The invention discloses a pavement adhesion coefficient estimation method and device. The method comprises the steps that the longitudinal allowable acceleration and the transverse allowable acceleration of a whole vehicle are determined according to state parameters of all tires of the vehicle; the longitudinal acceleration and the transverse acceleration of the whole vehicle are obtained through an accelerometer; a longitudinal acceleration difference value and a transverse acceleration difference value are determined according to the longitudinal acceleration, the longitudinal allowable acceleration, the transverse acceleration and the transverse allowable acceleration; and the yaw angle difference value, the steering wheel angle, the reference vehicle speed of the whole vehicle, the longitudinal acceleration difference value and the transverse acceleration difference value are input into a pre-established support vector regression machine model assembly, and a road adhesion coefficient is output. The support vector regression machine prediction model is trained on the basis of the vehicle motion parameter data, and the model is used for predicting the pavement adhesion coefficient in real time, so that torque control during vehicle driving is facilitated, and the dynamic property and stability of the vehicle are improved.

    本发明公开了一种路面附着系数估算方法及装置,包括:根据车辆各个轮胎的状态参数确定整车的纵向允许加速度和横向允许加速度;通过加速度计获取整车的纵向加速度和横向加速度;根据所述纵向加速度、所述纵向允许加速度、所述横向加速度和所述横向允许加速度确定纵向加速度差值和横向加速度差值;将横摆角差值、方向盘转角、整车参考车速、所述纵向加速度差值和所述横向加速度差值输入预先建立的支持向量回归机模型组件中,输出路面附着系数。本发明基于车辆运动参数数据训练支持向量回归机预测模型,并用该模型实时预测路面附着系数,便于车辆行驶时的扭矩控制,提高车辆的动力性与稳定性。


    Access

    Download


    Export, share and cite



    Title :

    Pavement adhesion coefficient estimation method and device


    Additional title:

    一种路面附着系数估算方法及装置


    Contributors:
    DING SHAOBING (author) / YAN ZHONGYI (author) / ZHANG DANG (author) / LIU GUORUI (author) / ZHANG ZHIGANG (author)

    Publication date :

    2021-04-16


    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



    Pavement adhesion coefficient estimation method based on Bayes classifier

    ZHAO CHAOCHAO | European Patent Office | 2021

    Free access

    Centroid slip angle estimation method considering dynamic load and pavement adhesion coefficient

    ZHANG QIAN / ZHOU HONGLIANG / LIU ZHIYUAN | European Patent Office | 2020

    Free access

    Device and method for measuring pavement adhesion coefficient based on pavement texture features

    LU YONGJIE / LIU JINGXU / HAN YINFENG et al. | European Patent Office | 2022

    Free access

    Pavement peak adhesion coefficient detection method and device and electronic equipment

    LI QIN / LIU ZHIFENG | European Patent Office | 2021

    Free access

    Pavement adhesion coefficient determination method and device based on Kalman filtering

    KONG LINGXING / ZHAI XIAOYAN / QIN TAO et al. | European Patent Office | 2024

    Free access