An Active Fault Tolerant Control Method for DDEV Based on EKF
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
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万方数据
维普
