The problem of multi-channel output-only identification of the time-varying dynamics of an extendable prismatic arm structure under random excitation is considered. The identification is based on three simultaneously measured non-stationary vibration response signals obtained during a single experiment in which the arm extends from its fully retracted to its fully extended position. Non-stationary Functional Series Vector Time-dependent AutoRegressive (FS-VTAR) and AutoRegressive Moving Average (FS-VTARMA) methods are used, while critical comparisons with corresponding Pseudo-Linear Regression (PLR-VTAR and PLR-VTARMA) methods employing recursive models are also made. The superiority of the Functional Series methods, and particularly of the FS-VTARMA method, in capturing the time-varying dynamics is demonstrated.


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    Titel :

    Multi-channel output-only identification of an extendable arm structure under random excitation: A comparison of parametric methods


    Beteiligte:


    Erscheinungsdatum :

    2009-06-01


    Format / Umfang :

    2027571 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    EXTENDABLE STRUCTURE

    SLADE RICHARD PAUL | Europäisches Patentamt | 2017

    Freier Zugriff

    Extendable structure

    SLADE RICHARD PAUL | Europäisches Patentamt | 2017

    Freier Zugriff