Wavelet based Neuro-Detector for low frequencies of vibration signals in electric motors

Duygu Bayram*, Serhat Şeker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

This study presents a Wavelet based Neuro-Detector approach employed to detect the aging indications of an electric motor. Analysis of the aging indications, which can be seen in the low frequency region, is performed using vibration signals. More specifically, two vibration signals are observed for healthy and faulty (aged) cases which are measured from the same electric motor. Multi Resolution Wavelet Analysis (MRWA) is applied in order to obtain low and high frequency bands of the vibration signals. Thus for detecting the aging properties in the spectra, the Power Spectral Density (PSD) of the subband for the healthy case is used to train an Auto Associative Neural Network (AANN). The PSD amplitudes, which are computed for the faulty case, are applied to input nodes of the trained network for the re-calling process of AANN. Consequently, the simulation results show that some spectral properties defined in low frequency region are determined through the error response of AANN. Hence, some specific frequencies of the bearing damage related to the aging process are detected and identified.

Original languageEnglish
Pages (from-to)2683-2691
Number of pages9
JournalApplied Soft Computing
Volume13
Issue number5
DOIs
Publication statusPublished - 2013

Keywords

  • Aging
  • Auto Associative Neural Network
  • Bearing damage
  • Electric motor
  • Multi Resolution Wavelet Transform
  • Vibration

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