Title: An experimental study on PID tuning methods for active magnetic bearing systems

Authors: Parinya Anantachaisilp; Zongli Lin

Addresses: Charles L. Brown Department of Electrical and Computer Engineering, University of Virginia, P.O. Box 400743, Charlottesville, VA 22904-4743, USA ' Charles L. Brown Department of Electrical and Computer Engineering, University of Virginia, P.O. Box 400743, Charlottesville, VA 22904-4743, USA

Abstract: A key challenge in active magnetic bearing (AMB) applications is the design of control systems that maintain stability in the presence of external loads and disturbances. The most commonly used controller for AMB systems is the PID control, whose design involves tuning of the controller coefficients. Different systematic tuning methods have been developed and reported on in the literature. This paper examines some of these tuning methods in AMB control systems. Experiments are carried out on an AMB test rig to compare the performance of the closed-loop systems resulting from these tuning methods in terms of steady state accuracy and robustness.

Keywords: PID control; PID tuning; active magnetic bearings; AMB; relay feedback; sensitivity function; robustness; stability; external loads; disturbances; tuning methods.

DOI: 10.1504/IJAMECHS.2013.055991

International Journal of Advanced Mechatronic Systems, 2013 Vol.5 No.2, pp.146 - 154

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 23 Aug 2013 *

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