Study on Global-Piecewise Fitting for Modal Parameter Identification

Article Preview

Abstract:

Based on the global orthogonal polynomial algorithm, a global-piecewise fitting method for eliminating affections of modes outside of fitting bands is proposed. Both lower and higher modes outside of the fitting band are analyzed and processed. The frequency response data are revised by means of modes in two frequency bands close to the fitting band, and a curve fitting model is derived. Simulation results indicate that the proposed method possesses higher precision than the general rational fraction polynomial algorithm.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

2386-2389

Citation:

Online since:

September 2014

Authors:

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] N. Barbieri, P.R. Novak and R. Barbieri: Intern. J. of Solids and Struc Vol. 41(2004), p.3585.

Google Scholar

[2] M. H. Richardson, D. L, Formenti: Proc. of the 1th IMAC (1982), p.167.

Google Scholar

[3] M.H. Richardson: Proc. of the 4th IMAC (1982), p.465.

Google Scholar

[4] W. Peng, J.X. Yuan: J. of Dyna. Analy. and Tech. of Meas. and Test Vol. 3(1988), p.1.

Google Scholar

[5] M.I. Friswell, J E Penny: Modal Analysis Vol. 8(1993), p.257.

Google Scholar