To provide a technology that is able to detect a change in suspension property based on various factors despite a simple configuration.SOLUTION: An extraction unit 13 extracts a plurality of resonance frequency band components for each of a vehicle acceleration waveform and a wheel acceleration waveform (Step S3). An analysis unit 14 conducts frequency analysis for a waveform of each extracted resonance frequency band component (Step S4). Based on a frequency analysis result, a calculation unit 15 calculates a damage value D (Step S5). A detection unit 16 detects whether each damage value D is within a predetermined range or not (Step S6). When determining that each damage value D is out of the predetermined range, the detection unit 16 detects a variation tendency of each damage value D (Step S7).SELECTED DRAWING: Figure 8

    【課題】簡易な構成でありながら、様々な要因に基づくサスペンション特性の変化を検出することが可能な技術を提供する。【解決手段】抽出部13は、車両加速度波形、及び車輪加速度波形加速度波形のそれぞれについて、複数の共振周波数帯成分を抽出する(ステップS3)。解析部14は、抽出された各共振周波数帯成分の波形について、頻度解析を行う(ステップS4)。算出部15は、頻度解析結果をもとに、ダメージ値Dを算出する(ステップS5)。検出部16は、各ダメージ値Dが一定範囲に入っているか否かを検出する(ステップS6)。検出部16は、各ダメージ値Dが一定範囲から外れていると判断すると、各ダメージ値Dの変動傾向を検出する(ステップS7)。【選択図】図8


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    Title :

    SUSPENSION PROPERTY CHANGE DETECTION DEVICE


    Additional title:

    サスペンション特性変化検出装置


    Contributors:

    Publication date :

    2021-08-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge



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