This paper presents an approach to the synthesis of compressed vibration test profiles representing much longer time histories obtained in road testing of ground vehicles. Vibration test profiles are defined as those related directly to operational testing on specific road surfaces and which summarize the input to the vehicle in the given conditions. The method extends the classical Fourier transform technique by means of bump event correction in the background Fourier signal where the bump event term implies a high amplitude transient event of the shock type. The orthogonal wavelet decomposition was used as a specific filtering tool facilitating bump event identification. Examples of seat guide vertical acceleration have been considered. Calculated probability density functions suggest the ability of the bump correction method to improve the statistical accuracy of the final vibration test profile with respect to the original road data. Test profiles obtained by means of Fourier transform synthesis with subsequent re-insertion of bump events from separated frequency bands were more accurate than those obtained by Fourier synthesis alone. Further developments led to advanced bump re-insertion with synchronization of events occurring in different frequency bands at the same moment of time. Test profiles generated in this way have provided better accuracy compared with the non-synchronized algorithm.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    On the need for bump event correction in vibration test profiles representing road excitations in automobiles


    Beteiligte:
    Steinwolf, A (Autor:in) / Giacomin, J A (Autor:in) / Staszewski, W J (Autor:in)


    Erscheinungsdatum :

    2002-04-01


    Format / Umfang :

    17 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






    On the need for bump event correction on vibration test profiles representing road excitation on automobiles

    Steinwolf,A. / Giacomin,J.A. / Staszewski,W.J. et al. | Kraftfahrwesen | 2002


    high-sensitive air vent for automobiles with vertical wing bump

    LIM SUNG BIN / SHIN DONG WOO | Europäisches Patentamt | 2018

    Freier Zugriff

    Vibration in automobiles

    Rausch, E. | Engineering Index Backfile | 1935