METHOD OF CALCULATING FLEXURE AMOUNT AT ROLLING OF TIRE, METHOD OF ACCUMULATING DATA AT ROLLING OF TIRE, AND METHOD OF CALCULATING GROUND CONTACT LENGTH AT ROLLING OF TIRE

摘要

PPROBLEM TO BE SOLVED: To calculate flexure amount of tire during traveling by high-speed data processing, on the basis of measurement time series data of acceleration of a tire tread part. PSOLUTION: The method includes an acquisition step for acquiring the measurement time series data of acceleration of on a tire circumference, in the radial direction of the tire during rolling; a least square regression step for extracting acceleration data from the acquired measurement time series data on the tire circumference near the ground contact and determining a parameter value of a flexure function, by performing the least square regression of the acceleration data using a two-stage differential function of the flexure function, having one extreme and expressing a peak shape having a curve approaching zero at both sides thereof; and a calculation step for calculating the ground contact flexure amount from the flexure function determined by using the parameter values of the flexure function. PCOPYRIGHT: (C)2008,JPO&INPIT