电动全地形车动力性及乘坐舒适性分析

Power performance and ride comfort analysis of electric all-terrain vehicles

传统全地形车的整车车体振动主要由发动机振动和路面激励引起.为了提高全地形车的乘坐舒适性,用无刷直流电机取代发动机设计了后轮电机驱动的电动全地形车(EATV),并对其动力性和乘坐舒适性进行了分析.利用机械动力学仿真软件ADAMS建立了包含蓄电池、电机、电机控制器、车架等电动全地形车整车动力学模型;利用Simulink软件设计了车速与电流双闭环电机控制系统.通过ADAMS-Simulink联合仿真,测试了直线加速工况下电动全地形车后轮电机驱动的动力性,结果表明,所设计的电机控制系统能够满足全地形车的动力性需求.模拟了电动全地形车与传统全地形车在不平路面上的行驶状况,对其乘坐舒适性进行了对比分析,结果表明,电动全地形车的乘坐舒适性有显著提高.

The whole vehicle vibration of a traditional all-terrain vehicle（ATV）is mainly caused by excitations from the engine and road surface.In order to improve the ATV ride comfort,this work designed a rear wheel-drive electric all-terrain vehicle（EATV）by a brushless direct current motor（BLDCM）instead of an engine,and analyzed its power performance and ride comfort.An EATV dynamics model including storage batteries,a motor,a motor controller,a frame,etc.,was established using software ADAMS;A speed and current double closed-loop motor control system was designed using software Simulink.The power performance of rear wheel-drive EATV in straight line acceleration was tested by ADAMS-Simulink dynamic co-simulation,and the results showed that the designed control system could satisfy the requirement of the power performance.In addition,comparison and analysis of simulation results of EATV and traditional ATV on the uneven pavement turn out that the ride comfort of the EATV is significantly better than that of ATV.