Time-Frequency Analysis Based on Improved Variational Mode Decomposition and Teager Energy Operator for Rotor System Fault Diagnosis
Joint Authors
He, Yu-Ling
Tang, Gui-Ji
Liu, Shangkun
Wang, Xiaolong
Source
Mathematical Problems in Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-11-22
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
A time-frequency analysis method based on improved variational mode decomposition and Teager energy operator (IVMD-TEO) is proposed for fault diagnosis of turbine rotor.
Variational mode decomposition (VMD) can decompose a multicomponent signal into a number of band-limited monocomponent signals and can effectively avoid model mixing.
To determine the number of monocomponents adaptively, VMD is improved using the correlation coefficient criterion.
Firstly, IVMD algorithm is used to decompose a multicomponent signal into a number of monocompositions adaptively.
Second, all the monocomponent signals’ instantaneous amplitude and instantaneous frequency are demodulated via TEO, respectively, because TEO has fast and high precision demodulation advantages to monocomponent signal.
Finally, the time-frequency representation of original signal is exhibited by superposing the time-frequency representations of all the monocomponents.
The analysis results of simulation signal and experimental turbine rotor in rising speed condition demonstrate that the proposed method has perfect multicomponent signal decomposition capacity and good time-frequency expression.
It is a promising time-frequency analysis method for rotor fault diagnosis.
American Psychological Association (APA)
Liu, Shangkun& Tang, Gui-Ji& Wang, Xiaolong& He, Yu-Ling. 2016. Time-Frequency Analysis Based on Improved Variational Mode Decomposition and Teager Energy Operator for Rotor System Fault Diagnosis. Mathematical Problems in Engineering،Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1111780
Modern Language Association (MLA)
Liu, Shangkun…[et al.]. Time-Frequency Analysis Based on Improved Variational Mode Decomposition and Teager Energy Operator for Rotor System Fault Diagnosis. Mathematical Problems in Engineering No. 2016 (2016), pp.1-9.
https://search.emarefa.net/detail/BIM-1111780
American Medical Association (AMA)
Liu, Shangkun& Tang, Gui-Ji& Wang, Xiaolong& He, Yu-Ling. Time-Frequency Analysis Based on Improved Variational Mode Decomposition and Teager Energy Operator for Rotor System Fault Diagnosis. Mathematical Problems in Engineering. 2016. Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1111780
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1111780