电动轮驱动车辆电子差速技术研究

Investigation into Electronic Differential Technology for In-wheel Motor Drive Electric Vehicle

电动轮驱动式电动汽车是一种新的电动汽车型式,电子差速是其一项关键的技术。针对两前轮独立驱动的电动轮汽车,在利用Ackermann&Jeantand转向模型对其转向时的两前轮差速关系进行理论分析的基础上,通过Matlab/Simulink软件仿真分析确定了不同方向盘转角时的两前轮差速关系,据此设计了两前轮电子差速模拟试验台架,并采用一驱动电机力矩控制,另一驱动电机速度控制的PID闭环控制模式实现两前轮的电子差速。台架模拟试验验证了所提出的两前轮电子差速控制方法的有效性。

The in-wheel motor drive electric vehicle is a novel electric vehicle and the electronic differential control is one of its key technologies. For the two-front-wheel motors independent drive vehicle, the differential relationship among the two wheels is analyzed according to the Ackermann ＆ Jeantand steer mode , and then is determined through the simu- lation analysis by Matlab / Simulink software at different steering wheel angles, and design an analog test bench for the electronic differential control of the two front wheels. One of the drive motors use torque control , and another use speed control. The electronic differential speed between the two wheels is achieved through this PID control closed loops. This electronic differential speed steering control method for two-front-wheel motors independent drive vehicle is validated through the simulation test.