Journal
KNOWLEDGE-BASED SYSTEMS
Volume 165, Issue -, Pages 474-487Publisher
ELSEVIER
DOI: 10.1016/j.knosys.2018.12.019
Keywords
Adversarial training; Generative adversarial network; Deep convolutional neural network; Intelligent fault diagnosis; Rotating machinery
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Funding
- National Natural Science Foundation of China [11572167, 51174273]
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In recent years, deep learning has become an emerging research orientation in the field of intelligent monitoring and fault diagnosis for industry equipment. Generally, the success of supervised deep models is largely attributed to a mass of typically labeled data, while it is often limited in real diagnosis tasks. In addition, the diagnostic model trained with data from limited conditions may generalize poorly for conditions not observed during training. To tackle these challenges, adversarial learning is introduced as a regularization into the convolutional neural network (CNN), and a novel deep adversarial convolutional neural network (DACNN) is accordingly proposed in this paper. By adding an additional discriminative classifier, an adversarial learning framework can be developed to train the convolutional blocks with the split data subsets, leading to a minimax two-player game. This process contributes to making the feature representation robust, boosting the generalization ability of the trained model as well as avoiding overfitting with a small size of labeled samples. The comparison studies with respect to conventional deep models on two fault datasets demonstrate the applicability and superiority of proposed method. (C) 2018 Elsevier B.V. All rights reserved.
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