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.
TIRE LOAD ESTIMATION METHOD AND TIRE LOAD ESTIMATION DEVICE
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
2022-06-15
Patent
Electronic Resource
English
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