System identification in structural dynamics using blind source separation techniques

Authors:
F. Poncelet;G. Kerschen;J. C. Golinval;F. Marin
Affiliations:
Aerospace and Mechanical Engineering Department, LTAS, University of Liège, Liège, Belgium;Aerospace and Mechanical Engineering Department, LTAS, University of Liège, Liège, Belgium;Aerospace and Mechanical Engineering Department, LTAS, University of Liège, Liège, Belgium;V2i S.A., Liège, Belgium
Venue:
ICA'07 Proceedings of the 7th international conference on Independent component analysis and signal separation
Year:
2007

Citing 2
Cited 0

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Abstract

This paper proposes to explore the potential of Blind Source Separation (BSS) techniques for the estimation of modal parameters, namely the resonant frequencies, vibration modes and damping ratios. The concept of virtual sources, which was introduced in recent publications, allows to consider BSS as a simple way of doing output-only modal analysis. This work illustrates the proposed methodology using free and random responses of an experimental truss structure.