Magnetic bearing systems

Details Magnetic bearing systems Magnetic bearing systems

1990-08-03

1994-09-13

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68B, H02K 709

Patent

active

053471903

ABSTRACT:
A magnetic bearing system includes a rotor with a plurality of masses distributed along the shaft including a portion having a circular peripheral surface suspended radially from pole pieces of permanent and electromagnets. A fault tolerant adaptive system responds to detected parameters of the rotor for varying the stiffness and damping the rotor. Position and speed of rotor are sampled at a rapid rate for each of a plurality of control axes and are processed independently during each sampling period. Malfunction of any of the processors causes supervisory controller to reconfigure the processing of the samples.

REFERENCES:
patent: 3937533 (1976-02-01), Veillette
patent: 4180946 (1980-01-01), Heijkensjold
patent: 4841184 (1989-06-01), Chen et al.
Appendix B, Fault Tolerant Magnetic Controller.
"Fault Tolerant Multiprocessor Digital Control System Design For Active Magnetic Bearings", S. W. Yates et al., University of Virginia, Jun. 1988, Charlottesville, Va., pp. 1-177.
Diagnostic and Control Features With Magnetic Bearings by R. R. Humphris et al.; Univ. of Virginia,Charlottesville, Va. 22901; presented at IECEC Conf. Aug. 6-11, 1989, Crystal City, Va.; pp. 1-8.

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