基于MATLAB的轮毂电机驱动电动汽车的平顺性研究

Study on Smooth of Electric Vehicle Driven by Hub Motor Based on MATLAB

轮毂电机驱动技术是一种比较新颖的应用到电动汽车的驱动方式,作为新型能源汽车的一种,轮毂电机驱动车辆具有零尾气排放、传动结构简单高效、动力输出可控等诸多优点。但因轮毂电机的存在导致非簧载质量增加且电机激振力明显,导致电动车的舒适性差,操纵稳定性恶化。文章运用1/4电动车模型,应用频域分析法和时域分析法通过仿真分析振动系统在非簧载质量增加和电机运转时转矩波动引起的垂向激振力对车辆平顺性的影响。

Hub motor drive technology is a relatively novel driving method applied to electric vehicles.As a new type of energy vehicle,hub motor drive vehicles have many advantages such as zero exhaust emission,simple and efficient transmission structure,and controllable power output.However,due to the existence of hub Motors,the non-reed load quality increases and the motor excitation force is obvious,resulting in poor comfort and deterioration of operating stability of electric vehicles.This paper uses 1/4 electric vehicle model,frequency domain analysis method and time domain analysis method to analyze the influence of vertical vibration force on vehicle smoothness caused by vibration system in non-reed load quality increase and torque fluctuation during motor operation.