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Feature Selection for Bearing Fault Detection Based on Mutual Information

  • Karthik Kappaganthu
  • C. NatarajEmail author
  • Biswanath Samanta
Conference paper
Part of the IUTAM Bookseries book series (IUTAMBOOK, volume 1011)

Abstract

This paper deals with the important task of feature selection for the detection of faulty bearings in a rotor-bearing system. Various time, frequency and time-frequency based features are obtained from signals measured from bearings with and without outer race defect. The features are divided into a training set, a validation set and a test set. The task is to develop an optimal subset of features for a pattern classification algorithm which can efficiently and accurately classify the state of the machine as healthy or faulty. The features are ranked based on the mutual information content between the feature subset and the state of the machine. A validation set from the measured data is then used to obtain the optimal subset for classification. The performance of the method is evaluated using the test set.

Keywords

Bearing defect Feature selection Mutual information Optimal feature set 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Karthik Kappaganthu
    • 1
  • C. Nataraj
    • 1
    Email author
  • Biswanath Samanta
    • 1
  1. 1.Department of Mechanical EngineeringVillanova UniversityVillanovaUSA

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