The invention relates to a working mode decision-making method and a device for a power split hybrid electric vehicle. The method comprises the following steps that (1) obtaining the latest working condition segment of a vehicle and the current state parameter of the vehicle; 2) obtaining a principal component score of the characteristic parameter of the latest working condition segment of the vehicle through a principal component analysis method, further calculating an Euclidean distance from the latest working condition segment to a preset clustering center of various working conditions, anddetermining a current driving working condition category; 3) normalizing the current state parameters of the vehicle by adopting the parameter normalization model of the corresponding category; and 4) loading the normalized parameters into the working mode decision sub-models of the corresponding types to decide a target working mode. Compared with the prior art, the influence of different working conditions is considered, the working mode decision sub-models under various working conditions are obtained through BP neural network training on the basis of the global optimal working mode decision sequence, solved through dynamic planning, under various typical working conditions, and the fuel economy of the automobile is improved.
本发明涉及一种功率分流混合动力汽车的工作模式决策方法和装置,方法包括以下步骤:1)获取车辆最新工况片段和车辆当前状态参数;2)通过主成分分析法得出车辆最新工况片段特征参数的主成分得分,进而计算最新工况片段到预设的各类工况聚类中心的欧氏距离,确定当前的行驶工况类别;3)采用对应类别的参数归一化模型,对车辆当前状态参数进行归一化处理;4)将归一化后的参数载入对应类别的工作模式决策子模型中,决策目标工作模式。与现有技术相比,本发明考虑到不同工况的影响,并基于动态规划所求解的各类典型工况下的全局最优工作模式决策序列,应用BP神经网络训练得出各类工况下的工作模式决策子模型,提高了汽车燃油经济性。
Working mode decision-making method and device for power split hybrid electric vehicle
一种功率分流混合动力汽车的工作模式决策方法和装置
2020-10-16
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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