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Zhang Zhi-yu, Lu Yan-jun, Zhang Jiu-long. Generalized S-transform method of rotor impact-rub fault signal of aeroengine[J]. Journal of Traffic and Transportation Engineering, 2007, 7(3): 25-28.
Citation: Zhang Zhi-yu, Lu Yan-jun, Zhang Jiu-long. Generalized S-transform method of rotor impact-rub fault signal of aeroengine[J]. Journal of Traffic and Transportation Engineering, 2007, 7(3): 25-28.
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Generalized S-transform method of rotor impact-rub fault signal of aeroengine

  • 1.

    School of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, China

  • 2.

    School of Mechanical and Instrumental Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, China

  • 3.

    School of Computer Science and Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, China

More Information
  • Author Bio:

    Zhang Zhi-yu(1966-), male, EngD, professor, +86-29-82312461-203, zhangzhiyu@xaut.edu.cn

  • Received Date: 2007-02-15
  • Publish Date: 2007-06-25
    Abstract
  • In order to effectively pick out the impact-rub fault signal of aeroengine rotor, improve fault diagnosis veracity, the impact-rub signal was transformed to phase space by using generalized S-transform, the features of fault signal were detected in phase space, and the results obtained by using generalized S-transform(GST) and continuous wavelet transform(CWT) were compared. Comparison result shows that the time-frequency localization characteristics and singular points of impact-rub signal are more distinct in GST domain than in CWT domain, the impact-rub points are easier to be detected, GST has strong capability in noise reduction, and the separation of signal and noise is also available in GST domain.

     

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    • References(7)
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