滚动轴承故障诊断通过时间图卷积融合
Fan Li1,2, Yunfeng Li1,2, Dongfeng Wang3
1School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003, China.
Sensors (Basel, Switzerland)
|July 12, 2025
概括
一个新的时间图卷积融合网络 (T-GCFN) 改善了滚动轴承故障诊断. 这种方法通过融合时间和频率域特征来提高小样本条件的准确性.
科学领域:
- 机械工程 机械工程
- 人工智能的人工智能
- 信号处理 信号处理
背景情况:
- 滚动轴承故障诊断对于工业设备的维护至关重要.
- 小样本条件对传统故障诊断方法构成挑战,导致不完整的特征提取.
- 强大的特征提取对于准确的故障识别至关重要.
研究的目的:
- 提出一种新的时间图卷积融合网络 (T-GCFN),用于增强滚动轴承故障诊断.
- 提高诊断的准确性和稳定性,特别是在小样本条件下.
- 为了使时间域和频域特征的协作提取和动态融合.
主要方法:
- 变化模式分解 (VMD) 用于时间域特征提取 (内在模式函数 - IMF).
- 时间卷积网络 (TCN) 来捕捉多层次的时间依赖.
- 频域特征的快速里叶变换 (FFT),K-近邻 (KNN) 图形构造,以及空间相关性识别的图形卷积网络 (GCN).
- 频道注意力融合层与多层感知器 (MLP) 进行功能增强.
- 软马克斯分类器用于端到端的故障识别.
主要成果:
- 在小样本场景中,T-GCFN显著提高了故障识别精度.
- 该方法通过协作特征提取证明了增强的诊断稳定性.
- 时空特征的动态融合导致了更完整的故障信息提取.
结论:
- 拟议的T-GCFN有效地解决了在小样本条件下不完全提取故障特征的挑战.
- 该网络表现出强大的适应性,并显著提高了滚动轴承故障诊断的准确性.
- 通过道注意力机制融合时间域和频域特征是该方法成功的关键.
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