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Permanent link (DOI): https://doi.org/10.7939/R3S46HB7Q

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Dynamics Based Vibration Signal Modeling and Fault Detection of Planetary Gearboxes Open Access

Descriptions

Other title
Subject/Keyword
crack modeling
fault detection
mesh stiffness
gearbox
vibration analysis
gooth fault
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Liang, Xihui
Supervisor and department
Zuo, Ming J. (Mechanical Engineering)
Examining committee member and department
Koch, Bob (Mechanical Engineering)
Ma, Yongsheng (Mechanical Engineering)
Zuo, Ming J. (Mechanical Engineering)
Parker, Robert G. (Mechanical Engineering)
Moussa, Walied (Mechanical Engineering)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2016-02-01T13:31:58Z
Graduation date
2016-06
Degree
Doctor of Philosophy
Degree level
Doctoral
Abstract
Vibration analysis has been widely used to detect gear tooth fault inside a planetary gearbox. However, the vibration characteristics of a planetary gearbox are very complicated. Inside a planetary gearbox, there are multiple vibration sources as several sun-planet gear pairs and several ring-planet gear pairs are meshing simultaneously. In addition, due to the rotation of the carrier, distance varies between vibration sources and a transducer installed on gearbox housing. This thesis aims to simulate and understand the vibration signals of a planetary gear set, and then propose a signal processing method to detect gear tooth fault more effectively. First, an analytical method derives the equations of a healthy planetary gear set’s time-varying gear mesh stiffness. Then, a gear tooth crack growth model is proposed and equations are derived to quantify the effect of gear tooth crack on the time-varying mesh stiffness. After that, a two-dimensional lumped-mass model is developed to simulate the vibration source signals of a planetary gear set; an analytical model is proposed to represent the effect of transmission path; and the resultant vibration signals of a planetary gear set at a sensor location are generated by considering multiple vibration sources and the effect of transmission path. Finally, a signal decomposition method is proposed to detect a single tooth crack in a single planet gear and experimental validation is performed. The methods proposed in this thesis help us understand the vibration properties of planetary gearboxes and give insights into developing new signal processing methods for gear tooth fault detection.
Language
English
DOI
doi:10.7939/R3S46HB7Q
Rights
This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for the purpose of private, scholarly or scientific research. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
Citation for previous publication
X. Liang, M. J. Zuo, and T. H. Patel, “Evaluating the Time-varying Mesh Stiffness of a Planetary Gear Set Using the Potential Energy Method,” Proc. Inst. Mech. Eng. Part C J. Mech. Eng. Sci., vol. 228, no. 3, pp. 535–547, Feb. 2014.X. Liang, M. J. Zuo, and Y. Guo, “Evaluating the Time-Varying Mesh Stiffness of a Planetary Gear Set Using the Potential Energy Method,” in Proceedings of the 7th World Congress on Engineering Asset Management (WCEAM 2012), Springer International Publishing, 2015, pp. 365–374.X. Liang, M. J. Zuo, and M. Pandey, “Analytically Evaluating the Influence of Crack on the Mesh Stiffness of a Planetary Gear Set,” Mech. Mach. Theory, vol. 76, pp. 20–38, Jun. 2014.X. Liang and M. J. Zuo, “Dynamic Simulation of a Planetary Gear Set and Estimation of Fault Growth on the Sun Gear,” in Proceedings of 2013 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE), 2013, pp. 1667–1672.X. Liang, M. J. Zuo, and M. R. Hoseini, “Vibration Signal Modeling of a Planetary Gear Set for Tooth Crack Detection,” Eng. Fail. Anal., vol. 48, pp. 185–200, Feb. 2015.X. Liang, M. J. Zuo, and M. R. Hoseini, “Understanding Vibration Properties of a Planetary Gear Set for Fault Detection,” in Proceedings of 2014 IEEE Conference on Prognostics and Health Management (PHM), 2014, pp. 1–6.X. Liang, M. J. Zuo, and L. Liu, “A Windowing and Mapping Strategy for the Gear Fault Detection of a Planetary Gearbox.” Mech. Syst. Signal Pr., submitted: 06-Jun-2015.X. Liang and M. J. Zuo, “Investigating Vibration Properties of a Planetary Gear Set with a Cracked Tooth in a Planet Gear,” in Proceedings of 2014 Annual Conference of the Prognostics and Health Management Society, Fort Worth, Texas, 2014, pp. 1–8.

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