Active noise reduction of blade-passing frequency tone radiated from a centrifugal blower

Yutaka Ohta, Takashi Goto, Eisuke Outa

研究成果: Conference contribution

抜粋

The blade-passing frequency noise, abbreviated to BPF noise, radiated from a centrifugal blower, exhibits an extremely high level in the power spectrum of blower-radiated noise and dominates the overall noise level. In the present research, therefore, attention is focused on the BPF noise and two kinds of active control methods are applied to reduce the BPF noise level. One is an active noise source cancellation method and the other is an active noise reduction in the transmission passage. The assumed extent of the BPF noise source is replaced by flat plates which are driven by piezoelectric actuators, and the noise level of BPF can be reduced effectively without any influence on the other frequency components. In the noise reduction in the transmission passage, a small-sized loud speaker is used as a secondary source. The noise level of BPF can be reduced remarkably even in the highrotation region, as usually expected.

元の言語English
ホスト出版物のタイトルInstitute of Noise Control Engineering of the USA - 35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006
ページ2509-2518
ページ数10
出版物ステータスPublished - 2006 12 1
イベント35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006 - Honolulu, HI, United States
継続期間: 2006 12 32006 12 6

出版物シリーズ

名前Institute of Noise Control Engineering of the USA - 35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006
4

Conference

Conference35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006
United States
Honolulu, HI
期間06/12/306/12/6

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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  • これを引用

    Ohta, Y., Goto, T., & Outa, E. (2006). Active noise reduction of blade-passing frequency tone radiated from a centrifugal blower. : Institute of Noise Control Engineering of the USA - 35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006 (pp. 2509-2518). (Institute of Noise Control Engineering of the USA - 35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006; 巻数 4).