静电陀螺仪随动系统误差的补偿

摘要

In high-precision inertia! System composing of electrostatic suspended gyro (ESG), the disturbing torque acting on the rotor of ESG and the errors of gimbal servo systems are the main reasons that cause the drift of the ESG Case rotation can automatically compensate the most disturbing torque acting on the rotor related to the gyro case, but it can not remove the effect coming from the errors of gimbal servo systems. This paper offers a method to auto-compensate the errors of gimbal servo systems, that is, by properly offsetting the photo electric sensor from the axis of the case rotation, the coning motion of the gyro case rotation axis circulating the axis of the rotor is generated. The method does not require any additional mechanical devices, and the experiments prove the practicability and effectiveness of the method.%由静电陀螺仪构成的高精度惯性系统中,作用在转子上的干扰力矩和陀螺仪框架随动系统误差是使陀螺仪产生漂移的主要原因.用壳体旋转的方式可以自动补偿那些与壳体有关的作用在转子上的干扰力矩,而不能消除陀螺框架随动系统误差对转子的影响.为此,提出一种自动补偿框架随动系统误差的方法:将光电传感器相对壳体旋转轴调偏一定角度,把壳体旋转轴绕转子轴的锥运动添加到其旋转中.该方法不需要任何附加的机械设备,试验证明了该方法可行、有效.