四频激光陀螺高低温过程中零漂振荡的分析  

Analysis of Four-Mode Laser Gyro′s Null Shift Vibration Under High-Low Temperature Process

作　　者：王国臣[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：《光学学报》2010年第7期2037-2040,共4页Acta Optica Sinica

基　　金：总装重点项目(9140A09010807KG0191)资助课题

摘　　要：四频激光陀螺在高低温实验中的零漂变化非常复杂,温度单方向变化时零漂会呈振荡形式,这是四频激光陀螺温度效应中一个难以解释和解决的难题。在常温下改变四频激光陀螺的放电电流来模拟变温过程中光强的变化,发现零漂随光强的变化也呈现出振荡形式。从而得知,导致四频激光陀螺变温过程中零漂振荡的一个主要因素是温度单方向变化导致光强的变化,而光强的变化导致零漂的改变。如果四频激光陀螺的光强能够在高低温实验中保持不变,则零漂在高低温变化中的剧烈振荡会得到有效的抑制。通过光强稳定控制下的高低温实验,证明以上结论是正确的。The four-mode laser gyro′s null shift is very complex under the high-low temperature process.It often vibrates when temperature changes linearly,which is a very difficult problem that cannot be explained and solved.Beam intensity changing along with temperature is simulated by changing the discharge current at room temperature,and the null shift also vibrates.So it can be concluded that temperature change induces beam intensity change,and then the null shift vibrates.If beam intensity of four-mode laser gyro can be kept constant in the high-low temperature,the null shift vibration will be effectually controlled.The conclusion is proved by the high-low temperature experiment with intensity stability.

关 键 词：四频激光陀螺 高低温 零漂 光强 振荡 

分 类 号：U661.1[交通运输工程—船舶及航道工程]