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Rubbing Detection of Sliding Bearings in Early Stage by Frequency Modulation Analysis
Author(s) -
Sako Takashi,
Tokumo Koutaro,
Yoshie Osamu
Publication year - 2014
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.11559
Subject(s) - rubbing , cepstrum , stage (stratigraphy) , frequency domain , vibration , modulation (music) , frequency modulation , spectral analysis , time domain , acoustics , materials science , computer science , control theory (sociology) , physics , speech recognition , artificial intelligence , geology , bandwidth (computing) , composite material , telecommunications , computer vision , control (management) , paleontology , quantum mechanics , spectroscopy
SUMMARY It is important in maintenance to detect rubbing of sliding bearings in the early stage. An experiment on mild rubbing conditions was conducted, and the changes in vibration were examined. Importantly, a newly found fact is that peaks in the spectral domain with respect to the rotational period occur as a result of rubbing. Consequently, cepstrum analysis was shown to be effective for the detection of rubbing in the early stage. A device that can follow the level of the quefrency was developed based upon this idea. Utilizing the device is a highly efficient way to monitor the condition of a sliding bearing.