矩形平板を対象とする音響クラスターフィルタリングについて : 音響フィールド関数とクラスタリング・メカニズム

概要

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This paper considers the cluster filtering of a vibrating planar structure using acoustic sensors. Unlike vibration sensors attached directly to the targeted structure in an attempt to perform the cluster filtering, the acoustic sensors enable one to acquire data without causing any load effect on the structure. First, this paper begins by introducing the transformed sound pressure vector that becomes the foundation of a cluster filtering. Then, an acoustic field function is presented, and hence sound pressure is obtained by integrating the acoustic field function multiplied by modal functions of a planar structure. Furthermore, the fundamental characteristics of the acoustic field function are clarified, showing that the acoustic field function per se possesses the capability of conducting the cluster filtering. Finally, from a viewpoint of numerical analysis, the validity of the proposed cluster filtering method based upon acoustic sensors is verified.
社団法人日本機械学会の論文
2001-07-25