Research on Analog Circuit Soft Fault Diagnosis Method Based on Mathematical Morphology Fractal Dimension

被引：4

作者：

Lu, Xinmiao ^{[1
]}

Yang, Cunfang ^{[1
]}

Wu, Qiong ^{[1
,2
]}

Wang, Jiaxu ^{[1
]}

Lu, Zihan ^{[1
]}

Sun, Shuai ^{[1
]}

Liu, Kaiyi ^{[3
]}

Shao, Dan ^{[4
]}

机构：

[1] Harbin Univ Sci & Technol, Sch Measurement Control Technol & Commun Engn, Harbin 150080, Peoples R China

[2] Heilongjiang Network Space Res Ctr, Harbin 150090, Peoples R China

[3] Harbin Meteorol Bur, Harbin 150028, Peoples R China

[4] Harbin Vocat Coll Sci & Technol, Harbin 150399, Peoples R China

来源：

ELECTRONICS | 2023年 / 12卷 / 01期

关键词：

mathematical morphology fractal dimension; kernel principal component analysis; variational modal decomposition; feature extraction;

D O I：

10.3390/electronics12010184

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

It is difficult for traditional circuit-fault feature-extraction methods to accurately distinguish between nonlinear analog-circuit faults and analog-circuit faults with high fault rates and high diagnostic costs. To solve this problem, this paper proposes a method of mathematical morphology fractal dimension (VMD-MMFD) based on variational mode decomposition for soft-fault feature extraction in analog circuits. First, the signal is decomposed into variational modes to suppress the influence of environmental noise, and multiple high-dimensional eigenmode functions with different center frequencies are obtained. The fractal dimension of the signal feature information component IMF is calculated, and then, KPCA (Kernel Principal Component Analysis) is used to remove the overlapping and redundant parts of the data. The fault set obtained is used as the basis for judging the working state and the fault type of the circuit. The experimental results of the simulation circuits show that this method can be effectively used for circuit-fault diagnosis.

引用

页数：21

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