한국정밀공학회:학술대회논문집 (Proceedings of the Korean Society of Precision Engineering Conference)
- 한국정밀공학회 1997년도 춘계학술대회 논문집
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- Pages.46-50
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- 1997
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- 2005-8446(pISSN)
저소음 저배압을 위한 다중 모드 지능제어 배기계에 관한 연구
A Study on the multi-mode muffler by intelligent control for low noise and low backpressure
초록
Acoustic signals from the vehicle muffler has various kinds of noises. For control of noise from the vehicle muffler, the major part of noise to be contorted is that correlated with the revolution of the vehicle engine. For this reason the most efficient method for noise control is to use the extracted acoustic signals correlated with revolution as a controlled factor. Therebefore in this paper we developed and proofed an algorithm for efficient amplitude detection and phase detection related to the engine operating revolution from the vehicle muffler noise by orthogonality.