面向非均匀不连续X射线望远镜的最优化精密温控方法与试验验证  

Optimized precision temperature control method and experimental validation for non-uniform discontinuous X-ray telescope

作　　者：张晓峰 冯建朝 马佳 廖星 张永合 陈勇[2] ZHANG Xiaofeng;FENG Jianchao;MA Jia;LIAO Xing;ZHANG Yonghe;CHEN Yong(Innovation Academy for Microsatellites of Chinese Academy of Sciences,Shanghai 201203,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院微小卫星创新研究院,上海201203 [2]中国科学院高能物理研究所,北京100049

出　　处：《光学精密工程》2024年第14期2225-2235,共11页Optics and Precision Engineering

基　　金：中国科学院空间科学战略性先导科技专项(二期)资助(No.XDA15310000)。

摘　　要：本文旨在实现EP卫星X射线望远镜的精密控温,通过建立Wolter-I型掠入射X射线望远镜数学传热模型,揭示了热量在聚焦镜组中的传递规律,并设计了两类主动控温加热器。针对望远镜非均匀、不连续构型导致的热场调控难题,提出了最优化精密控温方法,兼顾控温指标与工艺研制难度,构建了关于热量补偿如何分区调配的代价函数。通过设置关于平均偏差、最大偏差、区域个数、最小区域长度的权重参数,获得了第一类加热器最优化设计方案。整星级真空试验结果表明:54个镜片温度范围为19.1~20.9℃,且时域温度稳定性较好,波动小于0.2℃,满足X射线望远镜(20±1)℃的指标要求,权重参数设计合理。本研究提出的方法,成功应对了非均匀、不连续X射线望远镜精密控温难题,为温度要求较高的空间科学探测器提供了技术支持。In this paper,we aim to realize the precision temperature control of EP satellite X-ray tele⁃scope.By establishing the mathematical heat transfer model of Wolter-I swept-incidence X-ray telescope,heat transfer law in the focusing mirror group is revealed,and two types of active temperature control heat⁃ers are designed.In view of the difficulty in regulating the thermal field caused by the non-uniform and dis⁃continuous configuration of the telescope,an optimized precision temperature control method was pro⁃posed,taking into account the temperature control index and the difficulty of process development,and a cost function was constructed on how to partition and deploy the heat compensation.By setting the weight⁃ing parameters of average deviation,maximum deviation,number of zones and minimum zone length,the optimal design of the first type of heater was obtained.The whole-satellite vacuum test results show that:the temperature range of 54 lenses is 19.1~20.9℃,and the time domain temperature stability is good,the fluctuation is less than 0.2℃,which meets the index requirement of(20±1)℃for X-ray telescope,and the weighting parameters are reasonably designed.The method proposed in this study successfully copes with the problem of precision temperature control for non-uniform and discontinuous X-ray tele⁃scopes,and provides technical support for space science detectors with high temperature requirements.

关 键 词：精密控温 最优化 X射线 非均匀不连续 EP卫星 

分 类 号：V41[航空宇航科学与技术—航空宇航推进理论与工程] V447.1