The invention provides a sliding torque control method and device under a deceleration strip working condition and a new energy automobile. The method comprises the steps that the wheel speed and the sliding target torque of each wheel are obtained, and the wheel speed fluctuation quantity and the wheel speed fluctuation quantity absolute value corresponding to each wheel are calculated based on the wheel speed; judging a wheel speed reverse activation condition according to the wheel speed fluctuation quantity corresponding to each wheel; when the wheels trigger the wheel speed reverse activation condition, whether the wheels are in the deceleration strip working condition or not is recognized based on the wheel speed reverse times and the wheel speed fluctuation quantity absolute value of all the wheels within the preset time period; and when the wheels are identified to be in the deceleration strip working condition, determining a sliding limiting torque coefficient by using the absolute value of the wheel speed fluctuation quantity, calculating a final sliding torque according to the sliding target torque and the sliding limiting torque coefficient, and transmitting the final sliding torque to a driving motor to execute torque control. The torque can be attenuated in advance when the vehicle passes through the deceleration strip, the smoothness of the whole vehicle is improved, and high-quality driving experience is provided for a driver.
本申请提供了一种减速带工况下的滑行扭矩控制方法、装置及新能源汽车。该方法包括:获取各车轮的轮速以及滑行目标扭矩,基于轮速计算每个车轮对应的轮速波动量及轮速波动量绝对值;依据各车轮对应的轮速波动量对轮速反向激活条件进行判断;当车轮触发轮速反向激活条件后,基于预设时间段内各车轮的轮速反向次数及轮速波动量绝对值,识别车轮是否处于减速带工况中;当识别车轮处于减速带工况中,利用轮速波动量绝对值确定滑行限制扭矩系数,依据滑行目标扭矩以及滑行限制扭矩系数,计算最终滑行扭矩,将最终滑行扭矩传递给驱动电机执行扭矩控制。本申请能够在车辆通过减速带时实现扭矩提前衰减,提高整车的平顺性,给驾驶员提供高品质的驾驶体验。
Sliding torque control method and device under deceleration strip working condition and new energy automobile
减速带工况下的滑行扭矩控制方法、装置及新能源汽车
2023-07-14
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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