音圧測定による機械の振動状態の推定 : 音響・振動系逆問題解析における不適切性低減手法の提案

概要

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In this study, a method for the regularization of the acoustic-vibratory inverse analysis has been proposed. The method is that the satisfactory fundamental solution in BEM is selected according to the problem to be solved for the regularization. The adequate condition for solving the acoustic-vibratory inverse problem is found by using the objective function which are the condition number of the coefficient matrix and the error norm caused by the rank reduction of the matrix. In a numerical example, the adequate condition can be found to the identified problem of the vibration condition of sound source in enclosed space. It was seen that the adequate condition obtained by the proposed method is more adequate than the one obtained by the conventional method from the viewpoint of the objective function. The proposed method is, therefore, proved to be very effective for the acoustic inverse analysis.
社団法人日本機械学会の論文
2000-12-25