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Sensors 2013, 13(1), 1183-1209; doi:10.3390/s130101183
Article

Customized Multiwavelets for Planetary Gearbox Fault Detection Based on Vibration Sensor Signals

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Received: 27 November 2012; in revised form: 22 December 2012 / Accepted: 8 January 2013 / Published: 18 January 2013
(This article belongs to the Section Physical Sensors)
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Abstract: Planetary gearboxes exhibit complicated dynamic responses which are more difficult to detect in vibration signals than fixed-axis gear trains because of the special gear transmission structures. Diverse advanced methods have been developed for this challenging task to reduce or avoid unscheduled breakdown and catastrophic accidents. It is feasible to make fault features distinct by using multiwavelet denoising which depends on the feature separation and the threshold denoising. However, standard and fixed multiwavelets are not suitable for accurate fault feature detections because they are usually independent of the measured signals. To overcome this drawback, a method to construct customized multiwavelets based on the redundant symmetric lifting scheme is proposed in this paper. A novel indicator which combines kurtosis and entropy is applied to select the optimal multiwavelets, because kurtosis is sensitive to sharp impulses and entropy is effective for periodic impulses. The improved neighboring coefficients method is introduced into multiwavelet denoising. The vibration signals of a planetary gearbox from a satellite communication antenna on a measurement ship are captured under various motor speeds. The results show the proposed method could accurately detect the incipient pitting faults on two neighboring teeth in the planetary gearbox.
Keywords: planetary gearbox; fault detection; vibration sensor signals; customized multiwavelets; redundant symmetric lifting schemes; improved neighboring coefficients planetary gearbox; fault detection; vibration sensor signals; customized multiwavelets; redundant symmetric lifting schemes; improved neighboring coefficients
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.

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MDPI and ACS Style

Sun, H.; Zi, Y.; He, Z.; Yuan, J.; Wang, X.; Chen, L. Customized Multiwavelets for Planetary Gearbox Fault Detection Based on Vibration Sensor Signals. Sensors 2013, 13, 1183-1209.

AMA Style

Sun H, Zi Y, He Z, Yuan J, Wang X, Chen L. Customized Multiwavelets for Planetary Gearbox Fault Detection Based on Vibration Sensor Signals. Sensors. 2013; 13(1):1183-1209.

Chicago/Turabian Style

Sun, Hailiang; Zi, Yanyang; He, Zhengjia; Yuan, Jing; Wang, Xiaodong; Chen, Lue. 2013. "Customized Multiwavelets for Planetary Gearbox Fault Detection Based on Vibration Sensor Signals." Sensors 13, no. 1: 1183-1209.



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