摘要
提出了自由陀螺式静电陀螺找北仪的原理，并给出了系统测试结果。自由陀螺式静电陀螺找北仪采用角度法寻北方案，在工作中陀螺处于自由状态，通过光电传感器观测陀螺转子的表观运动角度，经过数据处理，得出方位角。为了降低陀螺漂移逐次启动不重复性对寻北精度的影响，系统引入两位置差动测量方法。实验表明，依据提出的方案研制的静电陀螺找北仪寻北时间小于３０ｍｉｎ，寻北精度可达１５″
This paper presents the scheme and experimental results of a high accuracy free gyro electrostatic gyroscope(ESG) north seeking instrument. Azimuth of the north seeking instrument is computed from the outputs of sensors in gyro drift angle. Advantages of the scheme are of making full use of high accuracy ESG to measure the north and east vector of Earth angular velocity in spinning. In order to reduce the disturbing torque inside and outside of the ESG, the ESG is free and the turning table is static when north seeking is applied. The two position measuring method is also introduced in this system to reduce the demands on gyro drift repeatability in the instrument every starting. It has been proved by experimental results that the azimuth angle resolution of the free gyro ESG north seeking instrument gets to 15″.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1997年第11期17-19,共3页
Journal of Tsinghua University(Science and Technology)
关键词
找北仪
陀螺找北仪
静电陀螺
自由陀螺式
north seeking instrument
gyrotheodolite
electrostatic gyroscope (ESG)
