Identification of Acoustic-Vibratory System by Acoustic Measurement

Article type: Research Article

Authors: Iwatsubo, Takuzo | Kawamura, Shozo | Kamada, Masahito

Affiliations: Department of Mechanical Engineering, Faculty of Engineering, Kobe University, Rokkodai, Nada, Kobe 657, Japan

Abstract: A new method for reducing ill-conditioning in a class of identification problems is proposed. The key point of the method is that the identified vibration of the sound source is expressed as a superposition of vibration modes. The mathematical property of the coefficient matrix, the practical error expanding ratio, and the stochastic error expanding ratio are investigated in a numerical example. The mode-superposition method is shown to be an effective tool for acoustic-vibratory inverse analysis.

DOI: 10.3233/SAV-1996-3105

Journal: Shock and Vibration, vol. 3, no. 1, pp. 27-37, 1996