Optimization of control source locations in free-field active noise control using a genetic algorithm
Control source locations in active noise control applications introduce a physical limit in the amount of attenuation achievable by the system. A genetic algorithm was developed to find the optimal control source locations for a primary source configuration in a free-field with a specified
number of control sources. The optimal configuration of control sources around a single monopole primary source was shown to be a linear arrangement of the sources. This holds true for both two-dimensional as well as three-dimensional configurations. These results are presented for configurations
using up to six control sources. The linear arrangement of control sources provides higher-order radiation characteristics than previously studied arrangements. Experimental verification has shown that a monopole primary source is controlled more effectively with a linear array of sources
than sources surrounding the primary source for a broad frequency range. The source strength required from the control sources in each configuration is also explored.
Document Type: Research Article
Publication date: 01 May 2009
NCEJ is a peer reviewed Technical journal published every two months. The papers published in NCEJ cover general topics related to noise control engineering, ranging from fundamental research to applied case studies and histories.
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