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• W2049368737 endingPage "1383" @default.
• W2049368737 startingPage "1372" @default.
• W2049368737 abstract "Conventional time-frequency analysis (TFA) methods have played an important role in characterizing the TF pattern of nonstationary signals. In this paper, a new TFA algorithm, called matching demodulation transform (MDT), is introduced to extract the highly oscillatory frequency modulation (FM) feature of rotor rub-impact fault. When a rub-impact fault occurs in the rotor system, vibration signals will present the FM feature because of the periodic rub-impact between the stator and the rotor. Through a partial demodulation and stepwise refinement procedure, the highly oscillatory FM feature is represented with satisfactory energy concentration in the time-frequency plane. The validity and practical utility of the MDT is then demonstrated on an experimental rotor system and a practical heavy oil catalytic cracking machine set with a rotor rub-impact fault. The analysis results show that the MDT is powerful in the analysis of FM signals and is an effective tool for the feature extraction of rub-impact faults." @default.
• W2049368737 created "2016-06-24" @default.
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• W2049368737 date "2014-05-01" @default.
• W2049368737 modified "2023-09-27" @default.
• W2049368737 title "Matching Demodulation Transform With Application to Feature Extraction of Rotor Rub-Impact Fault" @default.
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• W2049368737 doi "https://doi.org/10.1109/tim.2013.2283552" @default.
• W2049368737 hasPublicationYear "2014" @default.
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