State feedback controller designs allow for pole placement in an effective manner, but reduction of static offset is difficult. On the other hand, classical control methodology allows for the increase of system type and the elimination of static offset. An integrally augmented state feedback controller provides the benefits of standard feedback designs while allowing for the elimination of static offsets (through the increase of system type). Static offset is a particular problem with magnetic bearing supported rotor systems, in that gravitational effects, current biasing, and operational loading tend to exacerbate this problem. In order to assess the effectiveness of this technique, an integrally augmented state feedback controller is developed, implemented, and tested for a magnetic bearing supported rotor system. Results for several selected configurations are presented and compared. Some conclusions and recommendations concerning the effectiveness of integrally augmented state feedback controller designs are presented.
A Study of Integrally Augmented State Feedback Control for an Active Magnetic Bearing Supported Rotor System
Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Paper presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Orlando, FL, June 2–5, 1997; ASME Paper 97-GT-231. Manuscript received by IGTI December 1996; final revision received by the ASME Headquarters Mar. 1997. Associate Editor: H. A. Kidd.
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Flowers , G. T., Sza´sz, G., Trent , V. S., and Greene, M. E. (March 1, 1997). "A Study of Integrally Augmented State Feedback Control for an Active Magnetic Bearing Supported Rotor System ." ASME. J. Eng. Gas Turbines Power. April 2001; 123(2): 377–382. https://doi.org/10.1115/1.1360686
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