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An End-to-End Mutually Exclusive Autoencoder Method for Analog Circuit Fault Diagnosis

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Fault diagnosis of analog circuits is a classical problem, and its difficulty lies in the similarity between fault features. To address the issue, an end-to-end mutually exclusive autoencoder (EEMEAE) fault diagnosis method for analog circuits is proposed. In order to make full use of the advantages of Fourier transform(FT) and wavelet packet transform(WPT) for extracting signal features, the original signals processed by FT and WPT are fed into two autoencoders respectively. The hidden layers of the autoencoders are mutually exclusive by Euclidean distance restriction. And the reconstruction layer is replaced by a softmax layer and 1-norm combined with cross-entropy that can effectively enhance the discriminability of features. Finally, the learning rate is adjusted adaptively by the difference of loss function to further improve the convergence speed and diagnostic performance of the model. The proposed method is verified by the simulation circuit and actual circuit and the experimental results illustrate that it is effective.

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This work is supported by the National Natural Science Foundation of China  [No.61661013] and Innovation Project of GUET Graduate Education [2021YCXS132 and YCSW2022281]. (Corresponding author: Chunquan Li).

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Shang, Y., Wei, S., Li, C. et al. An End-to-End Mutually Exclusive Autoencoder Method for Analog Circuit Fault Diagnosis. J Electron Test 40, 5–18 (2024).

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