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Instantaneous Amplitude-Frequency Feature Extraction for Rotor Fault Based on BEMD and Hilbert Transform
Joint Authors
Lei, Wenping
Huang, Chuanjin
Song, Haijun
Niu, Zhanya
Meng, Yajun
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-19, 19 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-03-12
Country of Publication
Egypt
No. of Pages
19
Main Subjects
Abstract EN
The vibration signals propagating in different directions from rotating machines can contain a variety of characteristic information.
A novel feature extraction method based on bivariate empirical mode decomposition (BEMD) for rotor is proposed to comprehensively extract the fault features.
In this work, the number of signal projection directions is determined through simulation, and the energy end condition based on the energy threshold is increased using BEMD to enhance the decomposition quality.
Mixed vibration signals are generated along two orthogonal directions.
Then, the acquired vibration signal can be decomposed into several intrinsic mode functions (IMFs) at the rotational speed using the BEMD method.
Furthermore, the instantaneous frequency and instantaneous amplitude of the real signals and the imaginary part of the IMF signals are obtained using the Hilbert transform.
The fault features along two and three dimensions can be investigated, providing more comprehensive information to aid in the fault diagnosis of rotor.
Experimental results on oil film oscillation, the oil whirl, the bistability of the rotor, and looseness and rotor rubbing composite fault indicate the effectiveness of the proposed method.
American Psychological Association (APA)
Huang, Chuanjin& Song, Haijun& Lei, Wenping& Niu, Zhanya& Meng, Yajun. 2019. Instantaneous Amplitude-Frequency Feature Extraction for Rotor Fault Based on BEMD and Hilbert Transform. Shock and Vibration،Vol. 2019, no. 2019, pp.1-19.
https://search.emarefa.net/detail/BIM-1210958
Modern Language Association (MLA)
Huang, Chuanjin…[et al.]. Instantaneous Amplitude-Frequency Feature Extraction for Rotor Fault Based on BEMD and Hilbert Transform. Shock and Vibration No. 2019 (2019), pp.1-19.
https://search.emarefa.net/detail/BIM-1210958
American Medical Association (AMA)
Huang, Chuanjin& Song, Haijun& Lei, Wenping& Niu, Zhanya& Meng, Yajun. Instantaneous Amplitude-Frequency Feature Extraction for Rotor Fault Based on BEMD and Hilbert Transform. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-19.
https://search.emarefa.net/detail/BIM-1210958
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1210958