In order to provide a method for efficiently estimating a degree of wear of a tire, a tire wear estimation method is provided in which a normalized deformation speed index is set as a wear measure, the normalized deformation speed index being obtained by normalizing, by a rotation time of the tire, an index of a deformation speed near an edge of a tire contact patch, the index being calculated from magnitudes of peaks appearing in a radial acceleration waveform obtained by differentiating tire radial acceleration detected by an acceleration sensor,; and the degree of wear of the tire is estimated using the wear measure and a ground contact time ratio which is a ratio of a ground contact time with respect to the rotation time, in which the degree of wear of the tire is estimated using the wear measure, the ground contact time ratio, a worn tire approximate formula and an approximate formula when a tire is new, which have been obtained in advance and each represents a relationship between the wear measure and the ground contact time ratio obtained by running a plurality of tires having tire sizes different from each other.
TIRE WEAR ESTIMATION METHOD
VERFAHREN ZUR SCHÄTZUNG DES REIFENVERSCHLEISSES
PROCÉDÉ D'ESTIMATION D'USURE DE PNEU
06.03.2024
Patent
Elektronische Ressource
Englisch
IPC: | G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B60C VEHICLE TYRES , Fahrzeugreifen |
TIRE WEAR ESTIMATION SYSTEM, TIRE WEAR ESTIMATION PROGRAM, AND TIRE WEAR ESTIMATION METHOD
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