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Shock and Vibration - Volume20152015, Article ID124932, 10 pages -

Research ArticleInstitute FEMTO-ST, UMR 6174, Department of Applied Mechanics DMA, University of Franche-Comt, 25 000 Besanon, France

Received 1 February 2015; Revised 15 April 2015; Accepted 27 April 2015

Academic Editor: MarcThomas

Copyright 2015 Joseph Lardies. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The problem of modal parameter identification from output data only is presented. To identify the modal parameters different algorithms are presented: the block Hankel matrix and its shifted version and the block observability and block controllability matrices and their shifted version. These algorithms are derived from properties of the subspace approach. It is shown in the paper that these algorithms give the same results even in the noisy data case. Numerical and experimental results are presented showing the effectiveness of the procedure. In particular a microsystem constituted of a perforated microplate is analysed.

Autor: Joseph Lardies



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