To provide a technique for accurately estimating the resonant frequency of a tire.SOLUTION: A monitoring device comprises an acquisition unit, an estimation unit, a filtering unit, and a correction unit. The acquisition unit acquires, during running of a vehicle, time-series data representing rotation information of a tire mounted on the vehicle. The estimation unit derives an estimated resonant frequency in which the resonant frequency of the tire is estimated on the basis of the time-series data. The filtering unit extracts frequency components of the given frequency bandwidth around the resonant frequency of the tire by passing the time-series data through a variable bandpass filter, or removes from the time-series data the frequency components of the given frequency bandwidth around the resonant frequency of the tire by passing the time-series data through the variable band stop filter. The correction unit corrects the estimated resonant frequency on the basis of a spectral area of the time-series data in the given frequency bandwidth.SELECTED DRAWING: Figure 3

    【課題】タイヤの共振周波数を精度よく推定する技術を提供する。【解決手段】モニタリング装置は、取得部と、推定部と、フィルタリング部と、補正部とを備える。取得部は、車両に装着されるタイヤの回転情報を表す時系列のデータを、車両の走行中に取得する。推定部は、時系列のデータに基づき、タイヤの共振周波数を推定した推定共振周波数を導出する。フィルタリング部は、時系列のデータを可変バンドパスフィルタに通すことにより、タイヤの共振周波数付近の所定の周波数帯域の周波数成分を時系列のデータから抽出する、または、時系列のデータを可変バンドストップフィルタに通すことにより、タイヤの共振周波数付近の所定の周波数帯域の周波数成分を時系列のデータから除去する。補正部は、所定の周波数帯域における時系列のデータのスペクトルの面積に基づいて、推定共振周波数を補正する。【選択図】図3


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    Title :

    MONITORING DEVICE FOR CONDITION OF RUNNING VEHICLE


    Additional title:

    走行中の車両の状態のモニタリング装置


    Contributors:

    Publication date :

    2024-10-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen




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