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자료유형
학술저널
저자정보
국형석 (Kookmin University) 김형건 (Hyundai Motors) 남경욱 (Hyundai Motors) 이강덕 (Hyundai Motors)
저널정보
한국소음진동공학회 한국소음진동공학회논문집 한국소음진동공학회논문집 제27권 제7호(통권 239호)
발행연도
2017.12
수록면
870 - 876 (7page)
DOI
10.5050/KSNVE.2017.27.7.870

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초록· 키워드

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Road roughness is known to be one of the most influential factors affecting road-noise level. A one-dimensional road-roughness profile can be measured by a laser profilometer attached to theside of a vehicle. The mean profile depth (MPD), which can be calculated from this profile, is commonly used to correlate the road-noise level and the road roughness; however, the MPD has little correlation with road-noise levels. The purpose of this study is to find reliable parameters other than MPD from the road-profile signal that are well-correlated with road noise, allowing surfaces to be quantified in terms of noise level. In this study, these parameters are obtained from the octave-band road-texture levels. To validate this approach, road-profile signals and interior road noises are measured from constant-speed-driving tests performed on various domestic and foreign roads. Interior noises are bandpass filtered to yield various road noises in different frequency bands, including booming noise, tympanic noise, and rumble noise. The road-roughness-profile signals measured with the laser profilometer during the constant-speed-driving tests are processed to yield the texture levels in eight octave bands. A principal-component analysis is then performed to reduce redundant information in the texture levels, and it turns out that the texture levels for the eight octave bands can be represented with high accuracy by two principal components. Finally, the correlation between various road-noise levels and road roughnesses is found by a regression analysis.

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ABSTRACT
1. 서론
2. 시험 장비와 측정 데이터
3. 시험 결과
4. 상관관계 분석
5. 결론
References

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