Modelling Electromagnetic Suspension Force


By Musaab Hassan.


Electromagnetic suspension system is commonly used in the field of high-speed vehicle, conveyor system, tool machines and frictionless bearing. Modelling a magnetic system requires modelling the magnetic force characteristics together with the current and the position. In this work; a 1D look-up table, of measured data, was used to represent the inductance as a function of the airgap. A 2D look-up table was generated to represent the electromagnetic force as a function of the current and the airgap. The proposed model account for both inductance variation and current variation as the airgap is changing


  • ZG Sun, NC Cheung, JF Pan, SW Zhao, WC Gan, "Desig and Simulation of a Magnetic Levitated Switched Reluctance Linear Actuator System for High Precision Applications" The IEEE International Symposium on Industrial Electronics (ISIE 2008) 30-June - 2 July, 2008, Cambridge, UK
  • Barie, W. and Chiasson, J., ‘Linear and nonlinear state-space controllers for magnetic levitation’, International Journal of Systems Science 27(11), 1996, 1153–1163
  • Khalid Ali, Mohammed Abdelati, Mohammed Hussein, “Modelling, Identification and Control of A Magnetic Levitation CE152”, Al-Aqsa University Journal (Natural Sciences Series), Vol.14, No.1, Pages 42-68, Jan.201
  • J. Van Goethem and G. Henneberger, "Design and implementation of a levitation-controller for a magnetic levitation conveyor vehicle", 8th International Symposium on Magnetic Bearing, Mito, Japan, August:26-28, 200
  • Y. S. Lee, J. H. Yang and S. Y. Shim, “A New Model of Magnetic Force in Magnetic Levitation Systems”, Journal of Electrical Engineering & Technology, Vol. 3, No. 4, pp. 584~592, 2008
  • In-Gann Chen, Jen-Chou Hsul, Gwo Janm, Chin-Chen Kuo, Haw-Jer Liu, and M. K. Wu, “Magnetic Levitation Force of Single Grained YBCO Materials”, Chinese journal of physics vol. 36, no. 2, 199
  • J. M. Stephenson and J. Corda, “Computation of torque and current in doubly-salient reluctance motors from nonlinear magnetization data,” Proc. Inst. Elect. Eng., vol. 126, no. 5, pp. 393–396, 197
  • Jayawant, B.V., Electromagnetic Levitation and Suspension Techniques, Thomson Litho Ltd., 1981
  • S. Colombi, A. Rufer, M. Zayadine, M. Girardin, Control Strategies for the Electromagnetic Levitated and Guided Vehicles of SwissMetro, MAGLEV 98: International Conference on Magnetically Levitated Systems and Linear Drives, Mt. Fuji, Japan.1998
  • Nichol, Characterisation and control of electromagnetic suspension, Msc Thesis in Newcastle university, 1998