National Changhua University of Education Institutional Repository : Item 987654321/18320

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NCUEIR > College of Technology > vr > Periodical Articles > Item 987654321/18320

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/18320

Title:	Development of a Zero Spillover Controller for Broadband Cancellation of Noise in Ducts
Authors:	Wu, Jian-Da;Bai, Mingsian R.
Contributors:	車輛科技研究所
Keywords:	Acoustics;Active noise control;Digital signal processing;Spatially feedforward control
Date:	2001-11
Issue Date:	2014-04-29T07:25:59Z
Publisher:	The Japan Society of Applied Physics
Abstract:	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.
Relation:	Japanese Journal of Applied Physics, 40(11): 6634-6640
Appears in Collections:	[vr] Periodical Articles

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