电动轮驱动的电动汽车动力学仿真

采用自然坐标系下的整车动力学模型,模拟变速或转向过程中可能存在的变化情况,进行了四电动轮独立驱动的电动汽车仿真。仿真试验表明,在变速或转向的过程中,各轮的输出转矩可能会有较大差异。因此在此类电动汽车的设计中应当充分考虑对变速或转向时各轮的转矩加以控制,以提高操控性能。

A Dynamics Simulation on an Electric Vehicle with Electric-wheel Drive

A dynamics model for complete vehicle is set up in natural coordinates,and a simulation on speed changing and steering of a 4WD electric vehicle with motor-in-wheel drive is conducted.The results show that during the processes of speed changing and steering,the output torque of different wheels may have substantial discrepancy.Therefore in the process of speed changing or steering,the torque control for each wheel should be taken into consideration to improve the controllability of vehicle.