639 LMI を用いた複素モードシェープの実数化と誤差評価

概要

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A basic operation in several updating procedures and other modal analysis applications concern the transformation of the complex modes, identified from experimental tests, into equivalent real ones. But the arbitrary characteristic of the transformation prevents us from evaluating the error of mode shapes correctly. This paper describes the realization of complex modal shapes using the Linear Matrix Inequality (LMI) approach. The LMI approach is recently noted as solver of optimization problem in fields of automatic control etc. We discuss mainly that this method is effective to evaluate an error between real modal shapes and complex ones acquired from experimental modal analysis, and it gives the best real modal shapes fitted for experimental modal shapes in terms of optimization problem.
一般社団法人日本機械学会の論文
2002-09-13