NC Machine Tools Fault Diagnosis Based on Kernel PCA and k-Nearest Neighbor Using Vibration Signals

Autor: Zhou Yuqing, Sun Bingtao, Li Fengping, Song Wenlei
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Shock and Vibration, Vol 2015 (2015)
Druh dokumentu: article
ISSN: 1070-9622
1875-9203
DOI: 10.1155/2015/139217
Popis: This paper focuses on the fault diagnosis for NC machine tools and puts forward a fault diagnosis method based on kernel principal component analysis (KPCA) and k-nearest neighbor (kNN). A data-dependent KPCA based on covariance matrix of sample data is designed to overcome the subjectivity in parameter selection of kernel function and is used to transform original high-dimensional data into low-dimensional manifold feature space with the intrinsic dimensionality. The kNN method is modified to adapt the fault diagnosis of tools that can determine thresholds of multifault classes and is applied to detect potential faults. An experimental analysis in NC milling machine tools is developed; the testing result shows that the proposed method is outperforming compared to the other two methods in tool fault diagnosis.
Databáze: Directory of Open Access Journals
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