鉄道車両の内装透過音制御システムの開発 : 第3報,新幹線車両デッキ部騒音における制御効果の検証(機械力学,計測,自動制御)

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  • Development of a System to Control Noise Transmitted Through Interior Panels of Railway Vehicles : 3rd Report, Verification of the Control Effect to the Deck Noise of the Shinkansen Vehicle(Mechanical Systems)
  • 鉄道車両の内装透過音制御システムの開発(第3報)新幹線車両デッキ部騒音における制御効果の検証
  • テツドウ シャリョウ ノ ナイソウ トウカオン セイギョ システム ノ カイハツ ダイ3ポウ シンカンセン シャリョウ デッキブ ソウオン ニ オケル セイギョ コウカ ノ ケンショウ

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As a new countermeasure to the interior noise of the railway vehicle, a development for a noise control system with piezoelectric material has been advanced. This paper describes availability verification test about the system in the railway vehicle, which is considered to have a very hard situation for application of the active noise control system. For the test of the noise reduction effect in running vehicle, we manufactured the noise control system sets for a deck of the Shinkansen, and assessed the noise reduction effect in stationary test. A target frequency was determined based on the noise reduction effect and the characteristics of the interior noise of the deck. Numerical analysis was carried out about the noise change distribution in the deck at a target frequency when the noise control system applied on the outer-side gable wall. Furthermore, the noise control systems are actually installed on the outer-side gable wall in a deck of the Shinkansen vehicle, the interior noise of the deck suppressed maximum 4dB in control frequency range, and the result demonstrates the availability of the system to the railway vehicle.

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