316 モジュール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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We propose a new module-type noise control system, in which small noise control devices are arranged on a plane, to act against the noise transmitted through the interior panel that becomes larger in tunnels. This noise control system controls the noise incident to the interior panel, therefore, it is unnecessary to identify the vibration characteristics of the interior panel or noise transmitted through it, and a certain level of noise reduction is ensured irrespective of the change of vibration characteristics of the interior panel during train running. As fundamental work, we carried out a study on the application to the noise transmitted through a flat plate equivalent to an interior panel. This paper first presents the outline of the noise control system and modeling. Furthermore, the overall behavior of the system is examined by numerical analysis, and finally experimental results of the control effect are shown.
社団法人日本機械学会の論文
2007-09-25