通过人工泄漏补偿提升挖机臂液压系统能效，节能8.5%。
Energy saving in off-road vehicles using leakage compensation technique
- 用比例流量阀+人工泄漏替代传统阀，减少溢流发热损失。
- 仿真与实验验证，新方案比传统方案节能8.5%。
- 适合重型工程机械能效优化研究者参考。
本文聚焦于提升重型土方设备中线性执行器的能源效率，特别针对挖掘机臂的应用。比较了两种液压回路的能效表现：一种使用传统比例方向控制阀（PDCV），另一种采用创新的比例流量控制阀（PFCV）并引入执行器两端的人工泄漏。PFCV在位置控制期间通过旁通泵的多余流量来减少热能损耗，而PDCV则依赖压力溢流阀。仿真与实验结果表明，采用PFCV的液压回路比传统回路节能8.5%。执行器的位置控制由经模糊控制器调优的PID控制器实现。液压回路的仿真基于MATLAB/Simulink平台，结果与实验数据对比一致。该方法有望显著提升重型土方设备中线性执行器的能效，降低环境影响和运行成本。
原文摘要 · Abstract (English)
The article focuses on enhancing the energy efficiency of linear actuators used in heavy earth moving equipment, particularly in the booms ofexcavation equipment. Two hydraulic circuits are compared in terms of energy efficiency, with one using a conventional proportional directionalcontrol valve (PDCV) and the other using an innovative solution of proportional flow control valve (PFCV) with artificial leakage between thetwo ends of the actuator. The PFCV reduces energy loss in the form of heat by bypassing the extra flow from the pump during position control,unlike the PDCV that uses a pressure relief valve. The hydraulic circuit using PFCV is found to be 8.5% more energy efficient than theconventional circuit using PDCV. The article also discusses the position control of the actuator, which is achieved using a PID controller tuned by a fuzzy controller. Thesimulation of the hydraulic circuit is carried out using MATLAB/Simulink, and the results are compared with experiments. Overall, the proposedapproach could lead to significant improvements in the energy efficiency of linear actuators used in heavy earth moving equipment, therebyreducing their environmental impact and operating costs.
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