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A Novel Approach of Feature Extraction for Analog Circuit Fault Diagnosis Based on WPD-LLE-CSA

  • Wang, Yuehai (Dept. of Electronic Information Engineering, North China University of Technology) ;
  • Ma, Yuying (Dept. of Electronic Information Engineering, North China University of Technology) ;
  • Cui, Shiming (Dept. of Computer Science, North China University of Technology) ;
  • Yan, Yongzheng (Dept. of Computer Science, North China University of Technology)
  • Received : 2018.02.22
  • Accepted : 2018.06.12
  • Published : 2018.11.01

Abstract

The rapid development of large-scale integrated circuits has brought great challenges to the circuit testing and diagnosis, and due to the lack of exact fault models, inaccurate analog components tolerance, and some nonlinear factors, the analog circuit fault diagnosis is still regarded as an extremely difficult problem. To cope with the problem that it's difficult to extract fault features effectively from masses of original data of the nonlinear continuous analog circuit output signal, a novel approach of feature extraction and dimension reduction for analog circuit fault diagnosis based on wavelet packet decomposition, local linear embedding algorithm, and clone selection algorithm (WPD-LLE-CSA) is proposed. The proposed method can identify faulty components in complicated analog circuits with a high accuracy above 99%. Compared with the existing feature extraction methods, the proposed method can significantly reduce the quantity of features with less time spent under the premise of maintaining a high level of diagnosing rate, and also the ratio of dimensionality reduction was discussed. Several groups of experiments are conducted to demonstrate the efficiency of the proposed method.

Acknowledgement

Supported by : National Natural Science Foundation of China

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