Chinese Journal of Mechanical Engineering

, Volume 28, Issue 1, pp 96–105 | Cite as

Feature extraction and recognition for rolling element bearing fault utilizing short-time Fourier transform and non-negative matrix factorization

  • Huizhong Gao
  • Lin Liang
  • Xiaoguang Chen
  • Guanghua Xu


Due to the non-stationary characteristics of vibration signals acquired from rolling element bearing fault, the time-frequency analysis is often applied to describe the local information of these unstable signals smartly. However, it is difficult to classify the high dimensional feature matrix directly because of too large dimensions for many classifiers. This paper combines the concepts of time-frequency distribution(TFD) with non-negative matrix factorization(NMF), and proposes a novel TFD matrix factorization method to enhance representation and identification of bearing fault. Throughout this method, the TFD of a vibration signal is firstly accomplished to describe the localized faults with short-time Fourier transform(STFT). Then, the supervised NMF mapping is adopted to extract the fault features from TFD. Meanwhile, the fault samples can be clustered and recognized automatically by using the clustering property of NMF. The proposed method takes advantages of the NMF in the parts-based representation and the adaptive clustering. The localized fault features of interest can be extracted as well. To evaluate the performance of the proposed method, the 9 kinds of the bearing fault on a test bench is performed. The proposed method can effectively identify the fault severity and different fault types. Moreover, in comparison with the artificial neural network(ANN), NMF yields 99.3% mean accuracy which is much superior to ANN. This research presents a simple and practical resolution for the fault diagnosis problem of rolling element bearing in high dimensional feature space.


time-frequency distribution non-negative matrix factorization rolling element bearing feature extraction 


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Copyright information

© Chinese Mechanical Engineering Society and Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Huizhong Gao
    • 1
    • 4
  • Lin Liang
    • 1
    • 2
  • Xiaoguang Chen
    • 1
  • Guanghua Xu
    • 1
    • 3
  1. 1.School of Mechanical EngineeringXi’an Jiaotong UniversityXi’anChina
  2. 2.Key Laboratory for Modern Design and Rotor-Bearing System of Education MinistryXi’an Jiaotong UniversityXi’anChina
  3. 3.State Key Laboratory for Manufacturing Systems EngineeringXi’an Jiaotong UniversityXi’anChina
  4. 4.The 705 Research InstituteChina Shipbuilding Industry CorporationXi’anChina

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