Magnetic Bearing #1, controlled using a floating-point
digital signal processor.
Magnetic bearings #2 and #3, excited by a pulse density
modulated resonant-link converter.
Related publications
J. Y. Hung, N. G. Albritton, and F. Xia,
"Nonlinear control of a magnetic bearing system,"
Mechatronics,
vol. 13, no. 6, pp 621 - 637, July 2003.
S. Nolan and J. Y. Hung,
"Technology advances for magnetic bearings,"
Space Technology and Applications International Forum,
American Institute of Physics Conference Proceedings 361, p. 169-174, Albuquerque, NM, Jan 1996.
F. Xia, N. G. Albritton, J. Y. Hung, and R. M. Nelms,
"A hybrid nonlinear control scheme for active magnetic bearings,"
3rd International Symposium on Magnetic Suspension Technology,
Tallahassee, FL, Dec 1995.
N. G. Albritton and J. Y. Hung,
"Observers for sensorless control of industrial magnetic bearings,"
IEEE Industrial Electronics Conference,
Orlando, FL, Nov 1995.
J. Y. Hung,
"Magnetic bearing control using fuzzy logic,"
IEEE Transactions on Industry Applications,
v. 31, n. 6, p. 1492-1497, Nov/Dec 1995. Original presentation at
IEEE Industry Applications Society Annual Meeting,
Toronto, Ontario, CANADA, pp. 2210-2215, Oct 1993.
J. Y. Hung, R. M. Nelms, F. Xia, and M. Story,
"Three-mode variable structure control of a pulse density
modulated current feedback amplifier,"
1995 IEEE Symposium on Industrial Electronics,
Athens, GREECE, pp. 736-740, July 1995.
J. Y. Hung,
"Nonlinear Magnetic Bearing Control Using Fuzzy Logic,"
an invited paper for the
IEEE International Workshop on Neuro-Fuzzy Control,
Muroran, Hokkaido, JAPAN, March 1993.