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Gear dynamics monitoring using discrete wavelet transformation and multi-layer perceptron neural networks
Sanz, Javier and Perera Velamazán, Ricardo and Huerta Gomez de Merodio, M. Consuelo
Gear dynamics monitoring using discrete wavelet transformation and multi-layer perceptron neural networks.
"Applied Soft Computing", v. 12
This paper presents a multi-stage algorithm for the dynamic condition monitoring of a gear. The algorithm provides information referred to the gear status (fault or normal condition) and estimates the mesh stiffness per shaft revolution in case that any abnormality is detected. In the first stage, the analysis of coefficients generated through discrete wavelet transformation (DWT) is proposed as a fault detection and localization tool. The second stage consists in establishing the mesh stiffness reduction associated with local failures by applying a supervised learning mode and coupled with analytical models. To do this, a multi-layer perceptron neural network has been configured using as input features statistical parameters sensitive to torsional stiffness decrease and derived from wavelet transforms of the response signal. The proposed method is applied to the gear condition monitoring and results show that it can update the mesh dynamic properties of the gear on line.
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