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Fundamental Limitations in Self-Sensing Magnetic Bearings when Modeled as Linear Periodic Systems.

Peterson, K.S. and Middleton, R.H. and Freudenberg, J.S. (2006) Fundamental Limitations in Self-Sensing Magnetic Bearings when Modeled as Linear Periodic Systems. In: Proceedings of the 2006 American Control Conference Minneapolis, Minnesota, USA, June 14-16, 2006. IEEE, pp. 4552-4557. ISBN 1-4244-0209-3

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Abstract

In "Magnetic Bearing Measurement Configurations and Associated Robustness and Performance Limitations", Thibeault and Smith demonstrate that self-sensing magnetic bearings are impractical due to fundamental limitations in the achievable closed-loop robustness. Due to experimental data which appeared to contradict these results, Maslen, Montie, and Iwasaki showed that significantly better robustness is achievable in "Robustness limitations in selfsensing magnetic bearings" if the magnetic bearing is modeled as a linear periodic (LP) system rather than the linear time invariant (LTI) system used by Thibeault and Smith. The present paper explores why modeling the self-sensing magnetic bearing as a LP system improves the achievable robustness. This is accomplished by utilizing lifting to analyze the LP model as a MIMO discrete LTI system.

Item Type: Book Section
Additional Information: "©2006 IEEE. Reprinted from Proceedings of the 2006 American Control Conference Minneapolis, Minnesota, USA, June 14-16, 2006. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE." http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1657437&isnumber=34689
Keywords: MIMO systems; Closed loop systems; Discrete systems; Linear systems; Magnetic bearings; Periodic control; Position control; Robust control; Self-adjusting systems; Time-varying systems; Closed-loop robustness; Discrete system; Linear periodic systems; Linear time invariant system; Self-sensing magnetic bearings; ACC 2006; Hamilton Institute.
Subjects: Science & Engineering > Hamilton Institute
Science & Engineering > Computer Science
Item ID: 1782
Identification Number: 10.1109/ACC.2006.1657437
Depositing User: Hamilton Editor
Date Deposited: 12 Jan 2010 15:15
Publisher: IEEE
Refereed: Yes
URI:

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