Mass Imbalance Measurement of Incomplete Spherical Superconducting Rotor With Air Suspension.

For an incomplete spherical superconducting rotor, which has a flat face at the top and a hole at the bottom, respectively, and with highly rotational speed, the mass imbalance is very necessary. However, because of the special structure, the air suspension of the rotor fails as soon as the flat or the hole contacts with the air hole of an air-suspending cavity. Then, the rotor cannot be suspended...