空间三轴激光陀螺双通道调腔技术研究

Research on Two-channel Cavity Adjustment Technique for Orthogonal Triaxial Ring Laser Gyro

反射镜的复用减小了空间三轴激光陀螺的体积,但也增加了其调腔难度。传统调腔技术沿用单轴激光陀螺的调腔模式对空间三轴激光陀螺进行调腔,步骤复杂且耗时较长。针对此问题,结合空间三轴激光陀螺的结构特点,分析了传统调腔技术效果欠佳的原因,并提出了一种双通道调腔技术。最后搭建了实验样机,利用双通道调腔技术对空间三轴激光陀螺进行调腔,并与传统调腔技术进行了对比。结果表明,在相同失准误差的要求下,利用双通道调腔技术可使空间三轴激光陀螺的调腔时间减少约70%。

The reuse of mirrors reduces the volume of the orthogonal triaxial ring laser gyro,but also increases the difficulty of its cavity adjustment.The traditional cavity adjustment technique follows the cavity adjustment mode of single-axis ring laser gyro to adjust the cavity of the orthogonal triaxial ring laser gyro,which is complicated and time-consuming.To solve this problem,combined with the structural characteristics of the orthogonal triaxial ring laser gyro,the reasons for the poor effect of the traditional technique are analyzed,and a two-channel cavity adjustment technique is proposed.Finally,an experimental prototype is built,and comparative cavity adjustment experiments of the two techniques are conducted.The results show that under the same misalignment error requirements,the two-channel cavity adjustment technique can reduce the time consumption of orthogonal triaxial ring laser gyro cavity adjustment by about 70%.