Abstract

The paper proposed a modified inverse decoupling control method for bearingless switched reluctance motors (BSRMs) operating in irreversible domain. The reversibility of the model was analyzed and the irreversible domain was deduced. Then, the modified inversion was obtained via the modification of a feed-back variable. And BSRM was decoupled into two second-order integral type displacement subsystems and one first-order integral type speed subsystem by the modified inversion. Besides, to enhance the control performance, a closed-loop compound control system was designed for subsystems. Finally, experiment results show that the proposed approach can realize decoupling control for BSRM in irreversible domain, and it has good suspension stability and regulation-speed performance.

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