Modeling and Aalyzing Electromagnets for Magnetic Suspension Systems

  • Lee, Sang-Heon (School of Mechanical Engineering, Andong National University) ;
  • Baek, Yoon-Su (School of Mechanical Engineering, Yonsei University) ;
  • Jung, Kwang-Suk (Department of Mechanical Engineering, Chungju National University)
  • Published : 2006.10.01

Abstract

Various precision engineering studies have attempted to remove mechanical friction, which causes the performance of a system to deteriorate, from precision positioning devices. Since the classical fluid lubrication method has some disadvantages in clean environments, attention has been focused on magnetic bearings and contact-free systems with their pollution-free characteristics. In this paper, f electromagnets are modeled and analyzed, not only for magnetic bearings but also for contact-free electromagnetic actuators. Three types of electromagnets that are appropriate for various applications were considered using magnetic circuitry theory. The results were experimentally validated.

Keywords

References

  1. Jung, K. S. and Baek, Y. S., 'Precision Stage Using a Novel Contact-Free Planar Actuator Based on Combination of Electromagnetic Forces,' Trans. of KSME A, Vol. 25, No. 11, pp. 1863-1872, 2001
  2. Jung, K. S., Lee, S. H. and Baek, Y. S., 'Feasibility Study of General-purpose Precision Stage Using A Novel Contact-Free Surface Actuator Based on Magnetic Suspension Technology,' Trans. Of KSME A, Vol. 26, No. 3, pp. 452-460, 2002 https://doi.org/10.3795/KSME-A.2002.26.3.452
  3. Kim, W. J., Trumper, D. L. and Jeffrey, H. L., 'Modeling and Vector Control of Planar Magnetic Levitator,' IEEE Trans. on Industry Applications, Vol. 34, No. 6, pp. 1254-1262, 1998 https://doi.org/10.1109/28.738999
  4. Jayawant, B. V., 'Electromagnetic Levitation and Suspension Techniques,' London: Edward Arnold, pp. 1-19, 1980
  5. Nasar, S. A. and Unnewwehr, L. E., 'Electromechanics and Electric Machines,' New York: John Wiley & Sons, Inc., pp. 121- 123, 1983
  6. Roters, H. C., 'Electromagnetic devices,' New York: John Wiley & Sons, Inc., pp. 84-150, 1951
  7. Griffiths, D. J., 'Introduction to Electrodynamics,' Seoul: Kyo Hak Sa Publishing, pp. 227-250, 1989
  8. Sake, Y. and Hitoshi, Y., 'Electromagnetic Levitation System by Means of Salient-Pole Type Magnets Coupled with Laminated Slotless Rails,' IEEE Trans. on Vehicular Technology, Vol. 39, No. 1, pp. 83-87, 1990 https://doi.org/10.1109/25.54959