Active disturbance rejection control-based anti-coupling method for conical magnetic bearings

Danh Huy Nguyen; Minh Le  Vu; Hieu Do  Trong; Danh Giang Nguyen; Tung Lam Nguyen

doi:10.14311/AP.2022.62.0479

Authors

Danh Huy Nguyen Hanoi University of Science and Technology, School of Electrical Engineering, 1 Dai Co Viet st, Hanoi 100000, Vietnam
Minh Le Vu Hanoi University of Science and Technology, School of Electrical Engineering, 1 Dai Co Viet st, Hanoi 100000, Vietnam
Hieu Do Trong Hanoi University of Science and Technology, School of Electrical Engineering, 1 Dai Co Viet st, Hanoi 100000, Vietnam
Danh Giang Nguyen National University of Civil Engineering, Falcuty of Mechanical Engineering, 55 Giai Phong st, Hanoi 100000, Vietnam
Tung Lam Nguyen Hanoi University of Science and Technology, School of Electrical Engineering, 1 Dai Co Viet st, Hanoi 100000, Vietnam

DOI:

https://doi.org/10.14311/AP.2022.62.0479

Keywords:

conical active magnetic bearings, over-actuated systems, ADRC, coupling mechanism, linearization

Abstract

Conical-shape magnetic bearings are currently a potential candidate for various magnetic force-supported applications due to their unique geometric nature reducing the number of required active magnets. However, the bearing structure places control-engineering related problems in view of underactuated and coupling phenomena. The paper proposes an Adaptive Disturbance Rejection Control (ADRC) for solving the above-mentioned problem in the conical magnetic bearing. At first, virtual current controls are identified to decouple the electrical sub-system, then the active disturbance rejection control is employed to eliminate coupling effects owing to rotational motions. Comprehensive simulations are provided to illustrate the control ability.

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