The invention discloses a method for estimating a whole vehicle mass and a road slope of a pure electric vehicle, and belongs to the field of vehicle mass and road slope calculation. The method for estimating the whole vehicle mass and the road slope of the pure electric vehicle comprises the steps of 1) obtaining vehicle driving state information and vehicle parameters; 2) acquiring accelerationvalues of the vehicle in three directions; 3) establishing an estimation model of the vehicle mass and the slope by adopting a least square method with a dynamic forgetting factor for the data in thestep 1) and the step 2); utilizing Kalman filtering to establish a slope estimation model for the data in the step 1) and the step 2); 4) inputting the driving state information of the vehicle into the two estimation models to obtain real-time vehicle weight and two road slopes; and 5) substituting the two road slopes into a preset time factor by adopting a fusion algorithm, and outputting a finalroad slope. The algorithm overcomes defects that slope estimation in the prior art seriously depends on precision of a vehicle model and is greatly influenced by static errors of an acceleration sensor.

    本发明公开了一种纯电动车的整车质量和路面坡度的估算方法,属于车辆质量和道路坡度计算领域。一种纯电动车的整车质量和路面坡度的估算方法,包括:1)获取车辆行驶的状态信息及车辆参数;2)获取车辆三个方向的加速度值;3)将1)和2)的数据采用带动态遗忘因子的最小二乘法建立车辆质量及坡度的估计模型;将1)和2)的数据利用卡尔曼滤波建立坡度的估计模型;4)将车辆行驶的状态信息分别到输入两个估计模型中,得到实时车重和两个路面坡度;5)将两个路面坡度采用融合算法,带入预设的时间因子,输出的最终的路面坡度。本发明的算法克服现有技术坡度估计严重依赖于车辆模型精度且受加速度传感器静态误差影响较大的缺点。


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Method for estimating whole vehicle mass and road slope of pure electric vehicle


    Weitere Titelangaben:

    一种纯电动车的整车质量和路面坡度的估算方法


    Beteiligte:
    CUI XIAOLONG (Autor:in) / YAN JIANBO (Autor:in) / LIU YI (Autor:in) / ZANG TIAN (Autor:in) / WEN YUHANG (Autor:in) / YANG PENG (Autor:in) / WANG PENG (Autor:in) / FAN HAO (Autor:in) / SONG FENGWEI (Autor:in)

    Erscheinungsdatum :

    2020-10-23


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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



    APPARATUS AND METHOD ESTIMATING ROAD SLOPE OF VEHICLE

    JEONG DONGHOON / JEON BYEONGWOOK | Europäisches Patentamt | 2015

    Freier Zugriff

    Apparatus And Method Estimating Road Slope Of Vehicle

    JEONG DONGHOON / JEON BYEONGWOO | Europäisches Patentamt | 2015

    Freier Zugriff

    Apparatus and method estimating road slope of vehicle

    JEONG DONGHOON / JEON BYEONGWOOK | Europäisches Patentamt | 2016

    Freier Zugriff

    APPARATUS AND METHOD FOR ESTIMATING POSITION OF VEHICLE USING ROAD SLOPE

    YEE JONG YOON / KIM TAE HONG / KIM HYUN WOO | Europäisches Patentamt | 2019

    Freier Zugriff

    Method for estimating road gradient of pure electric vehicle based on gating circulation unit

    CHEN YANLIN / ZHU ZONGKAI / LI JIAQIANG et al. | Europäisches Patentamt | 2023

    Freier Zugriff