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磁场系统作为磁光阱的重要组成部分,在高精度冷原子陀螺仪中占着重要地位。随着陀螺体积的减小和集成度的提高,磁场系统的制造和装调误差对陀螺性能的影响不断增大。这些误差将引起磁场零点漂移和磁场梯度变化,降低捕获效率和原子团的质量,从而影响陀螺性能。该文通过理论分析对二维磁场系统的主要制造和装调误差进行了筛选,并利用实验设计和Ansoft仿真完成了“虚拟”实验。基于实验结果的数学回归,对关键制造和装调参数设计了合理的容差限,并进行了试制验证。该工作为小型化冷原子陀螺仪二维磁场系统的设计和制造提供了理论指导。
Magnetic field system as an important part of the magneto-optical trap, occupy an important position in high-precision cold atomic gyro. As gyro volume decreases and integration increases, manufacturing and setup errors of the magnetic field system have an increasing impact on gyro performance. These errors will cause zero drift of the magnetic field and changes in the magnetic field gradient, reducing the capture efficiency and the quality of the atomic mass, thus affecting the gyro performance. In this paper, the main manufacturing and assembly error of two-dimensional magnetic field system are screened through theoretical analysis. The “virtual” experiment is completed by the experimental design and Ansoft simulation. Based on the mathematical regression of the experimental results, a reasonable tolerance limit is designed for the key manufacturing and assembly parameters, and the prototype is validated. This work provides theoretical guidance for the design and manufacture of two-dimensional magnetic field system for miniaturized cold atomic gyroscope.