Abstract
A novel method of aero-engine rubbing positions identification based on cepstrum analysis is proposed, and the transfer path characteristics which reflect the transfer characteristics information from rubbing points to casing measuring points are separated from the vibration acceleration signals of casing by means of cepstrum analysis. Therefore, there is different transfer characteristics information at different rubbing positions, and in view of this, twenty rubbing positions identification features from the cepstrum are extracted. A large number of rubbing experiments of different positions are simulated with the rotor experiment rig of aero-engine, and the characteristic analysis of experimental samples at different rubbing positions is carried out, and the results indicate the consistency of features to the same rubbing position and the difference of the features to the different rubbing positions. Finally, the aero-engine rubbing positions identification is carried out using the nearest neighbor classification method, the recognition rate reaches 100%, and the effectiveness of the method is full verified.
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References
A. Muszynska, Rotor-to-stationary element rub-related vibration phenomena in rotating machinery, Shock and Vibration Digest, 21 (1989) 3–11.
Y. L. Sun, Y. X. Zhang and H. B. Chang, Method of rotor rub-impact faults diagnosis based on stator vibration signal, Journal of Vibration Engineering, 22 (4) (2009) 391–394 (in Chinese).
F. L. Chu, Q. Y. Wang and W. X. Lu, Detective of the rub location in a rotor system with AE sensors and wavelet analysis, Chinese Journal of Mechanical Engineering, 38 (3) (2002) 139–143 (in Chinese).
A. D. Deng, Y. Q. Bao and L. Zhao, Positioning of acoustic emission source by using sub-gradient projection based on energy attenuation model, Chinese Journal of Mechanical Engineering, 46 (9) (2010) 66–72 (in Chinese).
F. Chu and W. Lu, Determination of the rubbing location in a multi-disk rotor system by means of dynamic stiffness identification, Journal of Sound and Vibration, 248 (2) (2001) 235–246.
W. X. Lu, F. L. Chu and D. Guo, Rubbing location identifycation based on genetic algorithms, Journal of Tsinghua University (Sci&Tech), 45 (2) 208–211 (in Chinese).
T. He et al., Method for locating rub fault of rotor-stator based on acoustic emission beam forming, Journal of Aerospace Power, 26 (10) (2011) 2207–2213 (in Chinese).
Q. Wang and F. Chu, Experimental determination of the rubbing location by means of acoustic emission and wavelet transform, Journal of Sound and Vibration, 248 (1) (2001) 91–103.
S. F. Yuan and F. L. Chu, The application to shaft rubbing positions identification based on sphere support vector machine, Journal of Vibration and Shock, 28 (8) (2009) 70–73 (in Chinese).
Q. K. Han et al., Hybrid model based identification of local rubbing fault in rotor systems, Key Engineering Materials, 293 (2005) 355–364.
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Recommended by Associate Editor Kyung-Soo Kim
Guo Chen received the Ph.D. from Southwest Jiaotong University, China, in 2000. He is currently a professor with the College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, China. His research interests are mainly in whole aero-engine vibration, rotor dynamics, machine fault diagnosis.
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Chen, G., Liu, YQ., Jiang, GY. et al. A novel method for identifying rotor-stator rubbing positions using the cepstrum analysis technique. J Mech Sci Technol 28, 3537–3544 (2014). https://doi.org/10.1007/s12206-014-0814-y
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DOI: https://doi.org/10.1007/s12206-014-0814-y