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Volume 33 Issue 10
Jul.  2021
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Article Contents
TANG Ying, LI Ying-zhen. Railway bearing fault diagnosis with the pattern recognition method of interface geometric discriminant[J]. Chinese Journal of Engineering, 2011, 33(10): 1293-1300. doi: 10.13374/j.issn1001-053x.2011.10.020
Citation: TANG Ying, LI Ying-zhen. Railway bearing fault diagnosis with the pattern recognition method of interface geometric discriminant[J]. Chinese Journal of Engineering, 2011, 33(10): 1293-1300. doi: 10.13374/j.issn1001-053x.2011.10.020

Railway bearing fault diagnosis with the pattern recognition method of interface geometric discriminant

doi: 10.13374/j.issn1001-053x.2011.10.020
  • Received Date: 2010-10-13
    Available Online: 2021-07-30
  • With the concept of optimal classification lines,a pattern recognition method,which uses interface geometric discriminant to generate a pattern classifier,was proposed.Major procedures of the method include:mapping multidimensional inputted characteristic vectors of different pattern classes to a 2-dimensional(2D) discriminant space with a BP neural network which is characterized by its high nonlinear mapping capability,extracting a polygon axis of the polygon which is formed at the interval clearance space among pattern classes,and constructing a decision-making boundary for pattern recognition by extending polygon axes to all discriminating domains.The method was tested in a case study of fault diagnosis for double row tapered roller-bearings used in railway wheels.The result shows that the proposed method can construct decision-making boundaries for different fault patterns on a 2D discriminant space,which provides a condition to operators for intuitive recognition of fault classifications in practice.

     

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      沈陽化工大學材料科學與工程學院 沈陽 110142

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