On the use of consistent and significant information to reduce ill-conditioning in dynamic model updating

D'Ambrogio, W.; Fregolent, Annalisa

doi:10.1006/mssp.1997.0141

A dynamic model updating technique, force residual updating-interactive technique (FRU-IT), is described. The technique is based on minimisation of the force (input) residual. Like most parametric identification problems, dynamic model updating is affected strongly by measurement errors due to the ill-conditioning of the problem. The proposed method is used to define and solve the set of updating equations in order to minimise the influence of measurement errors. This includes the selection of experimental degrees of freedom to ensure data consistency, the choice of the working frequencies to pursue data significance, and the use of regularisation techniques; specifically, an interactive use is made of the truncated singular value decomposition. The performance of the method is demonstrated by test cases.

On the use of consistent and significant information to reduce ill-conditioning in dynamic model updating / W., D'Ambrogio; Fregolent, Annalisa. - In: MECHANICAL SYSTEMS AND SIGNAL PROCESSING. - ISSN 0888-3270. - STAMPA. - 12:1(1998), pp. 203-222. [10.1006/mssp.1997.0141]

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Titolo:	On the use of consistent and significant information to reduce ill-conditioning in dynamic model updating
Autori:	W. D'Ambrogio FREGOLENT, Annalisa mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	1998
Rivista:	MECHANICAL SYSTEMS AND SIGNAL PROCESSING
Citazione:	On the use of consistent and significant information to reduce ill-conditioning in dynamic model updating / W., D'Ambrogio; Fregolent, Annalisa. - In: MECHANICAL SYSTEMS AND SIGNAL PROCESSING. - ISSN 0888-3270. - STAMPA. - 12:1(1998), pp. 203-222. [10.1006/mssp.1997.0141]
Handle:	http://hdl.handle.net/11573/46121
Appartiene alla tipologia:	01a Articolo in rivista

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