激光陀螺设计时均采用光强控制系统和程长控制系统。依据控制系统理论,建立了棱镜式激光陀螺光强控制系统传递函数。用实验测试的方法建立了环形激光器在光强控制系统中的等效数学模型,通过理论分析和Matlab仿真,能够准确评估激光陀螺光强控制系统的性能,为系统设计提供了理论依据,提高了陀螺性能和调试效率。 Laser gyro design are used light intensity control system and Cheng long control system. According to the control system theory, the transfer function of the prism laser gyroscope intensity control system is established. The equivalent mathematic model of ring laser in light intensity control system is established experimentally and experimentally. By theoretical analysis and Matlab simulation, the performance of laser gyro light intensity control system can be evaluated accurately, which provides theoretical basis for system design and improves Gyro performance and debug efficiency.