DCNN-Based multi-signal induction motor fault diagnosis

Siyu Shao, Ruqiang Yan, Yadong Lu, Peng Wang, Robert X. Gao

Research output: Contribution to journalArticlepeer-review

263 Scopus citations


Deep learning (DL) architecture, which exploits multiple hidden layers to learn hierarchical representations automatically from massive input data, presents a promising tool for characterizing fault conditions. This paper proposes a DL-based multi-signal fault diagnosis method that leverages the powerful feature learning ability of a convolutional neural network (CNN) in images. The proposed deep model is able to learn from multiple types of sensor signals simultaneously so that it can achieve robust performance and finally realize accurate induction motor fault recognition. First, the acquired sensor signals are converted to time-frequency distribution (TFD) by wavelet transform. Then, a deep CNN is applied to learning discriminative representations from the TFD images. Since then, a fully connected layer in deep architecture gives the prediction of induction motor condition based on learned features. In order to verify the effectiveness of the designed deep model, experiments are carried out on a machine fault simulator where both vibration and current signals are analyzed. Experimental results indicate that the proposed method outperforms traditional fault diagnosis methods, hence, demonstrating effectiveness in induction motor application. Compared with conventional methods that rely on delicate features extracted by experienced experts, the proposed deep model is able to automatically learn and select suitable features that contribute to accurate fault diagnosis. Compared with single-signal input, the multi-signal model has more accurate and stable performance and overcomes the overfitting problem to some degree.

Original languageEnglish
Article number8751989
Pages (from-to)2658-2669
Number of pages12
JournalIEEE Transactions on Instrumentation and Measurement
Issue number6
StatePublished - Jun 2020

Bibliographical note

Publisher Copyright:
© 1963-2012 IEEE.


  • Convolutional neural network (CNN)
  • deep learning (DL)
  • fault diagnosis
  • induction motor
  • multi-signal model

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering


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