125 薄板の騒音伝達の能動制御 : 有限要素法を用いた制御システムの設計(サイレント工学IV:能動騒音制御)(OS.04 : サイレント工学)

概要

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This paper describes the design study of sound transmission reduction control through thin plate by using FEM (Finite Element Method). Piezoelectric ceramics, which are bonded of both surface of the plate, are used as sensors and as actuators. Incident sound plane wave on the plate is assumed as the disturbance of the system. H_∞ controller is designed to minimize the sensitivity from the disturbance to the sound pressure radiated from the plate. It is shown that the mode shapes of low order bending vibration predicted with FEM agree well with those obtained with measurements. The usefulness of the proposed design method will be demonstrated by control experimentations.
一般社団法人日本機械学会の論文
2001-08-03