MATEC Web of Conferences
Volume 20, 2015AVE2014 - 4ième Colloque Analyse Vibratoire Expérimentale / Experimental Vibration Analysis
|Number of page(s)||7|
|Section||Vibration-based condition monitoring|
|Published online||27 January 2015|
Monitoring gears by vibration measurements: Lempel-Ziv complexity and Approximate Entropy as diagnostic tools
Department of Mechanical Engineering, École de Technologie Supérieure 1100, Notre-Dame street West, Montreal, H3C 1K3, Quebec, Canada
a Corresponding author: email@example.com
Unexpected failures of industrial gearboxes may cause significant economic losses. It is therefore important to detect early fault symptoms. This paper introduces signal processing methods based on approximate entropy (ApEn) and Lempel-Ziv Complexity (LZC) for defect detection of gears. Both methods are statistical measurements exploring the regularity of a vibratory signal. Applied to gear signals, the parameter selection of ApEn and LZC calculation are first numerically investigated, and appropriate parameters are suggested. Finally, an experimental study is presented to investigate the effectiveness of these indicators. The results demonstrate that ApEn and LZC provide alternative features for signal processing. A new methodology is presented combining both Kurtosis and LZC for early detection of faults. The results show that this proposed method may be used as an effective tool for early detection of gear faults.
© Owned by the authors, published by EDP Sciences, 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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