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Noise Analysis of Geared Motor using Cepstrum and Comb Lifter  

Lee Min Hwan (대우정밀 기술연구소)
Kang Dong Bae (부산대학교 지능기계공학과 대학원)
Kim Hwa Young (부산대학교 기계기술연구소)
Ahn Jung Hwan (부산대학교 기계공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.22, no.5, 2005 , pp. 72-79 More about this Journal
Abstract
Gearing system emits inconsistent noise from gear teeth impact in case of gear defects. But, it is not easy for inspection operator in production line to distinguish objectively the defective product. Therefore, customer complains continuously bad noise of the geared motor. Because impulsive signal at low frequency has a tendency not to appear in frequency domain, it is difficult to separate the gear inconsistent noise of defective gear from overall geared motor's noise using general signal processing method such as FFT. In this paper, the method to estimate more objectively the inconsistent noise of gearing system and to measure the quantities is suggested. Suggested method uses Cepstrum, Autocorrelation, Comb Lifter and Inverse Cepstrum by turns to make objective quantities about noise level.
Keywords
Cepstrum; Comb Lifter; Frequency Domain; Geared Motor; Gear Noise;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Adams, M.L., 'Rotating Machinery Vibration,' Marcel Dekker Inc., pp. 225-243, pp. 253-290, 2001
2 Park, I.K., 'Matlab Guide,' A-Jin, pp. 41-54, pp. 202-207, 1998
3 Bogert, B.P., Healy, M.J.R., Tukey, J.W., 'The Quefrency Analysis of Time Series for Echoes: Cepstrum, Pseudo-Autocovariance, Cross-Cepstrum and Shape Cracking,' Proceedings of the Symposium on Time Series Analysis, by M.Rosenblatt, Wiley N.Y., pp. 209-243, 1963
4 Wismer, N.J., 'Gearbox Analysis using Cepstrum Analysis and Comb Liftering, Application Note,' B&K,1994
5 Choi, Y.C., Kim, Y.H., 'Detection of Impulse Signal in Noise Using a Minimum Variance Cepstrum Application on Faults Detection in a Bearing System,' Journal of KSNVE, Vol. 10, No.6, pp. 985-990, 2000   과학기술학회마을
6 Cunningham, E.P., 'Digital Filtering,' Houghton Mifflin, pp. 236-402, 1992
7 Randall, R.B., 'Frequency Analysis,' B&K, pp. 16-77, pp. 271-304,1987
8 Taylor, J.I., 'The Gear Analysis Handbook,' VCI, pp. 156-228, 2000
9 Choi, Y.C., Kim, Y.H., 'Detection of Impulse Signal in Noise Using a Minimum Variance Cepstrum-Theory,' Journal of KSNVE, Vol. 10, No.4, pp. 642-647, 2000   과학기술학회마을
10 Lee, M.H., Kang, D.B., Kim, H.Y., Ahn, J.H., 'Development of worm machining method to improve noise and vibration of automotive DC motor,' Proc, of the KSPE Spring Annual Meetings, pp. 777-780, 2004