Title :
Modeling and control of horizontal-shaft magnetic bearing system
Author :
Polajzer, Bostjan
Author_Institution :
Fac. of Electr. Eng. & Comput. Sci., Maribor Univ.
Abstract :
A horizontal shaft magnetic bearing system represents a five degree of freedom (DOF) system. In the paper, first the modeling procedure of a laboratory prototype with two DOFs is presented. The treatment is then reduced to the modeling and control design of the y-axis. The model of reduced subsystem has one DOF and is nonlinear. It is linearized in the equilibrium point. The developed model is used for the simple PID controller design. In case of decentralized control, the same controller structure can be used to control the remaining DOFs. Comparison of experiment and simulation results for control in the y-axis is shown. Some important findings, difficulties and suggestions are summarized at the end
Keywords :
control system analysis; control system synthesis; decentralised control; electromagnets; linearisation techniques; magnetic devices; magnetic levitation; nonlinear control systems; three-term control; PID controller design; control design; control simulation; decentralized control; degree of freedom; equilibrium point; horizontal-shaft magnetic bearing system; modeling procedure; Computer science; Control design; Distributed control; Electromagnets; Laboratories; Magnetic levitation; Mathematical model; Mechatronics; Prototypes; Shafts;
Conference_Titel :
Industrial Electronics, 1999. ISIE '99. Proceedings of the IEEE International Symposium on
Conference_Location :
Bled
Print_ISBN :
0-7803-5662-4
DOI :
10.1109/ISIE.1999.796775
