The invention discloses a method, a system, a medium and equipment for optimizing hill-holding jitter of an electric automobile, and the method comprises the following steps: 1) when a brake pedal is not activated and the rotating speed of a motor has a negative rotating speed of more than n at a forward gear or has a positive rotating speed of more than n at a reverse gear, after the state is continuously x times, determining that the automobile slips on a slope, and entering hill-holding control at the moment; 2) selecting a corresponding PI parameter according to the rotating speed when entering the hill-holding control, and carrying out rotating speed ring P I control; wherein the rotating speeds are different when the slope holding control is started, and the corresponding P I parameters are different; and (3) when the hill-holding time reaches the locked-rotor protection time threshold value and the brake pedal or the accelerator pedal is activated, the hill-holding control is quitted. The method has the advantages that the quick response of the vehicle is remarkably improved, the backward sliding distance of the vehicle is reduced, the safety of the vehicle is improved, the response smoothness is guaranteed, shaking impact is avoided, and the NVH performance of the whole vehicle is improved.
本发明公开了一种电动汽车驻坡抖动优化方法、系统、介质及设备,此方法包括步骤:1)当刹车踏板未激活且电机转速在前进档有n以上的负转速或后退档有n以上的正转速时,此状态连续x次后,确认车辆有溜坡,此时进入驻坡控制;2)根据进入驻坡控制时的转速选择对应的PI参数,进行转速环P I控制;其中进入驻坡控制时的转速不同,对应的P I参数不同;3)当驻坡时间达到堵转保护时间阈值、刹车踏板激活或加速踏板激活时,退出驻坡控制。本发明具有显著提高车辆的快速响应、减少车辆后溜距离、提高车辆的安全性、保证响应的平顺性、避免抖动冲击、提高整车的NVH性能等优点。
Method, system, medium and equipment for optimizing hill-holding jitter of electric vehicle
一种电动汽车驻坡抖动优化方法、系统、介质及设备
2022-07-29
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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