National Changhua University of Education Institutional Repository : Item 987654321/18317
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题名: Application of Feedforward Adaptive Active-Noise Control for Reducing Blade Passing Noise in Centrifugal Fans
作者: Wu, Jian-Da;Bai, Mingsian R.
贡献者: 車輛科技研究所
日期: 2001-02
上传时间: 2014-04-29T07:25:46Z
出版者: Academic Press
摘要: 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 at 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.
關聯: Journal of Sound and Vibration, 239(5): 1051-1062
显示于类别:[車輛科技研究所] 期刊論文

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