一种基于复合生成对抗网络的轴承故障诊断方法

By constructing a composite generative adversarial network model, adversarial samples with fault characteristics are generated, which solves the problems of vulnerability of deep neural networks to attacks and data imbalance in bearing fault diagnosis, and achieves high-precision and low-cost fault diagnosis results.

CN117168814BActive Publication Date: 2026-07-17SHANDONG COMP SCI CENTNAT SUPERCOMP CENT IN JINAN +2

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG COMP SCI CENTNAT SUPERCOMP CENT IN JINAN
Filing Date
2023-09-04
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Deep neural networks are vulnerable to adversarial attacks in bearing fault diagnosis, and data class imbalance leads to reduced classification accuracy, making it difficult for existing technologies to achieve accurate and efficient fault diagnosis.

Method used

A composite generative adversarial network model is constructed. Adversarial examples are generated through a first generator and a second generator. An attention mechanism and a two-dimensional convolutional layer are combined to expand the dataset for training, generating adversarial examples with fault features for training the fault classifier.

Benefits of technology

It improves the generalization ability of the fault diagnosis model, achieves high-precision and low-cost fault type classification, solves the problem of insufficient data samples, and has good diagnostic testing performance.

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Abstract

本发明涉及轴承故障诊断技术领域,具体涉及一种基于复合生成对抗网络的轴承故障诊断方法;包含如下步骤:采集原始真实轴承故障数据作为训练样本数据;构建由两组生成器、两组判别器和目标攻击网络组成的复合生成对抗网络模型;交替训练两组生成器、两组判别器,将训练后的对抗样本加入原始数据集进行数据扩充,然后使用扩充后的原始数据集训练故障分类器,最后进行故障诊断。本发明提供的轴承故障诊断方法生成的故障对抗样本可有效扩充数据集,使用组合数据集对故障分类器进行训练,能提高故障分类器的泛化能力,很好地解决了故障诊断中数据样本不足的问题。
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