One-Axis Controlled Superconducting Magnetic Levitation System Using Persistent Current

Superconducting technique is applied to a superconducting magnetic levitation system. The levitation system is composed of a superconducting coil, a copper coil, a levitated object, a photo sensor, a proportional, integral and derivative (PID) controller, and power amplifiers. Persistent current in superconducting coil and control current in copper coil are used for levitating object and controlling object, respectively. In this paper, two different types of one-axis controlled superconducting magnetic levitation system using persistent current at a distance 43 mm are performed.