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

Toshihiko Yamaguchi; Yoshiro Iwai; Shigeru Inagaki; Masahiro Ueda

doi:10.1016/S0263-2241(02)00067-2

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 journal › Article › peer-review

26 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 language	English
Pages (from-to)	205-211
Number of pages	7
Journal	Measurement: Journal of the International Measurement Confederation
Volume	33
Issue number	3
DOIs	https://doi.org/10.1016/S0263-2241(02)00067-2
Publication status	Published - Apr 1 2003
Externally published	Yes

All Science Journal Classification (ASJC) codes

Instrumentation
Electrical and Electronic Engineering

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10.1016/S0263-2241(02)00067-2

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AB - 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.

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

Abstract

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