激光陀螺跳模规律研究  

Study on mode hopping in ring laser gyro

作　　者：许光明[1] 王飞[1] 谢元平[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》2014年第2期502-505,共4页Infrared and Laser Engineering

摘　　要：激光陀螺长期工作或环境温度变化较大时有可能发生跳模现象,跳模会对陀螺的性能带来较大的影响。通过对激光陀螺相邻模的背向散射特性的分析,发现背向散射光强呈现周期性,且与工作模式之间存在严格的对应关系,由此得出激光陀螺跳模规律,即跳在相同的模式上陀螺性能前后没有明显变化,而跳在相邻模式上会引起陀螺锁区变大、零偏发生跳变,给性能带来较大影响。针对跳模规律提出了合理的跳模控制建议,并通过实验验证了上述结论。Laser gyroscope working mode is likely to hop when it works for a long time or the ambient temperature changes greatly. To change the mode of the laser gyro will bring a great impact on it＆#39;s performance. Based on the analysis to the backscattering properties in the adjacent model of laser gyro, the backscattering intensity is periodic, and there is a strict correspondence between the working mode and backscattering intensity. The laser gyro mode hopping pattern is that if the model of laser gyro jumps in the same model gyro performance before and after does not change significantly, while it jumps in the adjacent model gyro′s lock-in will arise and bias will jump, and gyro performance is affected greatly. According to the mode hopping law the reasonable suggestion was put forward, the above conclusions were proved by the experiment.

关 键 词：激光陀螺 工作模式 跳模 零偏 背向散射 

分 类 号：V241.558[航空宇航科学与技术—飞行器设计]