The invention discloses a system and method for rapidly achieving ramp parking of an electric vehicle, and the system comprises a ramp sliding judgment module which is used for judging the intention of a driver according to the change trend of the brake opening degree when a brake signal exists, so as to judge whether to enter a ramp parking enabling mode or not according to the intention of the driver and the real-time ramp sliding state, judging whether to quit the hill-holding control mode or not; the rotating speed closed-loop amplitude limiting direction judgment module is used for judging the rotating speed closed-loop amplitude limiting direction according to the motor rotating speed direction and accelerator and brake signals; and the hill-holding control module is used for performing motor zero-speed control according to the rotating speed closed-loop amplitude limiting direction. According to the system and method for rapidly achieving ramp parking of the electric automobile, the intention of a driver is judged under the condition that a brake signal exists, backward sliding exists, ramp parking control is started in advance, parking is rapidly achieved without shaking, and the ramp parking distance is effectively shortened; and according to the slope sliding rotation speed direction, rotation speed closed-loop output is judged to be subjected to one-way amplitude limiting, and shaking caused by inconsistent directions of slope parking control output torque and mechanical braking torque is avoided.
本发明公开了一种快速实现电动汽车坡道驻停的系统及方法,该系统包括:溜坡判断模块用于在有刹车信号时,根据刹车开度变化趋势判断司机意图,以根据司机意图和实时溜坡状态判断是否进入驻坡使能模式,并判断是否退出驻坡控制模式;转速闭环限幅方向判断模块用于根据电机转速方向、油门和刹车信号,判断转速闭环限幅方向;驻坡控制模块用于根据转速闭环限幅方向进行电机零速控制。本发明提供的快速实现电动汽车坡道驻停的系统及方法,在有刹车信号情况下判断司机意图且有后溜,提前进入驻坡控制,快速实现驻车且无抖动,有效缩短驻坡距离;根据溜坡转速方向对转速闭环输出判定单向限幅,避免驻坡控制输出转矩与机械刹车转矩方向不一致出现抖动。
System and method for quickly realizing ramp parking of electric vehicle
快速实现电动汽车坡道驻停的系统及方法
2023-01-31
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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