新型低温哨音超流体陀螺模型

Modeling of New Quantum Whistling Superfluid Cryogenic Gyroscope

针对应用超流体发展高精度新型陀螺的可行性,研究利用交流约瑟夫森效应的低温超流体陀螺原理和典型方案.首先对陀螺的交流约瑟夫森效应、转动信息与交流约瑟夫森频率关系以及检测等环节建模,并进行系统仿真.验证了陀螺敏感恒定角速度(地球自转)的过程,进一步研究变输入角速度跟踪、敏感面积及薄膜面积等结构参数对精度的影响.仿真结果表明,应用交流约瑟夫森效应的低温超流体陀螺原理发展新型高精度陀螺仪是可行的.

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.