Abstract:

     The principle and typical project of the superfluid cryogenic gyroscope using ac-Josephson effects is studied to develop a high precision gyroscope based on superfluid. Mathematical model of the gyroscope including ac-Josephson effects, relations between rotation and ac-Josephson frequency, and signal detection method is obtained. The process of gyroscope sensing constant angular velocity (earth rotation) is simulated. Scouting angular velocity changes with time and the effects on precision due to structural parameters such as sense area and diaphragm area are studied. Simulation results show that it is feasible to develop a new high precision gyroscope based on ac-Josephson effects.

Key words: new gyroscope , superfluid , ac-Josephson effects , modeling and simulation