捷联式航空重力仪比力系统热分析研究  

Thermal analysis for the specific force system of strapdown gravimeter for airborne survey

作　　者：李纪莲[1,2] 张开东[1] 张玘[1] 

机构地区：[1]国防科学技术大学机电工程与自动化学院,长沙410073 [2]装备学院航天装备系,北京101416

出　　处：《仪器仪表学报》2012年第4期918-923,共6页Chinese Journal of Scientific Instrument

基　　金：国家863计划重大项目(2006AA06A202);中国博士后科学基金(20090450212)资助项目

摘　　要：以国内首台具有完全自主知识产权的捷联式航空重力仪的研制为背景,分析了其比力系统中所用石英挠性加速度计的性能需求,对该加速度计进行相关热分析,并研究了力矩线圈发热及工作环境温度的波动对加速度计测量误差的影响。结果显示由力矩线圈发热产生的测量误差达0.001量级,鉴于比力系统精度对环境温度变化较敏感,应为其提供一个精度约为±0.01℃的温度控制系统。The strapdown gravimeter for airborne survey（SGA-WZ01） is the first airborne gravity measuring equipment with completely independent intellectual property rights in China.Based on the study on SGA-WZ01,the performance indexes of the quartzose flexible accelerometer in the specific force system are discussed and the thermal analysis of the accelerometer is carried out.The accelerometer measurement errors caused by ambient temperature fluctuating and torque coil heating are studied.The results show that the measurement error caused by torque coil heating can reach 0.001.Moreover,a temperature control system with the precision at least ±0.01 ℃ is needed for the specific force system,because its precision is sensitive to the temperature change of the working environment.

关 键 词：航空重力测量 加速度计 热分析 温度控制 

分 类 号：U666.122[交通运输工程—船舶及航道工程]