A tire load estimation device includes: acceleration sensors 11 each disposed on each tire; a total vehicle weight calculating means 12; an acceleration waveform extracting means 13 that detects, for each tire, an acceleration waveform in a tire radial direction from an output signal of each of the acceleration sensors 11; a differential acceleration waveform calculating means 14 that obtains a differential acceleration waveform of the acceleration waveform; a peak position detecting means 15 that detects a peak position on a leading edge side and a peak position on a trailing edge side in the differential acceleration waveform; a ground contact time ratio calculating means 16 that calculates a ground contact time and a rotation time from the peak positions to calculate a ground contact time ratio which is a ratio between the ground contact time and the rotation time; and a lord estimating means 17 that estimates the load acting on the tire from the ground contact time ratio of each tire, a maximum load capability of the tire, the total vehicle weight, and an inclination obtained in advance by approximating a maximum load capability ratio, which is a value obtained by normalizing the load with the maximum load capability, with a linear function of the ground contact time ratio.


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    Title :

    TIRE LOAD ESTIMATION METHOD AND TIRE LOAD ESTIMATION DEVICE


    Additional title:

    VERFAHREN ZUR KALKULATION DER REIFENLAST UND VORRICHTUNG ZUR KALKULATION DER REIFENLAST
    PROCÉDÉ D'ESTIMATION DE CHARGE DE PNEU ET DISPOSITIF D'ESTIMATION DE CHARGE DE PNEU


    Contributors:

    Publication date :

    2022-06-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE / B60C VEHICLE TYRES , Fahrzeugreifen



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