中型挖掘机泵控系统与阀控系统的能效对比  

Comparison of Energy Efficiency Between Pump-controlled System and Valve-controlled System on a Medium Excavator

作　　者：国钰 张树忠 王亚兵 许弘焜 王博瑞 GUO Yu;ZHANG Shuzhong;WANG Yabing;XU Hongkun;WANG Borui(Fujian Key Laboratory of Intelligent Machining Technology and Equipment,Fujian University of Technology,Fuzhou,Fujian 350108)

机构地区：[1]福建理工大学福建省智能加工技术及装备重点实验室,福建福州350108

出　　处：《液压与气动》2024年第7期129-134,共6页Chinese Hydraulics & Pneumatics

基　　金：福建省自然科学基金(2021J011051);2022年省级科技创新重点项目资助(2022G02007);先进运动控制福建省高校重点实验室年度开放基金(MU-AMC202302);福建理工大学海洋研究专项基金(GY-Z23087)。

摘　　要：为降低传统液压挖掘机动力系统的能量消耗,提出一种单定量泵控缸的分布式直驱液压系统,开展中型挖掘机泵控系统与阀控系统的能效对比。首先,对双泵双回路阀控液压系统和分布式泵控液压系统的原理进行分析;随后,在MATLAB/Simulink中建立机械多体动力学模型、泵控液压系统模型和速度前馈PID位置反馈控制器;根据GB/T 36695—2018中的典型挖掘机循环,分别进行阀控系统实验和泵控系统仿真;最后将实验结果和仿真结果进行对比分析。结果表明:在同一工况下,两者的工作装置能耗基本相当(泵控系统比阀控系统高8.5%),但泵控系统效率(62.1%)是阀控系统效率(23.5%)的2.6倍,泵控系统总能耗降低了62.4%。In order to reduce the energy consumption of conventional hydraulic excavator,a distributed direct-drive hydraulic system with a single variable pump-controlled cylinder is proposed.Taking a medium hydraulic excavator as a test case,pump-controlled technology is adopted to replace the dual-pump dual-circuit valve-controlled technology.Firstly,the principles of the valve-controlled system and the proposed pump-controlled system are analyzed.Subsequently,mechanical models,hydraulic system models,and a speed feedback PID position feedback controller are established and combined in MATLAB/Simulink.Experimental tests for the valve-controlled system and simulations for the pump-controlled system are conducted under the same excavation cycle conditions.The results indicate that under aidentical operating condition,the energy consumption of the working apparatus in the two systems is fundamentally similar(pump-controlled system is 8.6%higher than valve-controlled system);However,the efficiency of the pump-controlled system at 62.1%is 2.6 times that of the valve-controlled system at 23.5%.As a result,the total energy consumption of the pump-controlled system is lowered by 62.4%.

关 键 词：液压挖掘机 节能 泵控系统 阀控系统 典型挖掘循环 

分 类 号：TH137[机械工程—机械制造及自动化] TU621[建筑科学—建筑技术科学]