大型激光陀螺几何形变对标度因数的影响

Influence of Geometric Deformation of Large Laser Gyroscope on Scale Factor

大型激光陀螺仪的标度因数对环形腔的几何形变有很强的依赖性。根据大型激光陀螺仪的结构和工作特性,对影响测量精度的关键技术进行了研究,并对影响标度因数的环形腔的几何形变进行了计算分析,得到了环形腔几何形变后的标度因数变化情况。此外,还提出了环形腔发生几何形变时标度因数的优化方法,并给出了温度和应力对标度因数影响的变化量。结论认为,在生产条件、工作环境和腔体结构相同的情况下,对标度因数进行补偿将有利于大型激光陀螺仪测量精度的提高。

The scale factor of large laser gyroscope has a strong dependence on the geometric deformation of the ring cavity.According to the structure and working characteristics of the large laser gyroscope,the key technologies affecting the measurement accuracy are studied,and the geometric deformation of the ring cavity which affects the scaling factor is calculated and analyzed.The variation of the scaling factor after the geometric deformation of the ring cavity is obtained.In addition,the optimization method of the scale factor of the ring cavity is presented,and the variation of temperature and stress on the scale factor is given.It is concluded that when the production conditions,working environments and cavity structures are same,the compensation of scale factor is beneficial to the improvement of measuring accuracy of large laser gyroscope.