重力梯度仪mK级温度稳定度控制设计及验证  

Design and verification of a mK-level temperature fluctuation control system for gravity gradiometer

作　　者：刘伟[1] 周宇鹏[1] 伍保峰 李松明[2] 闫国瑞[2] 王啟宁 LIU Wei;ZHOU Yupeng;WU Baofeng;LI Songming;YAN Guorui;WANG Qining(Beijing Key Lab of Space Thermal Control Technology,Beijing Institute of Spacecraft System Engineering;DFH Satellite Co.Ltd.:Beijing 100094,China)

机构地区：[1]北京空间飞行器总体设计部空间热控技术北京市重点实验室 [2]航天东方红卫星有限公司,北京100094

出　　处：《航天器环境工程》2022年第6期597-603,共7页Spacecraft Environment Engineering

基　　金：国家重点研发计划项目(编号:2022YFC2204400)。

摘　　要：针对某卫星有效载荷之重力梯度仪提出的温度稳定度优于±10 mK/200 s的超高指标要求,提出了构建部件级阻容滤波网络、进行系统级隔热强化设计、高精度多级主动测控温设计以及电缆漏热控制的热控方案。热仿真分析和热平衡试验结果表明,梯度仪组件的温度稳定度优于±8 mK/200 s,满足设计指标要求,验证了该热控设计方法的可行性及有效性,可为其他有高精度高稳定度控温需求的航天器部件热控设计提供参考。Aiming at the ultra-high requirement that the temperature stability of the gravity gradiometer as a satellite payload be better than±10 mK/200 s,a comprehensive thermal control scheme was proposed including the construction of a component-level resistance-capacitance filtering network,the enhanced design of systemlevel thermal insulation,the multi-stage high-precision active temperature measurement and control,and the reduction of cable heat leakage.The thermal simulation analysis and thermal balance tests were carried out.It is shown that the temperature stability of the gradiometer components is better than±8 mK/200 s,which meets the design requirements.The feasibility and effectiveness of this thermal control design method were thus verified.It may provide a reference for the thermal control design of other spacecraft parts with high precision and high stability temperature control requirements.

关 键 词：重力梯度仪 高温度稳定度 阻容滤波网络 高精度多级控温 仿真分析 热平衡试验 

分 类 号：TP206.1[自动化与计算机技术—检测技术与自动化装置] V416.4[自动化与计算机技术—控制科学与工程]