%0 Generic
%D 2018
%T Modified PolyMAX for Parametric Identification of Structures with Close Modes
%A 林章生
%C Xi’an
%X 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.
%8 Oct 14 2018 12:0