路面和开关磁阻电机作用下电动汽车振动分析

为了分析开关磁电机驱动电动汽车振动性能,基于前轮和后轮路面激励的时间相关性,应用滤波白噪声法描述前轮和后轮路面激励,基于线性模型描述开关磁阻电机垂向激励,采用六自由度汽车振动平面系统描述轮毂电机驱动电动汽车振动.在城市行驶工况的B级路面和车速范围内,对路面和开关磁阻电机作用下电动汽车振动性能进行了研究.研究结果表明,在前轮和后轮电机存在同向偏心的情况下,低速对车轮加速度和车轮动载荷影响大,高速对座椅加速度和悬架动挠度影响大.

Vibration Analysis of Electric Vehicle under the Action of Road and Switched Reluctance Motor

To analyze vibration performance of electric vehicle with switched reluctance motor, a filter white noise method was used to describe the road excitations of front wheel and rear wheel based on time correlation between front wheel and rear wheel. A linear model was applied to describe the vertical excitation of switched reluctance motor, and in-wheel motor electric vehicle vibration was determined by a six degree of freedom plane system of vehicle. In the urban driving situation of B grade road and speed range, electric vehicle vibration was studied by simulation analysis under the action of road and switched reluctance motor. The results show that low speed has a big influence on the wheel accelerations and wheel dynamic load, while high speed has a great influence on seat accelerations and suspension dynamic deflections under the presence of the same directional motor eccentricity condition of the front wheel and rear wheel.