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Sensors 2016, 16(11), 1837; doi:10.3390/s16111837

Feature Mining and Health Assessment for Gearboxes Using Run-Up/Coast-Down Signals

1
School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2
State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, China
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 30 September 2016 / Revised: 27 October 2016 / Accepted: 28 October 2016 / Published: 2 November 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [7546 KB, uploaded 2 November 2016]   |  

Abstract

Vibration signals measured in the run-up/coast-down (R/C) processes usually carry rich information about the health status of machinery. However, a major challenge in R/C signals analysis lies in how to exploit more diagnostic information, and how this information could be properly integrated to achieve a more reliable maintenance decision. Aiming at this problem, a framework of R/C signals analysis is presented for the health assessment of gearbox. In the proposed methodology, we first investigate the data preprocessing and feature selection issues for R/C signals. Based on that, a sparsity-guided feature enhancement scheme is then proposed to extract the weak phase jitter associated with gear defect. In order for an effective feature mining and integration under R/C, a generalized phase demodulation technique is further established to reveal the evolution of modulation feature with operating speed and rotation angle. The experimental results indicate that the proposed methodology could not only detect the presence of gear damage, but also offer a novel insight into the dynamic behavior of gearbox. View Full-Text
Keywords: generalized phase demodulation; run-up/coast-down analysis; feature mining and integration; gearbox health assessment; phasogram generalized phase demodulation; run-up/coast-down analysis; feature mining and integration; gearbox health assessment; phasogram
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhao, M.; Lin, J.; Miao, Y.; Xu, X. Feature Mining and Health Assessment for Gearboxes Using Run-Up/Coast-Down Signals. Sensors 2016, 16, 1837.

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