基于硬件在环仿真试验平台的电动液压助力系统能耗分析

Energy consumption analysis of electro-hydraulic power steering system based on hardware-in-loop simulation test

为了研究电动液压助力转向(EHPS)系统的能耗影响因素,该文搭建了EHPS系统硬件在环仿真试验平台,包括主控平台、方向盘驱动模块、测试系统模块和转向阻力液压加载模块。利用该平台对某型EHPS系统主要组成元件的能耗进行了测试,该试验条件是在模拟农村道路的驾驶情况下,研究影响电动液压助力转向系统能耗的关键因素。试验结果表明,电动液压助力转向系统的待机功率,液压油的温度、黏度,转向阀的压降以及转向齿条力的大小对电动液压助力转向系统的能耗影响较大。研究结果对开发新型节能EHPS系统具有指导意义。

In order to study the factors of the energy consumption in the EHPS（electro-hydraulic power steering）system, hardware-in-loop simulation test bench was built.The test bench included a master platform,a steering wheel driving module,a test system module and steering resistance’s hydraulic loading modules.Energy consumption of main components of a certain type of EHPS system was tested by the bench,and the key factors of the energy consumption were studied by simulating the country road situation.The results showed that the energy consumption in EHPS system were significantly impacted by standby power,hydraulic oil temperature,viscosity,pressure drop of steering valve,as well as power of the steering rack.The research is benefit to development of new energy-saving EHPS system.