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纯电动汽车坡道起步防溜系统及控制策略的研究 Research on the Anti-Slip System and Anti-Slip Control Strategy of Pure Elect

2021-11-30李磊LILei黄鑫HUANGXin翟世欢ZHAIShi-huan杜森DUSen

内燃机与配件 2021年22期

李磊 LI Lei 黄鑫 HUANG Xin 翟世欢ZHAI Shi-huan 杜森 DU Sen

摘要:本文提出一种由加速踏板、制动踏板、档位、整车控制器、电机控制器及电机、陀螺仪组成的防溜系统。整车控制器通过踏板、挡位状态、陀螺仪等外设判断车辆是否需要进入防溜工作模式,车辆的防溜工作模式和正常驱动模式的切换需要经过预防溜模式,初始防溜扭矩依据陀螺仪检测到的坡度值给出,以使系统的响应速度提高,降低车辆后溜距离。如果整车处于防溜坡状态,VCU根据车辆倾角及当前电机转速和电机执行扭矩情况实时调整防溜坡的扭矩值,并持续判断车辆状态是否可以退出防溜坡模式。

Abstract: The anti-slip system described in this article consists of an accelerator pedal, a brake pedal, gears, a vehicle control unit, a motor controller, a motor, and a gyroscope. The vehicle control unit judges whether the vehicle needs to enter the anti-slip working mode through the pedal, gear status, gyroscope and other peripherals. The switch between the anti-slip working mode and the normal driving mode of the vehicle needs to go through the previous anti-slip mode. The slope value detected by the instrument is given to improve the response speed of the system and reduce the slip distance of the vehicle. If the vehicle is in the anti-slip state, the VCU will adjust the anti-slip torque value in real time according to the vehicle inclination, the current motor speed and the motor torque, and continuously judge whether the vehicle state can exit the anti-sliding mode.

關键词:纯电动汽车;坡道起步;防溜系统;防溜策略

Key words: pure electric vehicle;anti-slip start;anti-slip system;anti-slip strategy

中图分类号:U463.1           文献标识码:A                      文章编号:1674-957X(2021)22-0001-03

近年来,世界主要汽车大国纷纷加强战略谋划、强化政策支持,新能源汽车已成为全球汽车产业转型发展的主要方向和促进世界经济持续增长的重要引擎。另一方面,在全球能源紧缺、环境污染日渐恶化的背景下,我国政府提出了“3060碳峰值碳中和”的目标愿景,从国情出发促使我们要加大对电动汽车的研发力度[1]。随着电动汽车日益普及,人们对其安全技术问题和驾驶舒适度的要求越来越高,其中防溜坡功能是一个重点关注项目。但目前对电动汽车防溜坡功能的研究还比较滞后,大多停留在传统车辆的已有技术上,功能不完善的车辆严重影响了驾驶员的驾驶体验,也加大了电动汽车坡道起步的难度,增加了车辆起步的事故率[2]。……

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