Active noise cancellation of ducted fan using real-time acoustic modal analysis

Kenichiro Nagat, Yutaro Suzuki, Ytizo Inokuchi, Hideshi Oinuma, Tatsuya Ishll, Nobuhiko Yamasaki

研究成果: ジャーナルへの寄稿記事

抄録

The main objective of this study is to apply active noise cancellation technique to the duct fan. In the acoustic field of a duct fan, the rotating acoustic modes are generated due to the interaction of stators and rotating blades. To achieve the essential elimination of dominant acoustic modes inside the duct, the accurate acoustic mode decomposition and the reproduction of anti-noise are both required. We build a real-time acoustic mode decomposition system with an anay of microphones circumferentially mounted on the duct surface. The filtered-x EMS algorithm in the frequency domain form is developed with applying the result of mode decomposition as an enor signal in order to achieve the elimination of a specific acoustic mode. An anay of loudspeakers is equipped circumferentially onto the duct to generate "anti-noise" signal. A large noise reduction and rapid convergence with this method have been shown by the results.

元の言語英語
ページ(範囲)739-743
ページ数5
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
79
発行部数801
DOI
出版物ステータス出版済み - 7 15 2013

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ducted fans
Modal analysis
Acoustic noise
cancellation
Ducts
Fans
ducts
Acoustics
acoustics
Decomposition
fans
decomposition
elimination
Loudspeakers
Acoustic fields
Microphones
Noise abatement
stators
Stators
loudspeakers

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

これを引用

Active noise cancellation of ducted fan using real-time acoustic modal analysis. / Nagat, Kenichiro; Suzuki, Yutaro; Inokuchi, Ytizo; Oinuma, Hideshi; Ishll, Tatsuya; Yamasaki, Nobuhiko.

:: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 巻 79, 番号 801, 15.07.2013, p. 739-743.

研究成果: ジャーナルへの寄稿記事

Nagat, Kenichiro ; Suzuki, Yutaro ; Inokuchi, Ytizo ; Oinuma, Hideshi ; Ishll, Tatsuya ; Yamasaki, Nobuhiko. / Active noise cancellation of ducted fan using real-time acoustic modal analysis. :: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B. 2013 ; 巻 79, 番号 801. pp. 739-743.
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