摘要
针对四轮轮毂电机电动汽车转向时四轮差速问题,进行了电子差速控制研究。设计了电子差速控制策略,建立差速运动参考模型,根据四轮轮毂电机电动汽车四轮驱动力矩独立可控的优势,通过驱动力矩分配器对四轮驱动力矩进行合理分配,实现了实际轮速跟踪参考轮速,并在Matlab/Simulink里搭建了四轮轮毂电机电动汽车电子差速系统模型,通过CarSim与Matlab/Simulink联合仿真进行了验证。结果表明:电子差速差速控制策略能够有效实现转向时四轮差速控制,提高电动汽车的操纵稳定性。
For differential problem of four wheel drive in-wheel motor electric vehicle during steering process,the electronic differential control has been studied. The electronic differential control strategy was designed,and the differential reference kinematic model was established. According to the advantages that the four wheel drive torque of the four wheel in-wheel motor electric vehicle can be independently control,the four wheel drive torque was allocatedreasonably through the drive torque distributor,which could achieve the actual wheel speed tracking reference wheel speed. The electronic differential system model of the four wheel in-wheel motor electric vehicle was established in Matlab / Simulink. The model was verified through the co-simulation of Car Sim and Matlab /Simulink. The results showed that the electronic differential control strategy could effectively realize four wheel differential during steering process and improve the handling stability of electric vehicle.
出处
《机床与液压》
北大核心
2015年第24期60-66,共7页
Machine Tool & Hydraulics
基金
supported by National Youth Natural Science Foundation of China (No.51305190)
the Education Department of Liaoning Province (No.L2012217)
