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Robust magnetic bearing control using stabilizing dynamical compensators

By G R Duan, Z Y Wu, Chris Bingham and D Howe


Abstract—This paper considers the robust control of an active radial magnetic bearing system, having a homopolar, external rotor topology, which is used to support an annular fiber composite flywheel rim. A first-order dynamical compensator, which uses only position feedback information, is used for control, its design being based on a linearized one-dimensional second-order model which is treated as an interval system in order to cope with parameter uncertainties. Through robust stability analysis, a parameterization of all first-order robustly stabilizing dynamical compensators for the interval system is initially obtained. Then, by appropriate selection of the free parameters in the robust controller, the H2 norm of the disturbance-output transfer function is made arbitrarily small over the system parameter intervals, and the norm of the input–output transfer function is made arbitrarily close to a lower bound. Simulation and experimental\ud results demonstrate both stability and performance robustness of the developed controller

Topics: H600 Electronic and Electrical Engineering
Publisher: Institution of Electronic and Electrical Engineers
Year: 2000
OAI identifier:

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  1. (1989). (M’00) received the B.Eng. degree in electronic systems and control engineering from Sheffield City Polytechnic,
  2. (1998). A flywheel peak power buffer for electric vehicles,” in doi
  3. degrees from the University of doi
  4. (1989). degrees in control engineering from Harbin Institute of Technology,
  5. (1985). Duan is a Chartered Engineer in the U.K. and a Fellow of the Institution of Electrical Engineers, U.K. Zhan-Yuan Wu received the B.Eng. and M.Sc. degrees in control engineering from
  6. (1994). New concepts for cost-effective magnetic bearing control,” doi
  7. (1993). Robust eigenstructure assignment via dynamical compensators,” doi
  8. (1996). Stability analysis of self-sensing magnetic bearing controllers,” doi
  9. (1984). State variable feedback control of rotor bearing suspension systems,” in

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