Magnetic Suspension System Using Persistent Current Flowing in Superconducting Coil

Superconducting techniques are useful and applied to a superconducting magnetic suspension system. The system is composed of copper coils, a superconducting coil, a magnetically suspended object, a PID controller, a photo sensor, and power amplifiers. Control current flowing in copper coils and persistent current flowing in superconducting coil are used for suspending object and controlling object, respectively. Large gap trial for the suspension system is discussed, and static characteristics and dynamic characteristics of the suspension system are also discussed