光纤陀螺捷联惯导温控系统热仿真技术研究  

Thermal Simulation Technology in Temperature Control System Design of FOG Strapdown Inertial Navigation System

作　　者：陈永奇[1] 张春熹[1] 任卓恒[1] 崔佳涛[1] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100083

出　　处：《系统仿真学报》2008年第4期1049-1051,1059,共4页Journal of System Simulation

基　　金：二炮预研项目

摘　　要：首先分析了温度对光纤陀螺性能影响的机理,并提出初步的温控方案,为了使温控方案达到最优,建立了光纤陀螺捷联惯导系统热模型,并进行了试验验证,然后利用基于计算流体动力学数值法的热分析软件Flotherm对其进行了热仿真分析,通过调整温度采集点位置,以及控制方案等,对温控系统进行了优化设计,在保证系统精度的前提下,提高了系统环境温度适应性能。Firstly the influence of the environment temperature to FOG （fiber-optic gyroscope） accuracy was introduced. In order to ensure the performance of the FOG, a kind of temperature control system was brought forward. Then it was discussed that how to build the thermal model of the FOG SINS （strapdown inertial navigation system） and verify the simulation results through experiments. The thermal analysis software （Flotherm） based on CFD （Computational Fluid Dynamics） was used to simulate the temperature control system of the SINS. Through comparing and analyzing, the validity of FOG thermal testing position and the way of heater＇s placement could be proved. The design optimized the temperature control project through adjusting power of the heaters. It not only helps to ensure the accuracy of FOG, but also helps to improve the environment temoerature adaotability.

关 键 词：光纤陀螺 捷联 惯导 温度控制 热仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]