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Towards automatic d...
Towards automatic detection of local bearing defects in rotating machines
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- Ericsson, Stefan (författare)
- Luleå tekniska universitet
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- Grip, Niklas (författare)
- Luleå tekniska universitet,Matematiska vetenskaper
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- Johansson, E. (författare)
- Luleå tekniska universitet
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- Persson, Lars-Erik (författare)
- Luleå tekniska universitet
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- Sjoberg, R. (författare)
- Nåiden Teknik AB, Luleå, Sweden
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- Strömberg, Jan-Olov (författare)
- KTH,Matematik (Avd.),Department of Mathematics/NADA, Royal Institute of Technology, Stockholm, Sweden
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(creator_code:org_t)
- Elsevier BV, 2005
- 2005
- Engelska.
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Ingår i: Mechanical systems and signal processing. - : Elsevier BV. - 0888-3270 .- 1096-1216. ; 19:3, s. 509-535
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Abstract
Ämnesord
Stäng
- In this paper we derive and compare several different vibration analysis techniques for automatic detection of local defects in bearings. Based on a signal model and a discussion on to what extent a good bearing monitoring method should trust it, we present several analysis tools for bearing condition monitoring and conclude that wavelets are especially well suited for this task. Then we describe a large-scale evaluation of several different automatic bearing monitoring methods using 103 laboratory and industrial environment test signals for which the true condition of the bearing is known from visual inspection. We describe the four best performing methods in detail (two wavelet-based, and two based on envelope and periodisation techniques). In our basic implementation, without using historical data or adapting the methods to (roughly) known machine or signal parameters, the four best methods had 9-13% error rate and are all good candidates for further fine-tuning and optimisation. Especially for the wavelet-based methods, there are several potentially performance improving additions, which we finally summarise into a guiding list of suggestion.
Ämnesord
- NATURVETENSKAP -- Matematik -- Matematisk analys (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Mathematical Analysis (hsv//eng)
Nyckelord
- bearing
- condition monitoring
- vibration analysis
- signal model
- prediction
- classification
- wavelet
- morlet
- continuous wavelet transform
- wavelet packets
- matched filter
- envelope method
- periodisation
- rolling element bearings
- vibration analysis
- fault-diagnosis
- identification
- extraction
- damage
- gear
- Matematik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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