高精度激光陀螺测角仪中的指零仪  

Null-indicator in high precision angular measurements with a RLG

作　　者：金洵[1] 黄水花[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073

出　　处：《红外与激光工程》2011年第4期651-654,共4页Infrared and Laser Engineering

摘　　要：动态测角应用广泛,技术难度大,利用激光陀螺研制的测角系统具有精度高,测量快,动态响应范围宽等特点。指零仪作为测量中的瞄准指示装置,其快速响应能力及精度尤为重要。首先介绍了利用双光束干涉法设计的指零仪的基本原理与结构组成,然后结合激光陀螺的运用背景分别从光路和电路上分析了研制过程中需要注意的问题,最后,通过实验得到了在较低转速情况下的指零信号,验证了其可行性,为进一步研究高速情况下信号的稳定性提供了基础。Dynamic angle measuring system was used widely,and was hard to realize.Dynamic angular measuring system with a ring laser gyro（RLG） has many advantages such as high precision,high measurement speed,wide dynamic response,etc.As a collimation device during the whole angle measuring process,the high speed responsibility and precision of the null indicator（NI） were important.Firstly,the fundamental theory and the composition of the NI were introduced,which was designed by double beam interference method,and then the questions which should be paid attention to in the research were analyzed,regarding the application background of the RLG.Finally,the NI signal was achieved when the rotation speed was slow,and its feasibility was validated by the experiments.At the same time,it provides the foundation for the stability research of the NI signal when the rotation speed is high.

关 键 词：指零仪 激光陀螺 动态测角 道威棱镜 

分 类 号：TH741.2[机械工程—光学工程]