善系统动态特性.For the problem of damping reduction and actuator oscillation in the independent metering control system,a mathematical model of the independent metering control system with electronic pressure compensation of the inlet valve is established,and an active damping compensation strategy of the independent metering control system based on dynamic pressure feedback is designed.For the operating conditions of excavators and other construction machinery with the wide range of load changes,the damping compensation characteristics of the independent metering control system under different loads are analyzed,a damping compensation performance evaluation index and compensation gain optimization method under the global performance conditions are proposed.A Matlab/GUIDE platform-based damping compensation parameter self-tuning software for the independent metering control system is developed.The experimental results of the independent metering control system for a 20 t excavator show that the proposed method can optimize the damping compensation gain parameter,and the actuator speed runs smoothly and the pressure oscillation is reduced by 47.9%to 71.58%under different working conditions,which improves the dynamic characteristics of the system.

关 键 词：阀口独立 压力反馈 阻尼补偿 全域性能评估 参数自整定 

分 类 号：TH137[机械工程—机械制造及自动化]