DATA PROCESSING METHOD, ESTIMATION METHOD OF TIRE, EVALUATION METHOD OF VIBRATION RIDE COMFORT PERFORMANCE, AND DATA PROCESSING DEVICE

PROBLEM TO BE SOLVED: To calculate a characteristic parameter in a tire input from the vibration of a tire axial force generated during passage of an upper step on the road surface and a vibration transmission characteristic of the tire in a characteristic parameter.SOLUTION: Provisional input data...

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1. Verfasser: MIYASHITA NAOSHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To calculate a characteristic parameter in a tire input from the vibration of a tire axial force generated during passage of an upper step on the road surface and a vibration transmission characteristic of the tire in a characteristic parameter.SOLUTION: Provisional input data of a tire input is calculated using a provisional value of the characteristic parameter of the set vibration transmission characteristic H from measurement data of a tire axial force O. Next, among the calculated provisional input data, corrected provisional input data causing the value of the data before and after the tire passes the step to be zero and the corrected provisional data correcting the provisional value of the characteristic parameter of the vibration transmission characteristic H are calculated. The corrected provisional value among the provisional input data is set as the provisional value of the characteristic parameter and the calculation of the provisional input data and the calculation of the provisional value of the characteristic parameter are repeatedly performed until the value of the data before and after the tire passes the step is converged to zero. Thus, the converted input data of the tire input I and the converged value of the characteristic parameter are obtained.SELECTED DRAWING: Figure 2 【課題】路面上の段差を通過するときに生じるタイヤ軸力の振動からタイヤ入力及びタイヤの振動伝達特性における特性パラメータを算出する。【解決手段】タイヤ軸力Oの計測データから、設定された振動伝達特性Hの特性パラメータの仮値を用いて、タイヤ入力Iの仮入力データを算出する。次に、算出した仮入力データのうち、タイヤが段差を通過する前後のデータの値を0にした修正仮入力データとタイヤ軸力Oの計測データから、前記振動伝達特性Hの特性パラメータの仮値を修正した修正仮値を算出する。前記仮入力データのうち前記タイヤが前記段差を通過する前後のデータの値が0に収束するまで、前記修正仮値を、前記特性パラメータの前記仮値として設定して仮入力データの算出と特性パラメータの仮値の算出を繰り返し行うことにより、前記タイヤ入力Iの収束入力データ及び前記特性パラメータの収束値を求める。【選択図】図2