Vibration-Based Diagnostics and Structural Analysis of Research on Nonlinear Dynamic Processes in Maglev-Suspension Rotor Turbomachines
- Authors: Mormul R.V.1, Pavlov D.A.2,1, Sal’nikov A.F.2
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Affiliations:
- Iskra Scientific and Production Association, PAO
- Perm National Research Polytechnic University
- Issue: Vol 54, No 7 (2018)
- Pages: 487-494
- Section: Acoustic Methods
- URL: https://journals.rcsi.science/1061-8309/article/view/181733
- DOI: https://doi.org/10.1134/S1061830918070057
- ID: 181733
Cite item
Abstract
The mathematical apparatus used in the wavelet and Fourier analyses has been applied to studying the spectral composition of a frequency-domain interaction between nonlinear dynamic processes of the gas-dynamic, mechanical, and electromagnetic nature in maglev-suspension (MLS) rotor turbomachines in different operating modes. A mathematical model for the optimum operation of an automated maglev-suspension–control system (AMSCS) has been developed. Reasons have been revealed for the emergence of a low-frequency carrier subharmonic frequency component of the mechanical nature (an astable mode), which led to the emergency stops of MLS turbosets and to the emergence of flaws in the rotor part of the radial electromagnet and in the stator part of the magnetic suspension. The developed set of scientific and engineering solutions has allowed a 76% reduction in the amplitude of MLS-rotor precession.
About the authors
R. V. Mormul
Iskra Scientific and Production Association, PAO
Author for correspondence.
Email: rmormul@yandex.ru
Russian Federation, Perm, 614038
D. A. Pavlov
Perm National Research Polytechnic University; Iskra Scientific and Production Association, PAO
Email: rmormul@yandex.ru
Russian Federation, Perm, 614990; Perm, 614038
A. F. Sal’nikov
Perm National Research Polytechnic University
Email: rmormul@yandex.ru
Russian Federation, Perm, 614990