노면가진소음의 전달경로 파악 : 다중기여도함수 및 연결부위의 상대가속도 이용 Transfer Path Identification of Road Noise;Using Multiple Coherence Function and Relative Acceleration

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Among the various sources of vehicle interior noise, this paper concerns the road induced noise ; the identification of its transfer path by using experimental method. Multiple input and single output model is taken as a noise generation model. Because it is impossible to measure the road imput forces directly, the acceleration signals are measured on four axle;three directions for each point. By considering the cross correlations of input signals, four uncorrelated source groups are taken. Multiple coherence function is employed to investigate the contribution of each group. In addtion, to identify the detailed path through the suspension systems, the contributions of all possible paths are ranked by using the coherence functions between interior noise and the relative accelerations of connections such as bushings and mountings. Measurements are performed with passenger vehicle traveling on concrete and asphalt roads at 60㎞/h.
Publisher
한국자동차공학회
Issue Date
1997
Language
Korean
Citation

한국자동차공학회 논문집, v.5, no.4, pp.84 - 92

ISSN
1225-6382
URI
http://hdl.handle.net/10203/76666
Appears in Collection
ME-Journal Papers(저널논문)
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