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A Simple yet Effective Semi-Anechoic Chamber for the Acoustic Characterization of an LSRA

Salvado, J. A. C. ; Calado, M.R.A. ; Santo, A. Espírito

IEEE Latin America Transactions Vol. 11, Nº 5, pp. 1190 - 1200, September, 2013.

ISSN (print): 1548-0992
ISSN (online):

Journal Impact Factor: 0,326 (in 2014)

Digital Object Identifier: 10.1109/TLA.2013.6684394

Abstract
This paper presents a simple and cost effective solution of a semi-anechoic chamber suitable for the acoustic noise characterization of a Linear Switched Reluctance Actuator (LSRA). Using simple construction and assembling techniques, and low-cost materials, it allows significant acoustic isolation
characteristics from the environmental noise, caused by people´s activities, other machinery operation, etc. The average attenuation achieved is better than 30 dB for a noise source placed at 1 meter distance from its walls. The overall test results demonstrate an affordable yet effective semi-anechoic chamber solution, and prove its adequacy for the specific purpose of characterizing a LSRA in
terms of the acoustic noise produced.