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Author:

Wang, Pengxin (Wang, Pengxin.) | Song, Liuyang (Song, Liuyang.) | Wang, Huaqing (Wang, Huaqing.) | Han, Changkun (Han, Changkun.) | Guo, Xudong (Guo, Xudong.) | Cui, Lingli (Cui, Lingli.)

Indexed by:

EI Scopus SCIE

Abstract:

Convolutional neural networks (CNNs) have weight-sharing and feature-learning abilities, and can efficiently and effectively be used for the health monitoring of industrial equipment. However, the pooling operation in a typical CNN can cause the loss of valuable impulse features during data down-sampling. We propose grouping sparse filtering (GSF) to overcome this problem. Instead of using a pooling operation, the GSF splits the channels of features obtained after convolution into equal-length groups. A feature selector with a feature aggregation function based on the channel importance factors and a lasso constraint is used to filter the groups to perform down-sampling. The GSF method preserves the impulse features due to the block sparsity of the vibration signal. Theoretical analysis demonstrates that the GSF has a similar computational complexity to using a pooling layer in a CNN for the same number of layers. Two experimental studies were conducted using data from a laboratory test and industrial environments. The experimental results show that the 1D-CNN with GSF provides better performance for retaining the impulse features of the rotating machinery signals and higher fault identification accuracy than a CNN with a pooling layer.

Keyword:

intelligent fault diagnosis convolutional neural networks grouping sparse filtering feature selector

Author Community:

  • [ 1 ] [Wang, Pengxin]Beijing Univ Chem Technol, Coll Mech Elect Engn, Beijing Key Lab High End Mech Equipment Hlth Moni, Beijing 100029, Peoples R China
  • [ 2 ] [Song, Liuyang]Beijing Univ Chem Technol, Coll Mech Elect Engn, Beijing Key Lab High End Mech Equipment Hlth Moni, Beijing 100029, Peoples R China
  • [ 3 ] [Wang, Huaqing]Beijing Univ Chem Technol, Coll Mech Elect Engn, Beijing Key Lab High End Mech Equipment Hlth Moni, Beijing 100029, Peoples R China
  • [ 4 ] [Han, Changkun]Beijing Univ Chem Technol, Coll Mech Elect Engn, Beijing Key Lab High End Mech Equipment Hlth Moni, Beijing 100029, Peoples R China
  • [ 5 ] [Guo, Xudong]Beijing Univ Chem Technol, Coll Mech Elect Engn, Beijing Key Lab High End Mech Equipment Hlth Moni, Beijing 100029, Peoples R China
  • [ 6 ] [Cui, Lingli]Beijing Univ Technol, Beijing Engn Res Ctr Precis Measurement Technol &, Beijing 100124, Peoples R China

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Source :

MEASUREMENT SCIENCE AND TECHNOLOGY

ISSN: 0957-0233

Year: 2022

Issue: 6

Volume: 33

2 . 4

JCR@2022

2 . 4 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:49

JCR Journal Grade:3

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 6

SCOPUS Cited Count: 7

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 11

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