液压与气动2024，Vol.48Issue(7)：129-134,6.DOI:10.11832/j.issn.1000-4858.2024.07.015
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
摘要
Abstract
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Key words
hydraulic excavator/energy saving/pump-controlled system/valve-controlled system/typical digging cycle分类
机械制造引用本文复制引用
国钰,张树忠,王亚兵,许弘焜,王博瑞..中型挖掘机泵控系统与阀控系统的能效对比[J].液压与气动,2024,48(7):129-134,6.基金项目
福建省自然科学基金(2021J011051) （2021J011051）
2022年省级科技创新重点项目资助(2022G02007) （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) （MU-AMC202302）
福建理工大学海洋研究专项基金(GY-Z23087) （GY-Z23087）
