分析了激光陀螺在经历外部环境温度变化时光强和性能发生变化的原因,提出了利用新型腔长角度控制镜(光路程长控制镜)的角度控制元件作为驱动器件,应用类似小抖动稳频的原理对激光陀螺环形光路进行闭环控制,并通过对各光路控制单元采取分时控制的办法解决了光路稳定过程中的调制信号的冲突,使激光陀螺在环境变化时始终保持其光程长和光路相对位置的稳定从而保证其性能的稳定。实验结果表明,对原来在全使用温区(-40℃~+60℃)光强变化达30%甚至只要有光的,通过光路稳定措施可将光强稳定在±3%以内,对于有些在高低温时不能出光的,也可以达到可使用的光强稳定水平。较好地解决了许多激光陀螺难以克服的耐高、低温冲击问题。 The reason why the laser gyro changes its light intensity and performance when it is experiencing changes in the external ambient temperature is analyzed. An angle control element with a new cavity long-angle control mirror (optical path length control mirror) is proposed as a driving device. Principle of closed-loop control of laser gyro ring optical path, and through the optical control unit to take time-sharing control method to solve the stability of the optical signal modulation process of the conflict so that the laser gyro always change its environment when the optical path length and optical path The relative stability of the position to ensure the stability of its performance. The experimental results show that the light intensity can be stabilized within ± 3% of the light intensity by using the light path stabilization measures even when the light intensity changes by 30% or even as long as the light is in the fully used temperature range (-40 ° C. to + 60 ° C.) High and low temperature can not be a light, you can also reach the level of light intensity can be used. Solve a lot of laser gyro difficult to overcome the high and low temperature impact problem.