Vibration analysis with lifting scheme and generalized cross validation in fault diagnosis of water hydraulic system

Autor:	G.H. Lim, H.X. Chen, Patrick S. K. Chua
Rok vydání:	2007
Předmět:	Engineering Acoustics and Ultrasonics Hydraulic motor Lifting scheme business.industry Mechanical Engineering Feature extraction Control engineering Impulse (physics) Condensed Matter Physics Cross-validation Vibration Wavelet Mechanics of Materials Control theory Hydraulic machinery business
Zdroj:	Journal of Sound and Vibration. 301:458-480
ISSN:	0022-460X
DOI:	10.1016/j.jsv.2006.08.041
Popis:	This paper presents a novel method to analyze the vibration signals in the fault diagnosis of water hydraulic motor. The method of feature extraction from the vibration signals of the water hydraulic motor based on the second-generation wavelet is investigated. The second-generation wavelet consists of a lifting scheme. The algorithm and method of multi-decomposition based on the lifting scheme for vibration analysis is developed. The denoise method for the vibration signals is proposed on the lifting scheme and the generalized cross validation (GCV). The relationship between the signal-to-noise (SNR) and GCV is presented. The corrupted simulated signal is used to test the proposed denoise algorithm. The method for extracting the feature values from the impulse vibration signals based on the statistical method is studied. The results show the applicability of this method for fault diagnosis of a water hydraulic motor.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::033baff7614679a7f027cbb7ed693ddb https://doi.org/10.1016/j.jsv.2006.08.041 Zobrazit plný text záznamu Full Text from ScienceDirect