In this paper, a local method of structure-borne noise source characterization is presented. It is based on measurements of transverse displacement and local structural operator knowledge and allows to localize and quantify sources without any need of boundary condition information. To fix the instability caused by measurement noise, the regularization step inherent to inverse problem is realized with a probabilistic approach, within the Bayesian framework. When a priori distributions about noise and sources are considered as Gaussian, the Bayesian regularization is equivalent to the well-known Tikhonov regularization. The optimization of the regularization is then performed by the Gibbs Sampling (GS) algorithm, which is part of Markov Chain Monte Carlo (MCMC) techniques. The whole probability of the regularized solution is inferred, providing access to confidence intervals. Both simulation and measurements of a beam excited by an harmonic point source are realized to validate this approach.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Structure-Borne Noise Source Characterization from a Bayesian Point of View


    Weitere Titelangaben:

    Sae International Journal of Passenger Cars. Mechanical Systems
    Sae Int. J. Passeng. Cars - Mech. Syst


    Beteiligte:

    Kongress:

    9th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference ; 2016



    Erscheinungsdatum :

    2016-06-15


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Structure-Borne Shock Absorber Noise: Non-Linear Noise Source Characterization in a Laboratory Environment

    Van Haver, J. / Society of Automotive Engineers | British Library Conference Proceedings | 1995




    Structure Borne Noise Prediction Techniques

    Kuipers, Geert / Priebsch, Hans H. / Affenzeller, Josef | SAE Technical Papers | 1990


    Structure borne noise prediction techniques

    Priebsch,H.H. / Affenzeller,J. / Kuipers,G. et al. | Kraftfahrwesen | 1990