Rolling bearing fault detection based on local characteristic-scale decomposition and teager energy operator

Liu Hongmei1, Chen Yu2

School of Reliability and Systems Engineering, Beihang University, Beijing, China

1Corresponding author

E-mail: 118920696669@163.com, 2liuhongmei@buaa.edu.cn

Received 1 October 2017; accepted 10 October 2017

DOI https://doi.org/10.21595/vp.2017.19246

 

Abstract. In this paper, a rolling bearing fault detection method based on Local Characteristic‑scale Decomposition (LCD) and Teager Energy operator (TEO) is proposed. Vibration signals is related to the bearing fault. However, the vibration signal of rolling bearing is nonlinear and has multiple components, which makes it difficult to analyze the signals by using traditional method such as the fast Fourier transform (FFT). LCD, a recently developed signal decomposition method, is especially capable for dealing with the complex signal by decomposing it into several intrinsic scale components (ISC). Furthermore, to extract fault diagnosis of the components, we used TEO to demodulate each ISC. The energy of fault feature frequencies was extracted as fault vector. The result shows that the method successfully diagnoses bearing fault.

Keywords: rolling bearing, fault diagnosis, local characteristic-scale decomposition, teager energy operator.

References

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Cite this article

Hongmei Liu, Yu Chen Rolling bearing fault detection based on local characteristic‑scale decomposition and teager energy operator. Vibroengineering PROCEDIA, Vol. 14, 2017, p. 126‑129.

 

© JVE International Ltd. Vibroengineering PROCEDIA. Oct 2017, Vol. 14. ISSN 2345-0533