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題名 | Discussion on the Identification of Seismic Response Data of Buliding--Linear System=結構物地震反應之系統織別討論--線性系統 |
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作者 | 羅俊雄; 林泓模; 吳子修; | 書刊名 | 力學 |
卷期 | 12:3 1996.09[民85.09] |
頁次 | 頁339-351 |
分類號 | 441.2 |
關鍵詞 | 系統識別; 線性過濾理論; 結構動力; System identification; Linear filtering theory; Structural dynamics; |
語文 | 英文(English) |
中文摘要 | 本論文在討論以線性過濾理論及最小平方估算法在離散時間下進行結構物系統織 別。以 28 層鋼構架之樓房結構之地震反應資料進行分析。經由該樓房地震反應資料分析, 在處理系統識別中一些重要及實際遭遇到之問題,如輸入及輸出地震資料之處理、模式之選 擇及正確性及各振態參數與各模態貢獻量均於文中加以討論。除此之外,本文亦採用上線調 適性遞歸分析法( Adaptive Recursive Procedure )進行模式參數識別。經由此分析模式 參數之時變性可予以採用遞迴性迴歸分析配合指數遞減權重而予以識別出。 |
英文摘要 | In this paper we discuss the discrete-time method for system identification based on linear filtering theory and least squares estimation. Seismic response data of a 28-story steel frame building were used for the analysis. Through the analysis on the building seismic response data, some important and practical problems in system identification, such as the processing of input and output data, selection and validation of the models, and estimation of modal contribution are discussed. In addition an adaptive recursive procedures were used for modal identification problem. The time-varying modal parameters were estimated using the recursive procedures with exponentially decaying weighting factors. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。