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Identification of Mixed Operational Modes in Rotating Machinery Using the TVDFT Order Tracking Technique
Technical Paper
2004-01-3445
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this paper, the TVDFT Order Tracking technique (Time Variant Discrete Fourier Transform) is used to process complex non-stationary signals, generated by real measured signals. The method is applied in an experimental set-up for several run-ups, in order to identify the forward and backward precession movement in the directional order map. In this map, the negative orders are related to the backward and the positive ones to the forward orbit movement. The directional order maps are obtained for several rotor stations in order to identify the mixed operational modes, i.e., when some stations of the rotor describe their precessional movement in the forward direction while others move in the backward direction simultaneously. The experimental results showed the influence of the spatial distribution of the imbalance in the occurrence of the mixed operational modes.
Authors
Citation
Mesquita, A., Idehara, S., and Dias, M., "Identification of Mixed Operational Modes in Rotating Machinery Using the TVDFT Order Tracking Technique," SAE Technical Paper 2004-01-3445, 2004, https://doi.org/10.4271/2004-01-3445.Also In
References
- Southwick, D. “Using Full Spectrum Plots” ORBIT 14 December Bently Nevada Corporation 1993
- Han, Y.S. Lee, C.W. “Directional Wigner Distribution for Order Analysis in Rotating/Reciprocating Machines” Mechanical System and Signal Processing 13 5 723 737 1999
- Blough, J. R. Brown, D. L. Vold, H. “Order Tracking With Time Variant Discrete Fourier Transform” Proceedings of the 21st International Seminar of Modal Analysis - Noise and Vibration Engineering 1515 1525 Leuven, Belgium 1996
- Blough, J. R. “Improving the Analysis of Operating Data on Rotating Automotive Components” Department of Mechanical, Industrial, and Nuclear Engineering of the College of Engineering, University of Cincinnati Cincinnati 1998
- Potter, R. “A New Order Tracking Method for Rotating Machinery” Sound and Vibration Magazine 24 9 30 34 1990
- Vold, H. Leuridan, J. “High Resolution Order Tracking At Extreme Slew Rates, Using Kalman Tracking Filters” Proceedings of the Noise and Vibration Conference, SAE Technical Paper 931288 Tranverse City, MI, USA 1993
- Vold, H. Mains, M. Blough, J. R. “Theoretical Foundations For High Performance Order Tracking With The Vold-Kalman Filter” Proceedings of the Noise and Vibration Conference, SAE Technical Paper 972007 Traverse City, MI, USA 1997
- Dias M Jr., Allemang, R.J. “Some Insights into the Simultaneous Forward and Backward Whirling of Rotors” Proceedings of the 20th IMAC 2000
- Dias M. Jr., Idehara, S.J. Mesquita, A.L.A. Miranda, U.A. “On the Simultaneous Forward and Backward Whirling of Flexible Rotors: Numerical Analysis and Experimental Verification” IFToMM 6th International Conference on Rotor Dynamics Sydney, Australia 496 503 2002