The invention discloses a single-pedal mode deceleration operation control method for an electric vehicle under ice and snow road conditions. The method comprises the following steps that a starting signal is responded, a single-pedal mode is switched into, braking target torque is obtained, a motor is driven by the target braking torque, and the target braking torque is deceleration torque; obtaining a first vehicle speed value, wherein the first vehicle speed value is obtained by the ESP; meanwhile, a second vehicle speed numerical value is obtained, and the second vehicle speed numerical value is obtained through MCU resolver signal conversion; calculating a vehicle speed difference value between the second vehicle speed value and the first vehicle speed value; when it is judged that the vehicle speed difference value is larger than or equal to a first preset threshold value, first braking torque is output to the motor, and the ESP can be connected; the ESP establishes hydraulic braking in the single pedal mode on the basis of the difference between the target braking torque and the first braking torque, and performs active braking control.
本申请公开了一种冰雪路况下电动汽车单踏板模式减速运行控制方法。本申请设计有如下步骤响应于启动信号,切换进入单踏板模式,并获取制动目标扭矩,以目标制动扭矩驱动电机,所述目标制动扭矩为减速扭矩;获取第一车速数值,所述第一车速数值由ESP获取;同时获取第二车速数值,所述第二车速数值由MCU旋变信号换算获取;计算所述第二车速数值与所述第一车速数值的车速差值;判断车速差值大于等于第一预设阈值时,输出第一制动扭矩至电机,即可接入ESP;ESP在单踏板模式下基于目标制动扭矩和第一制动扭矩的差值来建立液压制动,进行主动刹车控制。
Single-pedal mode deceleration operation control method and system for electric automobile under ice and snow road conditions
冰雪路况下电动汽车单踏板模式减速运行控制方法及系统
2023-06-13
Patent
Electronic Resource
Chinese
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