The invention discloses an automobile steep slope slow descent control method. The method comprises the steps that when an automobile steep slope slow descent function is in an open state, a current automobile speed is obtained in real time, and when the automobile speed is lower than a set value A, the automobile enters a steep slope slow descent preparation state; when the vehicle is in the steep slope slow descent preparation state, vehicle parameters are obtained in real time, steep slope slow descent is controlled when the vehicle parameters meet preset execution conditions, and when thevehicle speed is larger than or equal to a set value A, the vehicle exits from the steep slope slow descent preparation state; and when steep slope slow descent control is executed, a target torque ofa motor is obtained according to the target vehicle speed, the motor is controlled to execute the target torque, steep slope slow descent control is stopped when a preset exit condition is met, and the steep slope slow descent preparation state is returned. After a vehicle control unit is used for judging that a steep slope slow descent condition is met, steep slope slow descent can be achieved through motor simulation, and a certain degree of energy recovery can be achieved; and meanwhile, the cost of parts of the whole vehicle is reduced, and potential functional safety hazards caused by the parts are decreased.
本发明揭示了一种汽车陡坡缓降控制方法:当汽车陡坡缓降功能为开启状态时,实时获取当前车速,当车速低于设定值A时,进入陡坡缓降准备状态;当处于陡坡缓降准备状态下,实时获取车辆参数且当车辆参数满足预设执行条件时执行操控陡坡缓降,当车速大于等于设定值A时,退出陡坡缓降准备状态;当执行操控陡坡缓降时,根据目标车速获取电机目标扭矩,控制电机执行目标扭矩,并且当满足预设退出条件时停止执行操控陡坡缓降,返回陡坡缓降准备状态。本发明利用整车控制器判断满足陡坡缓降条件后,可通过电机模拟实现陡坡缓降,可实现一定程度能量回收;与此同时,降低整车零部件成本,减少零部件带来的功能安全隐患。
Automobile steep slope slow descent control method and system
一种汽车陡坡缓降控制方法和系统
2020-11-27
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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