National Changhua University of Education Institutional Repository : Item 987654321/18320
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题名: Development of a Zero Spillover Controller for Broadband Cancellation of Noise in Ducts
作者: Wu, Jian-Da;Bai, Mingsian R.
贡献者: 車輛科技研究所
关键词: Acoustics;Active noise control;Digital signal processing;Spatially feedforward control
日期: 2001-11
上传时间: 2014-04-29T07:25:59Z
出版者: The Japan Society of Applied Physics
摘要: In this paper, an active noise control (ANC) system for broadband cancellation of noise in ducts, where a nonacoustical reference is unavailable and thus the ANC structure is "spatially feedforward" is presented. In this structure, acoustic feedback that is known to be detrimental to system stability and performance must be taken into account in controller design. In this case, difficulties generally arise in implementing the ideal controller, or the zero spillover controller due to plant uncertainties. In the present study, an equivalent approach based on the 2-norm (H2) optimal model matching principle is proposed in controller design. The control algorithm is implemented on a digital signal processor (DSP), by finite impulse response (IIR), in suppressing periodic noise and random noise sources, without and with airflow.
關聯: Japanese Journal of Applied Physics, 40(11): 6634-6640
显示于类别:[車輛科技研究所] 期刊論文

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