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Acta Armamentarii ›› 2021, Vol. 42 ›› Issue (2): 356-369.doi: 10.3969/j.issn.1000-1093.2021.02.013

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Fault Diagnosis of Analog Circuits Based on Improved Multilayer Kernel Extreme Learning Machine

ZHU Min1,2, XU Aiqiang2, XU Qing3, LI Ruifeng2   

  1. (1.Unit 91576 of PLA, Ningbo 315020, Zhejiang, China; 2.Naval Aviation University, Yantai 264001, Shandong, China;3.Unit 92228 of PLA, Beijing 100010, China)
  • Online:2021-03-27

Abstract: A multi-layer simplex optimized kernel extreme learning machine (ML-SOKELM) method is proposed based on the testability application framework of simulation-based diagnostic model, which combines the deep learning and kernel-based method. ML-SOKELM method is used to to improve the practicability and accuracy of multi-fault diagnosis of analog circuits. The multi-layer kernel extreme learning machine (ML-KELM) extracts the fault features layer by layer and gets the diagnosed results with original data after primary selection. During the training process, the proposed method is used to optimize the kernel parameters of all layers. The diagnosed results show that, compared with the common deep learning methods, ML-SOKELM methed is less dependent on subjective experience and achieves considerable accuracy while greatly shortening the training time. ML-SOKELM can achieve higher diagnostic accuracy under different ambiguity thresholds in comparison with popular kernel-based methods.

Key words: analogcircuit, kernelextremelearningmachine, deeplearning, faultdiagnosis, ambiguitygroup

CLC Number: