Title :
Direct switching position control of magnetic bearings
Author_Institution :
Dept. of Electr. Machines & Drives, Tech. Univ. Chemnitz
Abstract :
For using magnetic bearings a direct switching controller is proposed. The voltage supply for the control windings has to be changed in a time-discrete manner which makes it possible to control the radial position and speed of the shaft in a direct way. By utilizing the precalculated zeros of the radial speed in relation with the smallest radial position error the best switching instant can be determined after every sampling period. Test results show the usefulness of this method
Keywords :
angular velocity control; control system synthesis; machine bearings; machine control; magnetic devices; position control; switching; voltage control; best switching instant; control windings; direct switching position control; magnetic bearings; radial position control; radial position error; shaft speed control; switching controller design; time-discrete voltage control; voltage supply; Circuits; Coils; Magnetic forces; Magnetic levitation; Magnetic switching; Position control; Pulse width modulation; Shafts; Sliding mode control; Voltage control;
Conference_Titel :
Power Electronics and Drive Systems, 1997. Proceedings., 1997 International Conference on
Print_ISBN :
0-7803-3773-5
DOI :
10.1109/PEDS.1997.618707
