电动轮汽车起步加速性能联合仿真研究

Co-simulation Research on Starting Acceleration Performance of Electric-wheel Vehicle

四轮轮毂电机驱动汽车(简称电动轮汽车)是电动汽车的一个分支,其通过轮毂电机直接驱动车轮,给整车提供动力。虽然电动汽车节能环保,但存在动力性能不佳的情况。因此选用永磁无刷直流电机作为电动轮汽车驱动电机,利用永磁无刷直流电机外特性,分别采用Matlab软件和Carsim软件建立电机模型、模糊PID电机控制模型和整车模型,针对其起步加速性能进行联合仿真研究。仿真试验表明,在高附路面工况,有控制的电动轮汽车较于无控制的能够很好地改善其加速性能,其最高车速提升13%左右;在低附路面,利用模糊PID控制能够很好地解决无控制时产生的抖振问题,最高车速提升了16%左右。

Four in-wheel motor driving EV（electric-wheel vehicle）is a branch of an electric automobile,whose wheel motor directly drives the wheel and provides power to the vehicle. The electric vehicle with energy saving and environmental protection has a bad dynamic performance. In this paper, permanent magnet brushless DC motor is used as electric wheel motor,and the motor model,fuzzy PID control model and motor vehicle model are established in Matlab and Carsim software by using external characteristics of permanent magnet brushless DC motor, and then the study on the starting acceleration performance of electric wheel vehicle is carried through by joint simulation. The simulation results show that the electric wheel vehicle with control compared to no control can be very good to improve its acceleration performance in the high attached pavement condition,its maximum speed increases by 13 % ;fuzzy PID control can be used to solve the problem of chattering without control in the low attached pavement condition ,its maximum speed increases by 16%.