000004900 001__ 4900
000004900 005__ 20141119144603.0
000004900 04107 $$aeng
000004900 046__ $$k2002-06-02
000004900 100__ $$aKijewski, Tracy L.
000004900 24500 $$aWAVELET TRANSFORMS FOR SYSTEM IDENTIFICATION AND ASSOCIATED PROCESSING CONCERNS

000004900 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004900 260__ $$bColumbia University in the City of New York
000004900 506__ $$arestricted
000004900 520__ $$2eng$$aThe time-frequency character of wavelet transforms allows increased flexibility – as both traditional time and frequency domain system identification approaches can be adapted to examine non-linear and non-stationary response data. However, a number of additional processing concerns must be understood to fully exploit the power of the multi-resolution, dual-domain transform, particularly for the popular Morlet wavelet. Unfortunately, in prior applications of wavelet transforms for system identification, the implications of the aforementioned concerns were often negligible, as these studies considered mechanical systems characterized by higher frequency, broader-band signals. It was the subsequent analysis of Civil Engineering structures that highlighted the need to understand more fully these processing concerns in order to insure the successful identification of dynamic system properties. This study identifies a number of these considerations that are a direct consequence of the wavelet’s multi-resolution character, including considerations for selection of wavelet central frequencies and strategies to resolve end effects errors. In total, this study serves as an overview of these processing considerations for Civil Engineering structures, helping to lessen the challenges associated with the transition into the time-frequency domain.

000004900 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004900 653__ $$awavelet transforms, Morlet wavelet, system identification, time-frequency analysis

000004900 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004900 720__ $$aKijewski, Tracy L.$$iKareem, Ahsan
000004900 8560_ $$ffischerc@itam.cas.cz
000004900 8564_ $$s668622$$uhttp://invenio.itam.cas.cz/record/4900/files/515.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004900 962__ $$r4594
000004900 980__ $$aPAPER