2000 Volume 66 Issue 645 Pages 1489-1494
This research deals with evaluation of electromagnetic force and torque acting on a permanent magnet(PM)above a high-Tc superconductor(HTSC)and discusses dynamics of a spinning PM freely levitated above a HTSC. Force and torque were evaluated experimentally as functions of both displacement and tilting angle of the PM. Experimental results show that the force and torque acting on the PM are almost equivalent to ones acting on a rotor supported by an overhung shaft with a frictionless bearing. By theoretical analysis based on the above evaluation of the force and torque, dynamical behavior of a spinning PM was examined. Predicted whirling and precession on the PM were observed in experiments of rotation.
Transactions of the Society of Mechanical Engineers
Transactions of the Japan Society of Mechanical Engineers
Transactions of the Japan Society of Mechanical Engineers Series A
Transactions of the Japan Society of Mechanical Engineers Series B
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
