617 遮音板配列型騒音制御システムによる壁面透過音低減法の研究

概要

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It is difficult to reduce the transmitted noise through the internal panel of the railway vehicle by any existing active control methods, which are necessary to identify the vibration-modes of target structure, because the vibration characteristics of the interior panel changes while running. We propose a new noise control system that the noise insulation panel with piezoelectric material arrange, and enable the transmitted noise through a target plate to reduce by suppressing the vibration of the noise insulation panels with a simple analog control circuit. In this paper, after the equivalent mechanical models for a number of the piezoelectric material are shown, we demonstrate the analytical and experimental results about the control effects of the noise insulation panel and the transmitted noise through a target plate by the control system without identification to the vibration or transmitted noise characteristics of the target plate.
社団法人日本機械学会の論文
2008-09-02