Rubbing detection of sliding bearings in early stage by frequency modulation analysis

Takashi Sako*, Koutaro Tokumo, Osamu Yoshie

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)11-23
Number of pages13
JournalElectronics and Communications in Japan
Issue number12
Publication statusPublished - 2014 Dec 1


  • Cepstrum
  • Machine condition monitoring
  • Machine diagnosis
  • Rubbing
  • Sliding bearing
  • Vibration

ASJC Scopus subject areas

  • Signal Processing
  • Physics and Astronomy(all)
  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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