The paper presents results of vibro-acoustic signal analysis (acceleration of the unsprung mass of passenger’s car suspension actuated to vibration by harmonic, kinematic vibration). The range of research has included front shock absorber for Fiat Seicento with simulated fault (oil leak). Force process consisted of three phases: increase of frequency, vibration with constant frequency (above 21 Hz) and decreases of frequency.For the analysis process Short Time Fourier Transform method was used with superposition of rectangles window and with zero complement method. On STFT spectrum resonance frequency of unsprung mass was identified. The estimator was the means of maximum acceleration amplitude peak in frequency band round resonance frequency. The result of investigation was presented on diagrams with changeable value of estimator for different technical conditions of shock absorber (with different volume of oil inside the shock absorber)


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Usage of short time Fourier transform in identification of vehicle shock absorber technical conditions researched by force vibration method


    Beteiligte:


    Erscheinungsdatum :

    2009



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




    VEHICLE WITH FORCE-CONTROLLED SHOCK ABSORBER (2-PIPE SHOCK ABSORBER)

    HALLER ERWIN | Europäisches Patentamt | 2016

    Freier Zugriff

    Vehicle with force-controlled shock absorber (2-pipe shock absorber)

    HALLER ERWIN | Europäisches Patentamt | 2018

    Freier Zugriff

    DAMPING FORCE ADJUSTABLE SHOCK ABSORBER SHOCK ABSORBER CONTROL SYSTEM OF VEHICLE AND VEHICLE

    JO HWI SANG / JANG YO HAN / LIM BYEONG WOO et al. | Europäisches Patentamt | 2022

    Freier Zugriff

    DAMPING FORCE ADJUSTABLE SHOCK ABSORBER SHOCK ABSORBER CONTROL SYSTEM OF VEHICLE AND VEHICLE

    JO HWI SANG / JANG YO HAN / LIM BYEONG WOO et al. | Europäisches Patentamt | 2022

    Freier Zugriff

    DAMPING FORCE ADJUSTABLE SHOCK ABSORBER SHOCK ABSORBER CONTROL SYSTEM OF VEHICLE AND VEHICLE

    JO HWI SANG / JANG YO HAN / LIM BYEONG WOO et al. | Europäisches Patentamt | 2022

    Freier Zugriff