Identification of vibration source and transmission based on modified transfer path analysis considering global modes = 전체 모드를 고려한 변형된 경로 전달 분석 기법을 이용한 가진원 추정 및 경로분석

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Recently, not only the demand for air-conditioner is increased, but also air-conditioner becoming most favor home appliances in the present. But air-conditioner generate a great deal of noise among home appli-ances, become a target of public grievance. Especially, air-conditioner outdoor room system occur vibration, and it cause second noise that transfer to another part. Therefore, to reduce the air-conditioner outdoor room system vibration become a big issue of today. In this study, using conventional transfer path analysis, esti-mate operational forces of compressor of air-conditioner outdoor system which was main vibration source. However, conventional transfer path analysis method is not considered global mode that air-conditioner out-door whole system movement. Therefore, to correct the flaw of conventional transfer path analysis, modified transfer path analysis is proposed in the paper. Apply to simple hinged-free model which has global mode, validate the modified transfer path analysis through comparison both results, conventional and modified transfer path analysis. Also modified transfer path analysis apply to real air-conditioner model, obtain opera-tional forces without influence of global mode and resonant frequency.
Advisors
Oh, Il-Kwonresearcher오일권
Description
한국과학기술원 : 해양시스템공학전공,
Publisher
한국과학기술원
Issue Date
2013
Identifier
567109/325007  / 020114311
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 해양시스템공학전공, 2013.8, [ viii, 80 p. ]

Keywords

Transfer path analsysis; 에어컨; 가진력 추정; 구조진동; 전달함수; 전달경로해석법; Frequency response function; strructural vibration; force estimation; air conditioner

URI
http://hdl.handle.net/10203/197986
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=567109&flag=dissertation
Appears in Collection
OSE-Theses_Master(석사논문)
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