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Shock and Vibration
Volume 2015 (2015), Article ID 215806, 9 pages
Research Article

Fault Diagnosis for Gearbox Based on Improved Empirical Mode Decomposition

1College of Information Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
2Chongqing University, Chongqing 400044, China

Received 30 December 2014; Revised 15 February 2015; Accepted 22 February 2015

Academic Editor: Yanxue Wang

Copyright © 2015 Ling Zhao et al. 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.


The application of the improved empirical mode decomposition (EMD) theory in gearbox fault diagnosis has been studied in this paper, and the transient features of gearbox vibration signals are shown. Based on using EMD, an improved algorithm of orthogonal empirical mode decomposition (OEMD) is put forward and is applied to extract the fault feature. Finally, fault diagnosis application in a gearbox is used as an example to prove the feasibility of the proposed method.