Abstract: In view of the shortcomings of the current control strategy of new energy vehicles on ramp starting that has poor effect or needs to increase costs, this paper refers to a torque control method for new energy vehicles on ramp starting. When the vehicle controller recognizes that the driver releases the brake pedal at a rate exceeding a certain rate, it applies a certain pre tightening torque in advance. This pre tightening torque is the minimum torque that the vehicle will not slide on this road slope and braking depth. When the brake pedal is released gradually, the vehicle controller calculates the target driving torque according to the braking depth. When the calculated target driving torque is greater than the pre tightening torque, the driving torque is executed according to the calculated target driving torque, effectively ensuring that the vehicle can start smoothly on the ramp without slope slipping.

Key words: New energy vehicles; Ramp start; Torque control; Anti slide slope; Anti impact

摘要： 针对目前新能源车辆坡道起步的控制策略效果不佳或者需要增加成本的缺点，文章提 到一种新能源车辆坡道起步扭矩控制方法，当整车控制器识别到驾驶员以超过一定的速率释 放制动踏板时，提前施加一定的预紧扭矩，此预紧扭矩为该车辆在此道路坡度和制动深度下 不产生溜坡现象的最小扭矩；当制动踏板逐步释放时，整车控制器根据制动深度进行目标驱 动扭矩的计算，当计算目标驱动扭矩大于预紧扭矩时，驱动扭矩按照计算目标驱动扭矩执行， 有效确保了车辆不产生溜坡现象的情况下平稳坡道起步。

关键词: 新能源汽车；坡道起步；扭矩控制；防溜坡；防冲击