A BOUNDARY ELEMENT APPROACH TO OPTIMIZATION OF ACTIVE NOISE-CONTROL SOURCES ON 3-DIMENSIONAL STRUCTURES

被引：31
作者：
CUNEFARE, KA
KOOPMANN, GH
机构：
[1] The Pennsylvania State University, University Park, PA
来源：
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME | 1991年 / 113卷 / 03期
关键词：
D O I：
10.1115/1.2930196
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This paper presents the theoretical development of an approach to active noise control (ANC) applicable to three-dimensional radiators. The active noise control technique, termed ANC Optimization Analysis, is based on minimizing the total radiated power by adding secondary acoustic sources on the primary noise source. ANC Optimization Analysis determines the optimum magnitude and phase at which to drive the secondary control sources in order to achieve the best possible reduction in the total radiated power from the noise source/control source combination. For example, ANC Optimization Analysis predicts a 20 dB reduction in the total power radiated from a sphere of radius alpha at a dimensionless wavenumber ka of 0.125, for a single control source representing 2.5 percent of the total area of the sphere. ANC Optimization Analysis is based on a boundary element formulation of the Helmholtz Integral Equation, and thus, the optimization analysis applies to a single frequency, while multiple frequencies can be treated through repeated analyses.
引用
收藏
页码：387 / 394
页数：8
相关论文
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