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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 30075


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10005713
Increase of Energy Efficiency by Means of Application of Active Bearings
Abstract:
In the present paper, increasing of energy efficiency of a thrust hybrid bearing with a central feeding chamber is considered. The mathematical model was developed to determine the pressure distribution and the reaction forces, based on the Reynolds equation and static characteristics’ equations. The boundary problem of pressure distribution calculation was solved using the method of finite differences. For various types of lubricants, geometry and operational characteristics, axial gaps can be determined, where the minimal friction coefficient is provided. The next part of the study considers the application of servovalves in order to maintain the desired position of the rotor. The report features the calculation results and the analysis of the influence of the operational and geometric parameters on the energy efficiency of mechatronic fluid-film bearings.
Digital Object Identifier (DOI):

References:

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[3] S. Fürst, H. Ulbrich, An Active Support System for Rotors with Oil- Film Bearing. 4th International Conference on Vibration in Rotation Machinery of the Institution of Mechanical Engineers, Edinburgh, Scotland. 1988, pp. 61-68.
[4] I. F. Santos, Active Tilting-Pad Bearings - Theory and Experiment, Dr. Eng. Thesis, VDI-Verlag, Düsseldorf, Germany, 1993.
[5] A. B. Palazzolo, R. R. Lin, R. M. Alexander, A. F. Kascak, J. Montague, Test and Theory for Piezoelectric Actuators - Active Vibration Control of Rotating Machinery, Trans. Of ASME, Journal of Vibration and Accoustics 113 (1991) 167–175.
[6] D. C. Deckler, R. J. Veillette, M. J. Braun, F. K. Choy, Simulation and Control of an Active Tilting-Pad Journal Bearing, STLE Tribology Trans. 47 (2004) 440–458.
[7] A. Wu, Z. Cai, M. S. de Queiroz, Model-Based Control of Active Tilting-Pad Bearings, IEEE/ASME Transactions on Mechatronics 12 (6) (2007) 689–695.
[8] I. F. Santos, Design and Evaluation of Two Types of Active Tilting-Pad Journal Bearings, in: IUTAM Symposium - The Active Control of Vibration, Mechanical Engineering Publications Limited, 1995, pp. 79–87.
[9] W.J. Oledzki, U.S. Patent 8523445. (2010).
[10] P. Kytka, C. Ehmann, R. Nordmann, Active Vibration μ-Synthesis-Control of a Hydrostatically Supported Flexible Beam, Journal of Mechanical Science and Technology. 21 (2007) 924-929.
[11] P.K. Agarwal, S. Chand, Fuzzy Logic Control of Four-Pole Active Magnetic Bearing System, The 2010 International Conference on Modelling, Identification and Control (ICMIC). (2010) 533-538.
[12] M. Dobrica, M. Fillon, P. Maspeyrot, Influence of Mixed-Lubrication and Rough Elastic-Plastic Contact on the Performance of Small Fluid Film Bearings. STLE Tribology Transactions, Vol. 51, N°6; pp. 699-717, (2008).
[13] D. Shutin, Hybrid Bearings’ Enchancement by Means of Controlling the Lubricant Supply Parameters, PhD thesis, Oryol, Russia, 2015.
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