摆式陀螺寻北仪房体质心研究

陀螺房体是摆式陀螺寻北仪的一个重要组成部分，陀螺房体中的配重改变陀螺房体喷心下移，陀螺自转轴受外力矩作用而跟踪当地地理子午面，陀螺仪能够自动寻北。配重因子是直接影响陀螺仪寻北精度和寻北时间的参量，为了合理设计配重因子，本文首先分析了地球自转对陀螺仪的影响，其次推导了用配重修正的陀螺仪运动方程，最后结合实例研究了房体喷心对陀螺仪运动的影响，以期为研制摆式陀螺寻北仪提供理论依据。

Gyro house is an important component in pendular gyro north seeker. Because the attached mass makes gyro house eentroid move down and the rotation axis of gyro is forced by an external torque to track local geography meridian plane, gyro north seeker can automatically seek north direction. The attached mass factor is a parameter directly influencing north-seeking precision and north-seeking time. In order to design the attached mass appropriately, firstly the effect of earth rotation on gyro is analyzed. Secondly, the movement equation of gyro revised by the attached mass is deduced. Finally, the influence of the attached mass on movement of gyro is researched, which will provide theoretical basis for pendular gyro north seeker developnlent.