A method of determining a road surface condition includes: acquiring, when determining a condition of a road surface being in contact with a tire from a time-varying waveform of vibration of the running tire, the time-varying waveform of vibration having been detected by a vibration detecting means, a plurality of intrinsic vibration modes, from data of the time-varying waveform of vibration of the tire, using an algorithm of empirical mode decomposition; selecting an arbitrary intrinsic vibration mode from the plurality of intrinsic vibration modes; calculating a statistic amount from the distribution of feature data calculated by performing Hilbert transform on the selected intrinsic vibration mode to set the statistic amount as a feature amount; and determining the road surface condition from the feature amount and a feature amount obtained in advance for each road surface condition.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Road surface condition determination method and road surface condition determination apparatus


    Beteiligte:
    ISHII KEITA (Autor:in)

    Erscheinungsdatum :

    01.11.2022


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / B60C VEHICLE TYRES , Fahrzeugreifen






    ROAD SURFACE CONDITION DETERMINATION METHOD AND ROAD SURFACE CONDITION DETERMINATION DEVICE

    ISHII KEITA / MASAGO TAKESHI / GOTO TAKATO | Europäisches Patentamt | 2019

    Freier Zugriff

    ROAD SURFACE CONDITION DETERMINATION METHOD AND ROAD SURFACE CONDITION DETERMINATION DEVICE

    MASAGO TAKESHI / ISHII KEITA | Europäisches Patentamt | 2019

    Freier Zugriff