Adaptive Sliding Mode Control with Linear Extended State Observer for Active Magnetic Bearing-Rotor Systems

Abstract

Dear Editor, Active magnetic bearings (AMBs) are of considerable interest and significance in smart manufacturing due to their zero-friction and adaptivity to noncontact rotor rotations. This paper proposes an active levitation control algorithm based on adaptive sliding mode control (ASMC) equipped with linear extended state observer (LESO). Sufficient conditions are derived to guarantee the asymptotical stability of the associated closed-loop system. Experiments are conducted on a real AMB-rotor platform to demonstrate the effectiveness and superiority of the proposed algorithm.