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Paper details
Number 3 - September 2017
Volume 27 - 2017
Feedback linearization of an active magnetic bearing system operated with a zero-bias flux
Arkadiusz Mystkowski, Vadim Kaparin, Ülle Kotta, Ewa Pawluszewicz, Maris Tõnso
Abstract
Input-output linearization by state feedback is applied to a flux-controlled active magnetic bearing (AMB) system, operated
in the zero-bias mode. Two models of the AMB system are employed. The first one is described by the third-order
dynamics with a flux-dependent voltage switching scheme, whereas the second one is the fourth-order system, called self-sensing AMB, since it does not require the measurement of the rotor position. In the case of that system we had to find
the flat outputs to guarantee its stability. The proposed control schemes are verified by means of numerical simulations
performed within the Matlab environment.
Keywords
active magnetic bearing, flux control, zero-bias, feedback linearization, flat outputs