Application of Self-Adaptive Wavelet Ridge Demodulation Method Based on LCD to Incipient Fault Diagnosis
Joint Authors
Cheng, Junsheng
Luo, Songrong
Fu, Jianping
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-06-21
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
When a local defect occurs in gearbox, the vibration signals present as the form of multicomponent amplitude modulation and frequency modulation (AM-FM).
Demodulation analysis is an effective way for this kind of signal.
A self-adaptive wavelet ridge demodulation method based on LCD is proposed in this paper.
Firstly, multicomponent AM-FM signal is decomposed into series of intrinsic scale components (ISCs) and the special intrinsic scale component is selected in order to decrease the lower frequency background noise.
Secondly, the genetic algorithm is employed to optimize wavelet parameters according to the inherent characteristics of signal; thirdly, self-adaptive wavelet ridge demodulation wavelet for the selected ISC component is performed to get instantaneous amplitude (IA) or instantaneous frequency (IF).
Lastly, the characteristics frequency can be obtained to identify the working state or failure information from its spectrum.
By two simulation signals, the proposed method was compared with various existing demodulation methods; the simulation results show that it has higher accuracy and higher noise tolerant performance than others.
Furthermore, the proposed method was applied to incipient fault diagnosis for gearbox and the results show that it is simple and effective.
American Psychological Association (APA)
Luo, Songrong& Cheng, Junsheng& Fu, Jianping. 2015. Application of Self-Adaptive Wavelet Ridge Demodulation Method Based on LCD to Incipient Fault Diagnosis. Shock and Vibration،Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1078321
Modern Language Association (MLA)
Luo, Songrong…[et al.]. Application of Self-Adaptive Wavelet Ridge Demodulation Method Based on LCD to Incipient Fault Diagnosis. Shock and Vibration No. 2015 (2015), pp.1-13.
https://search.emarefa.net/detail/BIM-1078321
American Medical Association (AMA)
Luo, Songrong& Cheng, Junsheng& Fu, Jianping. Application of Self-Adaptive Wavelet Ridge Demodulation Method Based on LCD to Incipient Fault Diagnosis. Shock and Vibration. 2015. Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1078321
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1078321