Rougang Zhou, Yunfei Zhou, Guangdou Liu and Xiao Tu, University of Science & Technology, China

In the process of motion magnetically levitated planar actuators, the magnetic flux through the coils been changed as the position changed, It produced inductive electromotive force which associated with the location and speed of coils. Induction electromotive force to produce induced current in the coils, which influence the stability of the actuators. This paper presents a analytical model of induction electromotive force in the coils of magnetically levitated a planar actuators, According to the analytical model it could predict control the compensation of drive currents in order to offset the induced current which produce by electromotive force, the stability of Magnetically levitated planar actuators have been improved. Finite element simulation had been used in this paper to approve the correct of the analytical model.

Induced Current, Magnetically Levitated Planar Actuators, Halbach Permanent Magnet array