双轮毂电机驱动电动汽车电子差速控制研究

Study on Electronic Differential Control of Electric Vehicle with Dual In-wheel-motor Drive

针对轮毂电机驱动电动汽车电子差速问题,以横摆角速度为控制目标,提出了滑模变结构控制的电子差速控制策略,并进行了CarSim与Matlab/Simulink联合仿真和道路试验。仿真与试验结果表明,相比于无差速控制工况,差速控制下车辆的横摆角速度可以较好地跟踪理想横摆角速度,车辆的转向性能得到提高,且有一定的转向盘助力效果。

In view of the control problem of electronic differential system in a electronic vehicle with dual in-wheelmotor drive, an electronic differential control strategy based on sliding mode control is proposed with the yaw rate of the vehicle as control objective, and the Carsim and Matlab/Simulink joint simulation and road test are conducted. The simulation and test results indicate that, compared with no differential speed control condition, the yaw rate of the vehicle can be better tracking the ideal yaw rate, the vehicle steering performance is improved, and the driver can have a certain steering wheel power effect.