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http://dx.doi.org/10.5207/JIEIE.2005.19.6.036

Induction Motor Bearing Damage Detection Using Stator Current Monitoring  

Yoon, Chung-Sup (한밭대학교 신소재공학부)
Hong, Won-Pyo (한밭대학교 건축설비공학과)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.19, no.6, 2005 , pp. 36-45 More about this Journal
Abstract
This paper addresses the application of motor current spectral analysis for the detection of rolling-element bearing damage in induction machines. We set the experimental test bed. They is composed of the normal condition bearing system, the abnormal rolling-element bearing system of 2 type induction motors with shaft deflection system by external force and a hole drilled through the outer race of the shaft end bearing of the four pole test motor. We have developed the embedded distributed fault tolerant and fault diagnosis system for industrial motor. These mechanisms are based on two 32-bit DSPs and each TMS320F2407 DSP module is checking stator current The effects on the stator current spectrum are described and related frequencies are also determined. This is an important result in the formulation of a fault detection scheme that monitors the stator currents. We utilized the FFT(Fast Fourier Transform), Wavelet analysis and averaging signal pattern by inner product tool to analyze stator current components. Especially, the analyzed results by inner product clearly illustrate that the stator signature analysis can be used to identify the presence of a bearing fault.
Keywords
Rolling element bearing damage; Motor current spectral analysis; FFT; Wavelet analysis and averaging signal pattern by inner product tool;
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