Volume 28 Issue 1
Jan.  2013
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Article Navigation >  Journal of Aerospace Power  > 2013  >  28(1): 46-53
YU Ming-yue, CHEN Guo, LI Cheng-gang, FENG Guo-quan, WANG De-you. Rotor-stator rubbing positions identification of aero-engine based on wavelet packet analysis and support vector machine[J]. Journal of Aerospace Power, 2013, 28(1): 46-53.
Citation: YU Ming-yue, CHEN Guo, LI Cheng-gang, FENG Guo-quan, WANG De-you. Rotor-stator rubbing positions identification of aero-engine based on wavelet packet analysis and support vector machine[J]. Journal of Aerospace Power, 2013, 28(1): 46-53.
shu

Rotor-stator rubbing positions identification of aero-engine based on wavelet packet analysis and support vector machine

  • 1.

    College of Civil Aviation College, Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

  • 2.

    Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China,Shenyang 110015,China

  • Received Date: 2012-01-16
  • Publish Date: 2013-01-28
    Abstract
  • Rubbing faults of different radial rubbing positions by using the rotor experiment rig of aero-engine are simulated.An identification method based on wavelet packet analysis and support vector machine(SVM) was proposed.Firstly,the acceleration signals on the casing were collected.Secondly,the signals were decomposed by wavelet packet analysis,and the normalized energy features were extracted.Finally,the normalized energy characteristics were input into support vector machine to identify the different rubbing positions.By using an aero-engine rotor experiment rig,a large number of samples including different rubbing positions and different rubbing degrees were simulated, and the support vector machine was trained and tested by these samples.The results show that the new method combining the wavelet packet energy features and support vector machine can effectively identify the rotor-stator rubbing positions of aero-engine;in addition,only one sensor is required to reach the recognition rate of 98%.

     

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