The invention discloses a steep slope slow descent control method based on a pure electric bus system, comprising the following steps of: 1, a driving intention signal of a vehicle is input into a vehicle control unit, and an HDC switch is turned on to ensure that the signals of a brake pedal and an accelerator pedal are 0 percent; 2, the vehicle control unit receives the driving intention requiring slow descent of the steep slope, and gives the required braking torque force by receiving a feedback rotating speed signal of a motor controller; and 3, at the moment, the tail lamp is turned on, the instrument displays that steep slope slow descent is being executed, the motor controller controls the motor to supply reverse electric braking force by controlling the IGBT after receiving the required torque of the vehicle control unit, and the vehicle is at a relatively safe speed. According to the steep slope slow descent control method based on the pure electric bus system, mechanical abrasion brought to the brake shoes by pneumatic braking during downhill is reduced in an electric braking mode. And meanwhile, by increasing feedback current, the energy recovery capability is improved.
本发明公开了一种基于纯电动客车系统的陡坡缓降控制方法,步骤如下:步骤一:由车辆的驾驶意图信号输入给整车控制器,此时打开HDC开关,制动踏板和加速踏板信号为0%;步骤二:整车控制器接收到需求陡坡缓降的驾驶意图,通过接收电机控制器的反馈转速信号给定所需的制动扭矩力大小;步骤三:此时尾灯亮起来,仪表显示正在执行陡坡缓降,电机控制器在接收到整车控制器的需求扭矩后通过控制IGBT来控制电机给反向电制动力,车辆处于一个比较安全的车速。本发明基于纯电动客车系统的陡坡缓降控制方法通过电制动的方式减少了下坡时气制动给刹车蹄片带来的机械磨损。同时通过增加回馈电流,增大能量回收的能力。
Steep slope slow descent control method based on pure electric bus system
一种基于纯电动客车系统的陡坡缓降控制方法
2020-09-25
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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