分布式驱动电动汽车转向失效控制研究

Research on Distributed Drive Electric Vehicle Steering Failure Control

为解决分布式驱动电动汽车转向电机故障而造成的转向失效问题,文章构建了转向电机失效控制架构,并对电机故障的几种情况展开讨论,提出差动力矩控制策略。通过Simulink与CarSim联合仿真,搭建整车模型,选取单电机失效时的圆周工况与单移线工况进行仿真验证。结果表明,差动转向力矩控制策略能够在单个转向电机发生故障的情况下,使汽车保持转向、平稳行驶,提高了汽车行驶的安全性。

In order to solve the problem of steering failure caused by the failure of the steering motor of the distributed drive electric vehicle,this paper constructs a steering motor failure control architecture,discusses several situations of motor failure,and proposes a differential torque control strategy,which is jointly simulated by Simulink and CarSim,build the whole vehicle model,and select the circular working condition and single-line shifting working condition when a single motor fails for simulation verification.The results show that the differential steering torque control strategy can keep the car steering and drive smoothly when a single steering motor fails,and improve the safety of the car.