分析插电式混合动力系统的结构特点,建立发动机数值模型、电机电池联合工作数值模型、自动离合器模型和整车动力学模型。分析系统输入输出信号的类型及特征,搭建基于MATLAB/xPC的插电式混合动力客车硬件在环测试系统。以纯电动和纯发动机工况切换为例,将驾驶员操作油门变化的实际数据作为测试的输入条件,对插电式混合动力客车的控制逻辑进行了硬件在环测试。测试结果显示自动离合器在油门变化剧烈时会出现频繁分离结合的现象。通过对测试数据和控制逻辑的分析,发现故障原因并进行了控制逻辑修正。采用修正后的控制逻辑在道路测试中取得良好的效果。
Mathematical modes of engine,cooperation of motor and batteries,automatic clutch and vehicle are built with analysis of configuration of plug-in hybrid electric vehicle(PHEV).Specifications of data input and output and signal characters are defined.Hardware in the loop(HIL) system based on MATLAB/xPC for PHEV is built up.The motor/engine drive shift control logic test of PHEV is carried with inputting real acceleration pedal data.Testing results show that automatic clutch acts abnormally.Bugs in control logic are found out.Road test results with revised control logic are very good.