Harmonic wavelet-based data filtering for enhanced machine defect identification
- 26 February 2010
- journal article
- research article
- Published by Elsevier BV in Journal of Sound and Vibration
- Vol. 329 (15), 3203-3217
- https://doi.org/10.1016/j.jsv.2010.02.005
Abstract
A filter construction technique is presented for enhanced defect identification in rotary machine systems. Based on the generalized harmonic wavelet transform, a series of sub-frequency band wavelet coefficients are constructed by choosing different harmonic wavelet parameter pairs. The energy and entropy associated with each sub-frequency band are then calculated. The filtered signal is obtained by choosing the wavelet coefficients whose corresponding sub-frequency band has the maximum energy-to-entropy ratio. Experimental studies using rolling bearings that contain different types of structural defects have confirmed that the developed new technique enables high signal-to-noise ratio for effective machine defect identification.Keywords
This publication has 24 references indexed in Scilit:
- Wavelet analysis of sensor signals for tool condition monitoring: A review and some new resultsInternational Journal of Machine Tools and Manufacture, 2009
- Localization and quantification of vibratory sources: Application to the predictive maintenance of rolling bearingsJournal of Sound and Vibration, 2008
- Fault diagnosis of rotating machinery based on auto-associative neural networks and wavelet transformsJournal of Sound and Vibration, 2007
- A Systematic Sensor-Placement Strategy for Enhanced Defect Detection in Rolling BearingsIEEE Sensors Journal, 2006
- Harmonic wavelets towards the solution of nonlinear PDEComputers & Mathematics with Applications, 2005
- On the optimal sensor placement techniques for a bridge structureEngineering Structures, 2005
- Classification of washing machines vibration signals using discrete wavelet analysis for feature extractionIEEE Transactions on Instrumentation and Measurement, 2002
- Galerkin modelling of the Burgers equation using harmonic waveletsPhysics Letters A, 1997
- Application of orthogonal wavelets to early gear damage detectionMechanical Systems and Signal Processing, 1995
- The wavelet transform, time-frequency localization and signal analysisIEEE Transactions on Information Theory, 1990