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Title of Paper:An investigation into frequency resolution estimation model for impact signal analysis by using Hilbert spectrum and condition classification for marine diesel engine
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Date of Publication:2014-09-01
Journal:JOURNAL OF VIBROENGINEERING
Included Journals:SCIE、EI
Volume:16
Issue:6
Page Number:2874-2893
ISSN No.:1392-8716
Key Words:Hilbert spectrum; frequency resolution; estimation model; instantaneous impact signal
Abstract:In this paper, frequency resolution determination method is investigated according to Hilbert spectrum performance for impact signal analysis. A new constructed performance estimation model for the best frequency resolution is put forward in this research for the impact signal pattern recognition. Different parameters in the time-frequency distribution by using Hilbert spectrum are considered in this estimation model for the best frequency resolution determination. To verify the effectiveness of this estimation model, numerical simulation is used for Hilbert spectrum construction analysis. At the same time, different marine diesel engine working condition signals analysis are also used to illustrate the methodology developed in this research and verify the effectiveness. It can be concluded that this method can contribute the development for impact signal analysis by using Hilbert spectrum.
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