The invention relates to the technical field of automobile control, in particular to a safety control system and control method for a four-wheel drive automobile under a high-speed working condition. The system comprises a hub motor fault judgment module used for judging whether a hub motor is in a fault state or not; a torque distribution module, used for formulating a torque distribution method for reducing the torque of the hub motor coaxial with the faulted hub motor to a set value and increasing the torque of two hub motors not coaxial with the faulted hub motor to keep the total driving force of the vehicle unchanged when the single hub motor breaks down; and a whole vehicle control module, used for obtaining the torque distribution mode transmitted by the torque distribution module to control a hub motor. The control system is simple in structure and concise and efficient in operation logic, the stability and safety of the vehicle can be maintained under the condition that a single hub motor breaks down under the high-speed running working condition of the four-hub motor vehicle, rear-end collision accidents are effectively avoided, and the control system has great popularization value.
本发明涉及汽车的控制技术领域,具体地指一种四轮驱动汽车高速工况下安全控制系统及控制方法。包括,轮毂电机故障判断模块,用于判断轮毂电机是否为故障状态;扭矩分配模块,用于在单个轮毂电机出现故障时制定降低与故障轮毂电机同轴的轮毂电机的扭矩至设定值、增加与故障轮毂电机非同轴的两个轮毂电机的扭矩使车辆总驱动力维持不变的扭矩分配方法;整车控制模块,用于获取扭矩分配模块传送的扭矩分配方式对轮毂电机进行控制。本发明的控制系统结构简单,运行逻辑简洁高效,能够在四轮毂电机车辆高速行驶工况下出现单轮毂电机故障的情况下维持车辆的稳定和安全性,有效避免了追尾事故的发生,具有极大的推广价值。
Safety control system and control method for four-wheel drive automobile under high-speed working condition
一种四轮驱动汽车高速工况下安全控制系统及控制方法
2021-08-31
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein |
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