Volume 21 Issue 6
Dec.  2006
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SUN Tao, XU Guang-hua, ZHANG Chun-mei. Nonlinear monitoring of the centrifugal compressor surge process based on the correlation integral method[J]. Journal of Aerospace Power, 2006, 21(6): 1092-1097.
Citation: SUN Tao, XU Guang-hua, ZHANG Chun-mei. Nonlinear monitoring of the centrifugal compressor surge process based on the correlation integral method[J]. Journal of Aerospace Power, 2006, 21(6): 1092-1097.
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Nonlinear monitoring of the centrifugal compressor surge process based on the correlation integral method

  • 1.

    School of Mechanical Engineering, Xi′an Jiaotong University, Xi′an 710049, China

  • 2.

    State Key Laboratory of manufacturing System Engineering, Xi′an Jiaotong University, Xi′an 710049, China

  • 3.

    School of Energy and Power Engineering, Xi′an Jiaotong University, Xi′an 710049, China

  • Received Date: 2005-11-15
  • Rev Recd Date: 2006-04-23
  • Publish Date: 2006-12-28
    Abstract
  • The reference distance in the correlation integral formula affects the computational value of correlation integral dramatically.In this paper,the method of setting values for the reference distance was presented on the basis of the physical meaning of the correlation integral value and the distribution of all inter-points distances at different operating conditions.Relative degree of unsteadiness based on the reference distance and intensity of surge based on the correlation integral value were defined to analyze the degree of instability and surge in centrifugal compressors quantitatively.By means of applying these measuring parameters to a case of our experiment,it demonstrates that the correlation integral value,etc.are effective for the nonlinear monitoring of operating condition,identification of surge intensity and measuring of pressure unsteadiness in centrifugal compressors.

     

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