The invention discloses an electric vehicle crawling control method and system, and the method comprises the steps: S1, obtaining a vehicle state signal, judging whether a crawling mode enable signal is true or not, if yes, triggering a crawling mode, and entering the crawling mode; otherwise, continuously acquiring the vehicle state signal; s2, according to the working conditions of crawling starting, climbing and flat road crawling, hierarchical control is conducted on crawling driving torque; s3, according to hierarchical control of the crawling driving torque in the step S2, crawling driving torque gradient management is carried out, and gradient distribution is carried out according to the difference value between the required vehicle speed and the actual vehicle speed; and S4, outputting the final crawling driving torque of crawling gradient control. Through the synergistic effect of double-layer PID control, rapid starting and stable crawling of the electric automobile can be achieved under different road conditions, the driving safety and comfort are improved, and the method is suitable for various electric automobiles and has high practicability and economical efficiency.
本发明公开了一种电动汽车蠕行控制方法及系统,包括:S1、获取车辆状态信号,判断蠕行模式使能信号是否为真,若为真,则蠕行模式触发,进入蠕行模式;否则,继续获取车辆状态信号;S2、根据蠕行起步、爬坡和平路蠕行工况,对蠕行驱动扭矩进行分层控制;S3、根据步骤S2中的蠕行驱动扭矩分层控制,进行蠕行驱动扭矩梯度管理,并根据需求车速与实际车速的差值,进行梯度分配;S4、输出蠕行梯度控制的最终蠕行驱动扭矩。通过双层PID控制的协同作用,本发明能够在不同路况下实现电动汽车的快速起步和平稳蠕行,提高行车安全性和舒适性,并适用于多种电动汽车,具有较高的实用性和经济性。
Creeping control method and system for electric vehicle
一种电动汽车蠕行控制方法及系统
2024-06-04
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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