The driving stability and dynamics of distributed drive electric vehicles(DDEV)will become worse due to the influence of motor failures,while the fault-tolerant control of the drive system can effectively improve the driving stability and dynamics of DDEV.For this reason,an active fault-tolerant control method is proposed for the distributed drive electric vehicle drive motor.First,a vehicle dynamics model with seven degrees of freedom was built in Simulink,and then a fault observer based on the ex-tended kalman filter(EKF)was built to provide fault information for the active fault tolerance method established later.Then based on sliding mode control,an active fault-tolerant control model is built,and the driving torque is redistributed according to the fault information.Finally,a Carsim/Simulink co-simulation platform is built.The results show that the proposed active fault-tolerant control method can effectively improve the driving stability and dynamics of DDEV in a fault state.
Distributed DriveElectric VvehicleFault ObservationFault-Tolerant ControlSliding Mode Con-trolTorque Distribution
NETL
NSTL
维普
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