Abstract: For radial magnetic bearings with the configuration of multi-pole, independently driven coils, a fault-tolerant control scheme is developed on the basis of the method of generalized bias current linearization and controller reconfiguration. The Scheme is applicable to radial bearings with different magnet pole geometries by taking into consideration the coupled effect of magnetic flures. Simulation results are provided to show the feasibility of the above scheme.

Key words: Active magnetic bearing, Fault-tolerance control, Generalized bias current linearization