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http://dx.doi.org/10.5370/KIEE.2012.61.7.1069

Multi-channel ANC System Modeling for Reducing KTX Interior Noise  

Jang, Hyeon-Seok (동아대 공대 전기공학과)
Kim, Sae-Han ((주)현대자동차 남양연구소)
Lee, Tae-Oh ((주)보강하이텍 연구원)
Koo, Kyung-Wan (호서대 공대 국방과학기술학과)
Lee, Kwon-Soon (동아대 공대 전기공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.61, no.7, 2012 , pp. 1069-1076 More about this Journal
Abstract
We use largely two methods, how to control the noise of the KTX, they are the passive noise control method and the active noise control method. The passive noise control has been used in a variety of ways since the KTX opening day, but lately it has shown the technical limitations by being dropped sharply. So, it is getting important to conduct the research about ANC that is able to reduce the ambient noise when the environmental-factor changes and be installed easily. To reduce a three-dimensional closed-space sound field like a car of a high-speed rail is hard to do using single channel ANC control system. Therefore we have to model the paths of the noise exactly for reducing the noise. And the control speakers and the error mics should be designed for optimal position. In this paper, we designed the transfer functions for modeling the noise paths under the influence of the distance between control speakers & error mics and primary noise speaker in TEST-BED where there is modeled as actual interior of KTX. We have made the modeling and the simulations of interior environment of KTX car by using three frequency bands of 120Hz, 280Hz, 360Hz. After the modeling, we compared the performance of active noise control and also we analyzed what to affect with difference in distance. After comparing of the performance using Pure Tone 120Hz, 280Hz, 360Hz at each modeling and then we simulated ANC for KTX's interior noise which we measured really and analyzed.
Keywords
KTX; Active noise control; ANC; Modeling;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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