Application of feedforward adaptive active-noise control for reducing blade passing noise in centrifugal fans

J. D. Wu, M. R. Bai

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

This paper describes two configurations of feedforward adaptive active-noise control (ANC) technique for reducing blade passing noise in centrifugal fans. In one configuration the control speaker is installed at the cut-off region of the fan, while in the other configuration an the exit duct. The proposed ANC system is based on the filtered-x least-mean-squares (FXLMS) algorithm with multi-sine synthesized reference signal and frequency counting and is implemented by using a digital signal processor (DSP). Experiments are carried out to evaluate the proposed system for reducing the noise at the blade passing frequency (BPF) and its harmonics at various flow speeds. The results of the experiment indicated that the ANC technique is effective in reducing the blade passing noise for two configurations by using the feedforward adaptive control.

Original languageEnglish
Pages (from-to)1051-1062
Number of pages12
JournalJournal of Sound and Vibration
Volume239
Issue number5
DOIs
Publication statusPublished - 2001 Feb 1

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

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