A time-series waveform of tire vibration detected by an acceleration sensor is windowed by a windowing means, time-series waveforms of the tire vibration are extracted for respective time windows, and feature vectors of the respective time windows are calculated. Then kernel functions are calculated from the feature vectors of the respective time windows and road surface feature vectors, which are the feature vectors for the respective time windows calculated from the time-series waveform of the tire vibration obtained for distinctive road surface conditions calculated in advance. And the road surface condition is determined by comparing values of discriminant functions using the kernel functions. As a result, the road surface condition can be determined from the time-series waveform of the tire vibration without detecting peak positions or measuring the wheel speed. Moreover, robustness against changes in tire size can be added to the determination of the road surface condition.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    METHOD AND DEVICE FOR DETERMINING STATE OF ROAD SURFACE


    Weitere Titelangaben:

    VERFAHREN UND VORRICHTUNG ZUM BESTIMMEN DES ZUSTANDS EINER STRASSENOBERFLÄCHE
    PROCÉDÉ ET DISPOSITIF POUR DÉTERMINER UN ÉTAT DE SURFACE DE ROUTE


    Beteiligte:
    HANATSUKA YASUSHI (Autor:in) / HIGUCHI TOMOYUKI (Autor:in) / MATSUI TOMOKO (Autor:in)

    Erscheinungsdatum :

    2018-12-05


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    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 / B60C VEHICLE TYRES , Fahrzeugreifen / G01W METEOROLOGY , Meteorologie



    ROAD SURFACE STATE DETERMINING DEVICE

    TAKASUKA NAOHITO / SUZUKI YOICHIRO / SEKIZAWA TAKATOSHI | Europäisches Patentamt | 2019

    Freier Zugriff

    ROAD SURFACE CONDITION DETERMINING METHOD AND ROAD SURFACE CONDITION DETERMINING DEVICE

    ISHII KEITA | Europäisches Patentamt | 2021

    Freier Zugriff

    METHOD FOR DETERMINING STATE OF ROAD SURFACE

    MAEDA YUSUKE | Europäisches Patentamt | 2022

    Freier Zugriff

    METHOD AND DEVICE FOR DETERMINING STATE OF ROAD SURFACE

    HANATSUKA YASUSHI / GOTO TAKAHITO | Europäisches Patentamt | 2018

    Freier Zugriff

    ROAD SURFACE CONDITION DETERMINING METHOD AND ROAD SURFACE CONDITION DETERMINING DEVICE

    ISHII KEITA | Europäisches Patentamt | 2018

    Freier Zugriff