摘要
四频激光陀螺光强稳定控制后两种不同模式下的零漂在高低温实验中表现出非常明显的差异,其中一种模式的零漂在温度单方向变化时存在一定的振荡,而另一种模式的零漂与温度基本上是线性关系,并且具有良好的重复性。针对这一现象,根据四频激光陀螺的基本理论,分析得出导致这种高低温下不同模式零漂随温度变化不同的主要物理根源可能是差损零漂项和恒磁偏频零漂项随温度变化关系的不同。同时指出四频激光陀螺如果采用温度补偿来提高其精度,则温补系数必须在实际使用的模式下确定才有意义。
In high-low temperature experiments,the null shift of the four-mode laser gyro whose beam intensity is stablely controlled in two different modes is very different.The null shift vibrates in one mode but changes linearly with temperature in the other one.Aiming at this phenomenon,through the analysis based on the basic theory,the physical reason that the differential lose null shift and the constant magnetism biasing null shift change differently with temperature in different modes is found.If using temperature compensation to improve the precision of the four-mode laser gyro,the coefficient must be gotten in the same mode which is selected by actual use.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2010年第8期2295-2298,共4页
Acta Optica Sinica
基金
总装重点项目(9140A09010807KG0191)资助课题
关键词
四频激光陀螺
高低温
零漂
不同模式
振荡
four-mode laser gyro
high-low temperature
null shift
different modes
vibration
