The invention discloses a creeping control method for a new energy automobile. The creeping control method comprises the following steps that S10, power-on initialization is conducted, and high-voltage read is conducted; s20, estimating the vehicle weight on line through Kalman filtering so as to judge which state the current vehicle belongs to is a no-load state, a half-load state and a full-load state, and transmitting a vehicle weight estimation result to a crawling control module; step S30, judging whether a condition for activating the crawling control function is met or not, if so, executing the next step, and if not, repeating the judgment; and S40, dynamically correcting the crawling control torque in real time by the crawling torque control module according to the real-time estimation result of the vehicle weight estimation module. According to the method, the effectiveness of rising gradient setting of the crawling control torque is guaranteed, the crawling function driving experience of a driver is improved, the function safety of crawling control is guaranteed to a certain extent, meanwhile, online crawling torque correction is conducted based on the estimated vehicle weight, and the performance consistency of the crawling function under different loads of the whole vehicle is guaranteed.
本发明公开了一种新能源汽车蠕行控制方法,包括以下步骤:步骤S10,上电初始化,上高压ready;步骤S20,通过卡尔曼滤波在线估算车重,从而判断出当前车辆属于车空载、半载和满载的哪种状态,并将车重估算结果传递给蠕行控制模块;步骤S30,判断当前是否满足激活蠕行控制功能的条件,若是则进行下一步,若否则重复进行判定;步骤S40,蠕行扭矩控制模块根据车重估算模块的实时估算结果来实时动态修正蠕行控制扭矩。本发明保证了蠕行控制扭矩的上升梯度设置的有效性,提升了驾驶员的蠕行功能驾驶体验,也一定程度上保证了蠕行控制的功能安全,同时基于估算车重进行在线蠕行扭矩修正,保证了蠕行功能在整车不同载重下的表现一致性。
New energy automobile crawling control method
一种新能源汽车蠕行控制方法
2024-12-31
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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