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静电陀螺仪是当今世界上精度最高的陀螺仪，研制静电陀螺寻北仪是为了寻求高精度的方位测量仪器。采用静电陀螺仪组成寻北仪可采用以下两种方式：力反馈方式和自由陀螺方式。前者水平方向包含两个力反馈回路，通过测量反馈回路电流得出方位角。后者陀螺自由转动数分钟，通过测量静电陀螺水平轴偏角得出方位角。该文讨论了力反馈方式和自由陀螺方式静电陀螺寻北仪力学原理，其中包括两种方式下坐标变换及获得方位角的算法推导，并得出结论。
Electrostatic gyroscope is the most accurate gyroscope in the world today. The development of electrostatic gyroscopes is aimed at seeking high-precision azimuth measuring instruments. The use of electrostatic gyroscope North Finder can be composed of the following two ways: force feedback and free gyro. The former contains two force feedback loops in the horizontal direction, and the azimuth is obtained by measuring the feedback loop current. The gyro rotates freely for a few minutes, and the azimuth is obtained by measuring the declination of the horizontal axis of the electrostatic gyro. This paper discusses the mechanics of force feedback and free gyro gyro north-finder gyro, which includes the derivation of the coordinate transformation and azimuth derivation from the two methods and the conclusion.