基于有监督增量式局部线性嵌入的故障辨识

李锋;田大庆;王家序;杨荣松

振动与冲击 ›› 2013, Vol. 32 ›› Issue (23) : 82-88.

PDF(867 KB)
PDF(867 KB)
振动与冲击 ›› 2013, Vol. 32 ›› Issue (23) : 82-88.
论文

基于有监督增量式局部线性嵌入的故障辨识

  • 李锋1,田大庆1,王家序2, 杨荣松1
作者信息 +

Fault identification method based on Supervised Incremental Locally Linear Embedding

  • LI Feng1,TIAN Da-qing1,WANG Jia-xu2 ,YANG Rong-song1
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摘要

提出一种基于有监督增量式局部线性嵌入的故障辨识方法。首先构造全面表征不同故障特性的时频域特征集,再利用有监督增量式局部线性嵌入将高维时频域特征集自动化简为区分度更好的低维特征矢量,并输入Morlet小波支持向量机中进行故障模式辨识。有监督增量式局部线性嵌入结合流形局部几何结构和类标签来设计重构权值矩阵,并采用局部线性投影计算新增样本的嵌入映射,提高了故障辨识精度,实现了新样本的快速增量处理。深沟球轴承故障诊断和空间轴承寿命状态辨识实例验证了该方法的有效性。

Abstract

A novel fault identification method based on Supervised Incremental Locally Linear Embedding (SILLE) is proposed in this paper. The time-frequency domain feature set is first constructed to completely characterize the property of each fault. Then, SILLE is introduced to automatically compress the high-dimensional time-frequency domain feature sets of training and test samples into the low-dimensional eigenvectors which have better discrimination. Finally, the low-dimensional eigenvectors of training and test samples are input into Morlet wavelet support vector machine (MWSVM) to carry out fault identification. SILLE considers both local manifold geometry and class labels in designing the reconstruction weight matrix and applies local linear projection to obtain the embedded mapping of the new fault samples, thus, it improves the fault identification accuracy and achieves rapid incremental processing of the new samples. Fault diagnosis example on deep groove ball bearings and life state identification example on one type of space bearing demonstrated the effectivity of proposed fault identification method.


关键词

时频域特征集 / 有监督增量式局部线性嵌入 / 维数化简 / 流形学习 / 故障辨识

Key words

Time-frequency domain feature set / Supervised incremental locally linear embedding (SILLE) / Dimension reduction / Manifold learning / Fault identification

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导出引用
李锋;田大庆;王家序;杨荣松. 基于有监督增量式局部线性嵌入的故障辨识[J]. 振动与冲击, 2013, 32(23): 82-88
LI Feng;TIAN Da-qing;WANG Jia-xu;YANG Rong-song. Fault identification method based on Supervised Incremental Locally Linear Embedding[J]. Journal of Vibration and Shock, 2013, 32(23): 82-88

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