Diagnosis and Monitoring Method for Detecting and Localizing Bearing Faults

DOI: https://doi.org/10.52549/ijeei.v12i1.4612
Published: 11-01-2024 • Issue: Vol. 12 No. 1: March 2024 • Section: Regular paper

Abstract

Induction motors in modern industry are becoming more and more functional and complex. Unfortunately, these machines are not free from damages what make their fault diagnosis the most critical aspect of system monitoring and maintenance. Vibrational signal data yields relevant information about the state of the entire system, as well as specifically about one of its components that makes its analysis quite interesting. For this effect, the current paper aims to propose an automatic diagnosis and monitoring method for detecting and locating bearing faults in an induction motor based on vibration signal processing. The suggested method combines the discrete wavelet transform (DWT) with the envelope spectrum (ENV) as advanced signal processing, incorporating a machine learning algorithm based on random forest classifier. The discrete wavelet transforms (DWT), using the Haar wavelet, decomposes the vibrational signal to provide both approximations and details. Each detail is then reconstructed to avoid any missing of information. To precisely select the reconstructed detail (ð‘…ð‘’ð‘ð‘‘ð‘˜) that provides pertinent information about bearing faults, a statistical study is conducted. This study involves calculating four indicators (Root mean square (RMS), correlation coefficient (CC), energy coefficient (EC) and peak to peak (P2P) factor) is performed for each (ð‘…ð‘’ð‘ð‘‘ð‘˜). These indicators are compared with threshold indicators, and this criterion is met by the reconstructed details 1 and 3. The obtained reconstructed details are then subjected to the spectral envelope analysis to detect the fault frequencies, which are considered as new features entering the random forest classifier model. This combination of approaches allows better feature extraction and structuring of the dataset, leading to improved accuracy of the random forest classifier, achieving a higher classification rate of more than 99,53 %. The proposed DWT-ENV-RF method indicates well its efficiency when compared to other recent works, and the attained results are all confirmed by the experimental tests conducted in the CWRU laboratory.

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Author Biographies

Saida Dahmane

Saida DAHMANE received her B.Sc. degree in industrial maintenance in 2017, her M.Sc. in Management and engeneering of industrial maintenance in 2020 from the national high school of technology in Algies-Algeria, and is currently a Ph.D. student in Industrial maintenance field. Her research interests include signal processing, machine learning, electrical machine and drive modeling and analysis, electrical machine and drive control and converters as well as electrical machine and drive faults diagnosis and tolerance.

Fouad Berrabah

born in m'sila, in 1979. He received the B.Sc., M.Sc. and Ph.D. degrees in Electromechanical Engineering from Badji-Mokhtar Annaba University Algeria in 2002, 2008 and 2017 respectively. He is a lecturer senior at the University of M'sila in Algeria. His research interests include electrical machine and drive modeling and analysis, electrical machine and drive control and converters as well as electrical machine and drive fault diagnosis and tolerance

 

Mabrouk Defdaf
Mabrouk DEFDAF received his B.Sc., M.Sc. and Ph.D. degrees in Electromechanical Engineering from Badji-Mokhtar Annaba University Algeria in 2000, 2007 and 2018 respectively. He is a lecturer senior at the University of M'sila in Algeria. His research interests include electrical machine and drive modeling and analysis, electrical machine and drive control and converters as well as electrical machine and drive fault diagnosis and tolerance.
Saad Salah
Saad SALAH was born in Batna, Algeria, in 1958. He received the Engineer degree in electromechanical applied to mining fields from the University of Badji-Mokhtar, Annaba, Algeria, in 1983, and Ph.D. degree from Nottingham University, U.K., in 1988. Since 1988, he has been a Lecturer, a Senior Lecturer, and a Professor with the University of Badji-Mokhtar. He has supervised many graduated and postgraduate student theses. He has conducted many research projects in power electronics applications, electrical ac and dc drives, and diagnosis and faults detection in ac machines. He has authored or co-authored many journal and conference papers. He has co-authored a book in the field of signal processing published in Algeria in 1992. His research interests are mainly in the area of power electronics, such as harmonics elimination by active filters, PWM and space vector modulation control, multilevel inverters, new converter topologies, and vibration sensors.

How to Cite

[1]
S. Dahmane, F. Berrabah, M. Defdaf, and S. Salah, “Diagnosis and Monitoring Method for Detecting and Localizing Bearing Faults”, IJEEI, vol. 12, no. 1, pp. 1–14, Jan. 2024, doi: 10.52549/ijeei.v12i1.4612.