Development of a new signal processing diagnostic tool for vibration signals acquired in transient conditions
Chatterton, Steven, Pennacchi, Paolo, Ricci, Roberto, Borghesani, Pietro, & Vania, Andrea (2013) Development of a new signal processing diagnostic tool for vibration signals acquired in transient conditions. Chemical Engineering Transactions, 33, pp. 61-66.
The diagnostics of mechanical components operating in transient conditions is still an open issue, in both research and industrial field. Indeed, the signal processing techniques developed to analyse stationary data are not applicable or are affected by a loss of effectiveness when applied to signal acquired in transient conditions. In this paper, a suitable and original signal processing tool (named EEMED), which can be used for mechanical component diagnostics in whatever operating condition and noise level, is developed exploiting some data-adaptive techniques such as Empirical Mode Decomposition (EMD), Minimum Entropy Deconvolution (MED) and the analytical approach of the Hilbert transform. The proposed tool is able to supply diagnostic information on the basis of experimental vibrations measured in transient conditions. The tool has been originally developed in order to detect localized faults on bearings installed in high speed train traction equipments and it is more effective to detect a fault in non-stationary conditions than signal processing tools based on spectral kurtosis or envelope analysis, which represent until now the landmark for bearings diagnostics.
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|Item Type:||Journal Article|
|Keywords:||Bearings diagnostics, Empirical mode decomposition, Minimum entropy deconvolution|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Signal Processing (090609)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Dynamics Vibration and Vibration Control (091304)
|Divisions:||Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2013, AIDIC Servizi S.r.l.|
|Deposited On:||21 Jan 2014 23:36|
|Last Modified:||28 Jul 2014 02:43|
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