感度解析を用いた振動システムの同定 : 第1報,解析方法の説明と基礎的検討

概要

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The authors attempt to construct a system with several degrees of freedom having the same modal parameters as those obtained by FEM analysis or measurement. In this paper, a system identification method using sensitivity analysis is proposed for an undamped lumped-mass model. In the method, model parameters such as mass values or spring constants are initially given and then modified by the least-squares minimization procedure to minimize the difference between the predicted modal parameters and the desired values. Some conditions on the selection of the model parameters and the desired values are discussed for obtaining the solution of system identification. System constructions, for example, with three or five degrees of freedom models are shown, thereby demon-strating typical characteristics of the presented method.
一般社団法人日本機械学会の論文
1986-04-25