The invention belongs to the technical field of vehicle control. The invention particularly relates to a control method and system for distributed driving vehicle torque. The control method for the distributed driving vehicle torque comprises the steps: obtaining a steering wheel angle of a vehicle, determining the driving state of the vehicle according to the steering wheel angle, controlling thecoaxial opposite-side motor of a fault motor to have the same torque as the fault motor according to the driving state being a straight driving state, and controlling the diagonal-side motor of the fault motor to perform fault degradation according to the driving state being a steering driving state. According to the control method for distributed driving vehicle torque, for different driving states of a vehicle, processing modes of motor faults are different. When the vehicle runs linearly, the torque of the coaxial opposite side motor of the fault motor is directly controlled to be the sameas that of the fault motor, and when the vehicle runs in a steering mode, the situation of excessive steering or insufficient steering occurs, so that the motor on the opposite angle side of the fault motor need to be controlled to counteract excessive steering or make up insufficient steering, and the stability of the vehicle is kept.
本发明属于车辆控制技术领域,具体涉及一种分布式驱动车辆扭矩的控制方法及系统,该分布式驱动车辆扭矩的控制方法包括获取车辆的方向盘转角,根据方向盘转角确定车辆的行驶状态,根据行驶状态为直线行驶控制故障电机的同轴对侧电机与故障电机扭矩相同,根据行驶状态为转向行驶控制故障电机的对角侧的电机进行故障降级。根据发明实施例的分布式驱动车辆扭矩的控制方法,对于车辆的不同行驶状态下电机出现故障的处理方式不同,当车辆为直线行驶,直接控制故障电机的同轴对侧电机与故障电机的扭矩相同,当车辆为转向行驶,会出现转向过度或转向不足的情况,因此需要控制故障电机的对角侧的电机,以抵消转向过度或弥补转向不足,保持车辆的稳定性。
Control method and system for distributed driving vehicle torque
分布式驱动车辆扭矩的控制方法及系统
2020-05-08
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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