The invention discloses a neutral-gear sliding speed estimation method based on a high-precision map, and the method comprises the steps: 1) obtaining vehicle parameters and slope data in real time when a vehicle slides in a neutral gear; (2) after the neutral gear sliding time reaches the set time, acceleration model parameters are determined based on vehicle parameters and gradient data; 3) predicting the acceleration at the current moment according to the acceleration model parameters; 4) predicting the vehicle speed at the next moment based on the predicted acceleration at the current moment; 5) predicting the driving distance from the current moment to the next moment according to the predicted vehicle speed at the next moment; 6) searching the road gradient at the front driving distance through the high-precision map, and predicting the acceleration at the next moment based on the searched road gradient and the predicted vehicle speed at the next moment; and (7) repeating the steps (4)-(6) to predict the future vehicle speed in the neutral gear sliding process. Based on the vehicle information and the high-precision map data, the acceleration model parameters are determined, the vehicle speed in the neutral gear sliding process is predicted, the method is simple, and the predicted vehicle speed is high in accuracy.
本发明公开了一种基于高精度地图的空挡滑行车速预估方法,1)车辆在空挡滑行时,实时获取车辆参数及坡度数据;2)当空挡滑行时间达到设定时间后,基于车辆参数及坡度数据确定加速度模型参数;3)根据加速度模型参数预测当前时刻的加速度;4)基于预测的当前时刻的加速度预测下一时刻的车速;5)根据预测的下一时刻的车速预测当前时刻到下一时刻的行驶距离;6)通过高精度地图查找前方行驶距离处的道路坡度,基于查找的道路坡度及预测的下一时刻的车速预测下一时刻的加速度;7)重复步骤4)‑6)实现对空挡滑行过程的未来车速的预测。本发明基于车辆信息及高精度地图数据,确定加速度模型参数,进行空挡滑行过程中的车速预测,方法简单,预测的车速准确度高。
Neutral-gear coasting speed estimation method based on high-precision map
一种基于高精度地图的空挡滑行车速预估方法
15.09.2023
Patent
Elektronische Ressource
Chinesisch
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 |
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