The invention provides a vehicle driving condition construction method. The method comprises the following steps: S1, building a training sample set, wherein the training sample set comprises a plurality of training samples, and each training sample comprises a target vehicle speed value and a driving characteristic variable corresponding to the target vehicle speed value; s2, providing a vehicle driving condition construction model, wherein the vehicle driving condition construction model is a machine learning model constructed according to an XGboost algorithm; s3, training the vehicle driving condition construction model by using the training sample set, so that when the vehicle driving condition construction model receives a driving characteristic variable, the difference between a result vehicle speed value output by the vehicle driving condition construction model and a target vehicle speed value is minimum; S4, acquiring a driving characteristic variable of the target vehicle; inputting the driving characteristic variable of the target vehicle into the trained vehicle driving condition to construct a model, and obtaining a result vehicle speed value of the target vehicle; and establishing a working condition curve of the target vehicle according to the change of the result vehicle speed value of the target vehicle. According to the invention, an XGBoost algorithm is adopted to construct a machine learning model, and a working condition curve of a target vehicle is established through the machine learning model; errors of working condition curves can be reduced, and the precision of the working condition curves is improved.
本发明提供一种车辆行驶工况构建方法。该方法包括如下步骤:步骤S1、建立训练样本集,所述训练样本集包括:多个训练样本,每一个训练样本均包括一目标车速值及与所述目标车速值对应行驶特征变量;步骤S2、提供一车辆行驶工况构建模型,所述车辆行驶工况构建模型为依据XGboost算法构建的机器学习模型;步骤S3、利用所述训练样本集对所述车辆行驶工况构建模型进行训练,使得所述车辆行驶工况构建模型接收到行驶特征变量时,其输出的结果车速值与目标车速值的差异最小;步骤S4、获取目标车辆的行驶特征变量,将目标车辆的行驶特征变量输入训练后的车辆行驶工况构建模型,得到目标车辆的结果车速值,并依据目标车辆的结果车速值的变化的建立目标车辆的工况曲线,本发明采用XGBoost算法构建机器学习模型,并通过机器学习模型建立目标车辆的工况曲线,能够减小工况曲线的误差,提升工况曲线的精度。
Vehicle driving condition construction method
车辆行驶工况构建方法
2021-11-05
Patent
Electronic Resource
Chinese
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