激光陀螺应用过程中磁效应引起零偏的变化对陀螺精度会产生重要影响。对于激光陀螺的磁效应,建立了理论模型,分析了产生磁效应的诸多因素。分析结果表明,谐振腔光路的轻微非共面是激光陀螺磁敏感产生的主要原因,可以通过调整一个腔平移镜的轴线方向来减小光路的非共面角,进而达到减小激光陀螺磁灵敏度的目的,并通过实验验证了上述结论。 The change of zero bias caused by the magnetic effect during the application of the laser gyro will have an important influence on the gyro precision. For the magnetic effect of the laser gyro, a theoretical model is established, and many factors that produce the magnetic effect are analyzed. The analysis shows that the slight non-coplanarity of the optical path of the resonator is the main reason for the magnetostrictiveness of the laser gyro. The non-coplanar angle of the optical path can be reduced by adjusting the axial direction of a cavity translating mirror so as to reduce the magnetic sensitivity of the laser gyro The purpose of this experiment is verified by the above conclusions.