Abstract
This paper addresses the problem of low-bias control for an active magnetic bearing (AMB) subject to voltage saturation. Using a generalized complementarity flux condition, a simple, three-dimensional (3-D) flux-based model is used to describe the dynamics of the low-bias mode of operation. Several stabilizing controllers are derived by applying recent results from nonlinear control theory. Specifically, the asymptotic small-gain theorem of Teel and passivity-based ideas are instrumental in our designs. Both soft and hard saturation constraints are accommodated. When flux measurements are not available, a nonlinear reduced order observer is proposed to estimate the flux. We show global asymptotic stability for all controller-observer interconnections. Numerical simulations against a high-fidelity AMB model show the effectiveness of the proposed control designs.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
