Paper Info
Title
Empirical Mode Decomposition of Motor Current Signatures for Centrifugal Pump Diagnostics
Abstract
Motor current signature analysis (MCSA) is an important, reliable and non-invasive technique for monitoring rotation machines. Spectrum analysis is a common way to implement MCSA, which allows large faults such as severe mechanical imbalance to be extracted successfully, but is often ineffective in the detection of incipient faults such as supporting bearings from motor drive systems because of noise and nonlinear interferences. To improve the performance of MSCA, this paper exploits the use of Empirical Mode Decomposition (EMD) method as an advanced tool to process motor current signals for noise reduction and nonlinear signature enhancement. The nonlinear demodulation property of EMD is firstly reviewed in association with the motor current signal models with fault cases. Then EMD is applied to signals from different fault cases from a centrifuge pump system to verify its performances in extracting the fault signatures for separating different faults. In conjunction with the envelope spectrum of separated intrinsic mode function (IMF), it shows that the proposed EMD based approach produces a better result in diagnosing common pump faults: small defects on impeller and bearings, which cannot be separated based on spectrum analysis.
Year
DOI
Venue
2018
10.23919/IConAC.2018.8749109
2018 24th International Conference on Automation and Computing (ICAC)
Keywords
Field
DocType
Centrifugal Pump,Motor Current Signal Analysis,Empirical Mode Decomposition,Envelope
Noise reduction,Demodulation,Centrifugal pump,Impeller,Nonlinear system,Control theory,Bearing (mechanical),Motor drive,Engineering,Hilbert–Huang transform
Conference
ISBN
Citations 
PageRank 
978-1-5386-4891-9
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Samir Alabied101.35
Usama Haba201.01
Alsadak Daraz302.03
Fengshou Gu42323.43
Andrew D. Ball524.82