The invention discloses a pure electric vehicle speed calculation method and system, and the method comprises the steps: obtaining a plurality of types of driving parameters of a target vehicle in a current driving state after filtering processing, and calculating the wheel acceleration of the target vehicle according to the plurality of types of driving parameters; judging predicted wheel states of the target vehicle according to the various driving parameters and the wheel acceleration, and calculating corresponding estimated speeds according to different predicted wheel states; according to the various driving parameters and the wheel acceleration, the actual wheel state of the target vehicle is judged, and the wheel mapping vehicle speed is calculated according to the different actual wheel states; calculating a reference vehicle speed of the target vehicle according to the mapping vehicle speed; by calculating the estimated speeds of the wheels in different states such as slipping and braking locking, the speed of the target vehicle can be accurately estimated under complex working conditions such as slipping and braking locking of the vehicle.

    本发明公开了一种纯电动汽车车速计算方法及系统,所述方法包括,获取目标车辆当前行驶状态下的经过滤波处理后的多种行驶参数,以根据所述多种行驶参数计算所述目标车辆的车轮加速度;根据所述多种行驶参数和所述车轮加速度判断所述目标车辆预计车轮状态,并根据不同的所述预计车轮状态计算对应的估计速度;根据所述多种行驶参数和所述车轮加速度判断所述目标车辆实际车轮状态,并根据不同的所述实际车轮状态计算车轮映射车速;根据所述映射车速计算所述目标车辆的参考车速;通过对车轮在打滑和制动抱死等不同状态下的估计速度计算,实现车辆打滑和制动抱死等复杂工况下准确估算出目标车辆的车速。


    Access

    Download


    Export, share and cite



    Title :

    Vehicle speed calculation method and system for pure electric vehicle


    Additional title:

    一种纯电动汽车车速计算方法及系统


    Contributors:
    ZHANG WEIPING (author) / ZHANG XIULONG (author) / HU SONGHUA (author) / YOU DAOLIANG (author)

    Publication date :

    2024-05-03


    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



    Two-speed pure electric sanitation vehicle power system and pure electric sanitation vehicle

    LIU CHAOFAN / YAN BEIZHAN / DENG WEI et al. | European Patent Office | 2020

    Free access

    Pure electric vehicle power system, pure electric vehicle and control method

    CHE XIANDA / LIU JIANKANG / WANG YAN et al. | European Patent Office | 2021

    Free access

    Pure electric vehicle power system, pure electric vehicle and control method

    CHE XIANDA / LIU JIANKANG / WANG YAN | European Patent Office | 2021

    Free access

    Pure electric vehicle transmission system control method and pure electric vehicle

    ZHAI YUNLING / LI SEN / CHEN GUOTAO et al. | European Patent Office | 2023

    Free access

    Pure electric vehicle driving range calculation method, vehicle and electronic equipment

    LUO DONG / LYU JIANWU / XIE YU et al. | European Patent Office | 2021

    Free access