Abstract
In order to investigate superconducting magnetic bearings (SMBs) using repulsion forces between superconductors and electromagnets, an experimental setup for a thrust SMB able to move in one direction has been made. The experimental setup is composed of a high T c superconductor, permanent magnets, electromagnets and a Hall sensor. The superconductor used in this paper is supported by the permanent magnets in the radial direction. The vibration of the superconductor is suppressed by an analog PD (proportional and derivative) controller. From the experiments, it is found that suppressing the vibration is well performed by the PD controller. Also, it is found that the controller needs more resistance against disturbance caused by the pinning effect.
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