Identification of Structural Dynamic Characteristics Using Output-only Measurement
Date Issued
2006
Date
2006
Author(s)
Chen, Yen-Chun
DOI
zh-TW
Abstract
It is difficult to measure the input for system identification and this is
because there are many factors of .environment. So the output-only is
becoming important for the future. In this thesis, address several
output-only methods and then analysis identification of Structural
Dynamic Characteristics Using Output-only Measurement.
In order to identify the structure system, address two methods, KL
(Karhunen-Loéve ) and SSI (Stochastic Subspace Identification), to
identify the mode and then compare two methods. For the modal
frequency and damping ratio of the structure, there are four methods,
general method 、half-power method 、AR modal method 、two
least-squares ARMA modal method, to identify separately and then
compile statistics the measured data.
In connection with Gi-Lu bridge, we can understand the dynamic
characteristic of longitudinal、transverse and vertical directions and
consider the couple effect of the deck and cable.
Subjects
輸出量測
系統識別
output-only
ID
Type
thesis
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