A method for detecting bearing wear in a drain pump utilizing an eddy-current displacement sensor

Toshihiko Yamaguchi, Yoshiro Iwai, Shigeru Inagaki, Masahiro Ueda

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

A simple method for directly measuring bearing wear has been developed by means of an eddy-current displacement sensor. The system consists of a sensor head unit, including a displacement sensor and aluminum functioning foil as a target metal, a data processing system including an amplifier, an A/D converter of 14 bits, a personal computer, and a display. The error of this system was approximately 2 μm, which is sufficient for practical use. Another error caused by the system when used in a plant is discussed theoretically, and a method for the correct estimation of bearing wear without this error based on smoothing, i.e., an averaging of the sampling data, is proposed.

Original languageEnglish
Pages (from-to)205-211
Number of pages7
JournalMeasurement: Journal of the International Measurement Confederation
Volume33
Issue number3
DOIs
Publication statusPublished - Apr 1 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Electrical and Electronic Engineering

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