The invention provides a mode prediction method for hybrid electric vehicle power system coordination control. The mode prediction method comprises the following steps that a control strategy model based on model prediction control is established according to the power system configuration of a hybrid electric vehicle; establishing an LSTM neural network prediction model of the vehicle demand torque, the vehicle speed and the battery SOC based on an LSTM neural network; inputting the current driving historical data of the hybrid electric vehicle into an LSTM neural network prediction model, and outputting predicted values of the demand torque, the vehicle speed and the battery SOC of the hybrid electric vehicle after a preset time period through the LSTM neural network prediction model; and the control strategy model judges a mode that the hybrid electric vehicle is about to enter according to the predicted values and controls the hybrid electric vehicle to perform mode switching when the predicted values of the required torque, the vehicle speed and the battery SOC reach mode switching conditions. On the basis of power source coordination control, mode switching can be predicted, mode switching can be conducted in advance, the switching time is prolonged, and therefore the purpose of reducing the impact degree is achieved.

    本发明提供一种混合动力汽车动力系统协调控制的模式预测方法,包括以下步骤:针对混合动力汽车的动力系统构型建立以模型预测控制为基础的控制策略模型;基于LSTM神经网络建立整车需求扭矩、车速和电池SOC的LSTM神经网络预测模型;将混合动力汽车当前行驶的历史数据输入LSTM神经网络预测模型,通过LSTM神经网络预测模型输出混合动力汽车预定时间段后的需求扭矩、车速和电池SOC的预测值;控制策略模型根据预测值判断混合动力汽车将要进入的模式并在需求扭矩、车速和电池SOC的预测值达到模式切换条件时控制混合动力汽车进行模式切换。其能够在动力源协调控制的基础上预测切换模式并提前进行模式切换,延长切换时间,从而达到减小冲击度的目的。


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    Title :

    Mode prediction system and method for coordinated control of power system of hybrid electric vehicle


    Additional title:

    混合动力汽车动力系统协调控制的模式预测系统及方法


    Contributors:
    GUAN WEILAI (author) / YANG RONG (author) / WANG KUNYU (author) / HUANG JUNMING (author) / HUANG WEI (author) / WEI TANGSHOU (author)

    Publication date :

    2022-07-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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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