실험적 방법을 이용한 디지털 카메라 경통 줌 모듈의 소음원 규명 및 저소음화
- Title
- 실험적 방법을 이용한 디지털 카메라 경통 줌 모듈의 소음원 규명 및 저소음화
- Other Titles
- Experimental Analysis on Barrel Zoom Module of Digital Camera for Noise Source Identification and Noise Reduction
- Author
- 오재응
- Keywords
- 디지털 카메라 경통; 소음원 규명; 스펙트럼 해석; 일반 기여도 함수; 줌 모듈; Digital Camera Barrel; Noise Source Identification; Ordinary Coherence Function; Spectral Analysis; Zoom Module
- Issue Date
- 2011-11
- Publisher
- 한국소음진동공학회
- Citation
- 한국소음진동공학회 논문집, 2011, 21, P.1074-1083
- Abstract
- Noise of digital camera has been noticeable to its users. Particularly, noise of a barrel assembly module in zoom in/zoom out operation is recorded while taking a video. Reduction of barrel noise becomes crucial but there are not many studies on noise of digital camera due to its short history of use. In this study, experiment-based analyses are implemented to identify sources of noise and vibration because of complexity and compactness of the barrel system. Output noise is acquired in various operation conditions using synchronization for spectral analysis. Noise sources of a barrel assembly in zoom operating are first identified by the comparison with gear frequency analysis and then correlation analysis between noise and vibration is applied to confirm the generation path of noise. Analysis on noise transfer characteristic of zoom module is also carried out in order to identify the most contributing components. One of possible countermeasures of noise in zoom operating is investigated by an experimental approach.
- URI
- http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=SOJDCM_2011_v21n11_1074
- ISSN
- 1598-2785
- DOI
- 10.5050/KSNVE.2011.21.11.1074
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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