Modified PolyMAX for Parametric Identification of Structures with Close Modes

in International Symposium (oral presentation paper), 國際研討會(全文口頭發表)
標題Modified PolyMAX for Parametric Identification of Structures with Close Modes
出版類型國際研討會(全文口頭發表)
出版年度2018
AuthorsLin, 林章生
出版日期Oct 14 2018 12:0
會議地點Xi’an
其他編號0000
中文摘要

In this paper, we propose an improvement of PolyMAX method to perform parametric estimation of structures with close modes. By introducing the matrix-fractional coefficients model consisting of the frequency response functions of a multiple-degree-of-freedom (MDOF) system, and using the different-order constructed stabilization diagram in the process of modal estimation, we can estimate the number of structural modes to be identified. The modal parameters of a system can be obtained by directly solving the eigenproblem of companion matrix yielded from least square estimation.

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