Browse > Article

Fault Tolerant Control of Magnetic Bearings with Force Invariance  

Na, Uhn-Joo (Division of Mechanical and Automation Engineering, Kyungnam University)
Publication Information
Journal of Mechanical Science and Technology / v.19, no.3, 2005 , pp. 731-742 More about this Journal
Abstract
A magnetic bearing even with multiple coil failure can produce the same decoupled magnetic forces as those before failure if the remaining coil currents are properly redistributed. This fault-tolerant, force invariance control can be achieved with simply replacing the distribution matrix with the appropriate one shortly after coils fail, without modifying feedback control law. The distribution gain matrix that satisfies the necessary constraint conditions of decoupling linearized magnetic forces is determined with the Lagrange Multiplier optimization method.
Keywords
Magnetic Bearings; Fault Tolerance; Rotor Dynamics; Active Vibration Control;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By Web Of Science : 2  (Related Records In Web of Science)
Times Cited By SCOPUS : 2
연도 인용수 순위
1 Salm, J. and Schweitzer, G., 1984, 'Modeling and Control of a Flexible Rotor with Magnetic Bearing,' Proceedings of the Third International Conference on Vibrations in Rotating Machinery, pp. 553-561
2 Na, U. J. and Palazzolo, A. B., 2000, 'Fault-Tolerance of Magnetic Bearings with Material Path Reluctances and Fringing Factors,' IEEE Trans. Magnetics, Vol. 36, No. 6, pp. 3939-3946   DOI   ScienceOn
3 Na. U. J. and Palazzolo. A. B., 2001, 'The Fault-Tolerant Control of Magnetic Bearings With Reduced Controller Outputs,' ASME Trans. Journal of Dynamic Systems, Measurement, and Control, Vol. 123, pp. 219-224   DOI   ScienceOn
4 Matsumura, F. and Yoshimoto, T., 1986, 'System Modeling and Control of a Horizontal- Shaft Magnetic-Bearing System,' IEEE Trans. Magnetics, Vol. 22, pp. 197-206   DOI
5 Lee, C. and Kim, J., 1992, 'Modal Testing and Suboptimal Vibration Control of Flexible Rotor Bearing System by Using a Magnetic Bearing,' ASME Trans. Journal of Dynamic System,Meaurement, and Control, vol. 114, pp. 244-252   DOI
6 Meeker, D. C., 1996 'Optimal Solutions to the Inverse Problem in Quadratic Magnetic Actuators,' Ph. D. Dissertation, Mechanical Engineering, University of Virginia
7 Maslen, E. H., Sortore, C. K., Gilhes, G. T., Wilhams, R. D., Fedigan, S. J. and Aimone, R. J., 1999, 'Fault Tolerant Magnetic Bearings,' ASME Trans. Journal of Engineering for Gas Turbines and Power, Vol. 121, pp. 504-508   DOI
8 Lyons, J. P., Preston, M. A., Gurumoorthy, R. and Szczesny, P. M., 1994, 'Design and Control of a Fault-Tolerant Active Magnetic Bearing System for Aircraft Engine,' Proceedings of the Fourth International Symposium on Magnetic Bearings, ETH Zurich, pp. 449-454
9 Maslen, E. H. and Meeker, D. C., 1995, 'Fault Tolerance of Magnetic Bearings by Generalized Bias Current Linearization,' IEEE Trans. Magnetics, Vol. 31, pp. 2304-2314   DOI   ScienceOn
10 Keith, F. J., Williams, R. D. and Allaire, P. E., 1990, 'Digital Control of Magnetic Bearings Supporting a Multimass Flexible Rotor,' STLE Tribology Transactions, Vol. 33, pp. 307-314   DOI   ScienceOn
11 Ahn, H. and Han, D., 2003, 'System Modehng and Robust Control of an AMB Spindle Part II A Robust Controller Design and its Implementation,' KSME International Journal, Vol. 17 No. 12, pp. 1855-1866   과학기술학회마을
12 Allaire, P. E., 1989, 'Design and Test of a Magnetic Thrust Bearing,' Journal of the Franklin Institute, Vol. 326, No. 6, pp. 831-847   DOI   ScienceOn
13 Bornstein, K. R., 1991, 'Dynamic Load Capabilities of Active Electromagnetic Bearings,'ASME Trans. Journal of Tribology, Vol. 113, pp. 598-603   DOI
14 Jeon, S., Ahn, H. and Han, D., 2002, 'Model Validation and Controller Design for Vibration Suppression of Flexible Rotor Using AMB,' KSME International Journal, Vol. 16 No. 12, pp. 1583-1593   과학기술학회마을