[en] 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.
Kerschen, G., Poncelet, F., Golinval, J.C: Physical interpretation of independent component analysis in structural dynamics. Mechanical System and Signal Processing 21, 1561-1575 (2007)
Poncelet, F., Kerschen, G., Golinval, J.C., Verhelst, D.: Output-only modal analysis using blind source separation techniques. Mechanical Systems and Signal Processing. Corrected Proof. Available online (January 5, 2007) (in press)
Van Overschee, P., De Moor, B.: Subspace Identification for Linear Systems: Theory, Implementation, Applications. Kluwer Academic Publishers, Dordrecht (1996)
Ibrahim, S.R., Mikulcik, E.C.: A time domain modal vibration test technique. Shock and Vibration Bulletin 43, 21-37 (1973)
Peeters, B., Van Der Auweraer, H., Guillaume, P.: The PolyMAX frequency domain method: a new standard for modal parameter estimation. Shock and Vibration 11, 395-409 (2004)
Ewins, D.J.: Modal Testing: Theory, Practice and Application, 2nd edn. Research Studies Press LTD, Hertfordshire (2000)
Feeny, B.F., Kappagantu, R.: On the physical interpretatino of proper orthogonal modes in vibrations. Journal of Sound and Vibration 211, 607-616 (1998)
Kerschen, G., Golinval, J.C.: Physical interpretatino of the proper orthogonal modes using the singular value decompostion. Journal of Sound and Vibration 249, 849-865 (2002)
Chelidze, D., Zhou, W.: Smooth orthogonal decomposition-based vibration mode identification. Journal of Sound and Vibration 292, 461-473 (2006)
Comon, P.: ICA: a new concept? Signal Processing 36, 287-314 (1994)
Belouchrani, A., Abed-Meraim, K., Cardoso, J.F., Molines, E.: A BSS technique using 2nd-order statistics. IEEE Trans. on Signal Processing 45, 434-444 (1997)
James, G.H., Carne, T.G., Lauffer, J.P.: The natural excitation technique for modal parameter extraction from operating wind turbines. SAND92-1666 UC-261 (1993)
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