翻訳と辞書 Words near each other ・ Frequency band ・ Frequency capping ・ Frequency changer ・ Frequency Changing Station ・ Frequency comb ・ Frequency compatibility ・ Frequency compensation ・ Frequency conversion ・ Frequency coordination ・ Frequency coordinator ・ Frequency counter ・ Frequency deviation ・ Frequency distribution ・ Frequency divider ・ Frequency domain ・ Frequency domain decomposition ・ Frequency domain sensor ・ Frequency drift ・ Frequency extender ・ Frequency following response ・ Frequency format hypothesis ・ Frequency frogging ・ Frequency grid ・ Frequency Level Expander ・ Frequency meter ・ Frequency mixer ・ Frequency modulation ・ Frequency modulation synthesis ・ Frequency multiplier ・ Frequency of optimum transmission Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Frequency domain decomposition ： ウィキペディア英語版 Frequency domain decomposition The frequency domain decomposition (FDD) is an output-only system identification technique popular in civil engineering, in particular in structural health monitoring. As an output-only algorithm, it is useful when the input data is unknown. FDD is a modal analysis technique which generates a system realization using the frequency response given (multi-)output data. == Algorithm == # Estimate the power spectral density matrix $\backslash hat\_(j\backslash omega)$ at discrete frequencies $\backslash omega\; =\; \backslash omega\_i$. # Do a singular value decomposition of the power spectral density, i.e. $\backslash hat\_(j\; \backslash omega\_i)\; =\; U\_i\; S\_i\; U\_i^H$ where $U\_i\; =\; ()$ is a unitary matrix holding the singular values $u\_$, $S\_i$ is the diagonal matrix holding the singular values $s\_$. # For an $n$ degree of freedom system, then pick the $n$ dominating peaks in the power spectral density using whichever technique you wish (or manually). These peaks correspond to the mode shapes.〔 ## Using the mode shapes, an input-output system realization can be written. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Frequency domain decomposition」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.