標題: | Applying Time-Frequency Analysis on Earthquake Inputs and Structure Responses |
作者: | Huang, Chiung Shisnn Su, Wei Chih Chen, Liane Jye Di Wang, Shing 土木工程學系 Department of Civil Engineering |
關鍵字: | short time Fourier transform;modal parameters;ARX |
公開日期: | 1-一月-2014 |
摘要: | This work presents the use of a short time Fourier transform to identify the modal parameters (such as natural frequencies, damping ratios and mode shapes) of a structure from its earthquake responses data. The short time Fourier transform is applied to the measured acceleration responses of a structural system, and to reconstruct the autoregressive with exogenous input (ARX) model in time-frequency domain. The accuracy of this procedure is numerically confirmed; the effects of the remove frequency band and noise on the ability to accurately estimate the dynamic characteristics are also investigated. |
URI: | http://dx.doi.org/10.1109/IS3C.2014.322 http://hdl.handle.net/11536/129808 |
ISBN: | 978-1-4799-5277-9 |
ISSN: | |
DOI: | 10.1109/IS3C.2014.322 |
期刊: | 2014 INTERNATIONAL SYMPOSIUM ON COMPUTER, CONSUMER AND CONTROL (IS3C 2014) |
起始頁: | 1245 |
結束頁: | 1248 |
顯示於類別: | 會議論文 |