【摘要】 文章针对分布式驱动电动汽车转向电子差速策略进行研究。分析了目前转向电子差速策略,基于车辆转向行驶动力学以及开放式机械差速器工作原理,提出了转向时驱动电机等转矩分配的自适应电子差速策略;基于Matlab/Simulink和Carsim建立的分布式驱动电动汽车联合仿真平台,对比分析了不同转向行驶工况时等转矩分配电子差速策略的分布式驱动电动汽车和开放式机械差速器的集中式驱动电动汽车的差速性能以及操纵稳定性。仿真结果表明,2种驱动方式电动汽车的差速性能相同,相比于集中式驱动电动汽车的转向操纵稳定性,分布式驱动电动汽车转向操纵稳定性稍差。更多还原

【Abstract】 The control strategy of electronic differential for distributed drive electric vehicle was studied.The existing electronic differential strategies were analyzed,and by analyzing the steering dynamics and the working principle of open mechanical differential,the self-adaptive electronic differential strategy of equal torque allocation under steering condition was proposed.Based on the co-simulation platform of Carsim and Matlab/Simulink for distributed drive electric vehicle,and under different steering conditions,the differential performances and steering stability of the distributed drive electric vehicle with self-adaptive electronic differential strategy and the concentrated drive electric vehicle with open mechanical differential were analyzed and compared.The simulation results show that the differential performances are the same for two kinds of driving modes,but the steering stability of the distributed drive electric vehicle is slightly lower than that of the concentrated drive electric vehicle.更多还原