The invention relates to the technical field of vehicle control, in particular to an electric vehicle driving anti-skid control method and system. If the TCS is in the activated state, the output torque Ft is equal to Fa, and otherwise, the effectiveness of a brake pedal signal is judged; if the output torque is valid, the output torque Ft is equal to Fa, and if the output torque is invalid, the slip rate lambda is judged; if the slip rate lambda is in the optimal slip rate interval, executing accumulated counting of the driving anti-slip exit time T1 and zero clearing of the accumulated counting of the driving anti-slip enabling time T2 until T1 is greater than the driving anti-slip exit time Tqu, and outputting torque Ft = Fa; on the contrary, driving anti-slip exit time T1 accumulated counting zero clearing and driving anti-slip enabling time T2 accumulated counting are executed till T2 is larger than driving anti-slip enabling time Ten, and whether the current demand torque Fa is larger than the output torque limit value FLimit or not is judged; if yes, the output torque Ft is equal to Fa * C; if not, the output torque Ft is equal to Fa. According to the method, the in-vehicle space is saved, the hardware architecture design difficulty is simplified, and arrangement of hardware equipment is facilitated.
本发明涉及车辆控制技术领域,具体涉及一种电动汽车驱动防滑控制方法及系统。若TCS处于激活状态,则输出扭矩Ft=Fa,反之,则对制动踏板信号的有效性进行判断;若有效,则输出扭矩Ft=Fa,若无效,则对滑转率λ进行判断;若滑转率λ处于最优滑转率区间,则执行驱动防滑退出时间T1累加计数,驱动防滑使能时间T2累加计数清零,直至T1大于驱动防滑退出时间Tqu,则输出扭矩Ft=Fa;反之,则执行驱动防滑退出时间T1累加计数清零,驱动防滑使能时间T2累加计数,直至T2大于驱动防滑使能时间Ten,则判断当前需求扭矩Fa是否大于输出扭矩限值FLimit;若是,则输出扭矩Ft=Fa*C;若否,则输出扭矩Ft=Fa。本方法节约了车内空间,简化了硬件架构设计难度,有利于硬件设备的布置。
Electric vehicle driving anti-skid control method and system
一种电动汽车驱动防滑控制方法及系统
2023-12-05
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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