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A review on DFACS(I):System design and dynamics modeling

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Chinese Journal of Aeronautics 2024年第5期37卷 92-119页

作者： Bohan JIAO Qifan LIU Zhaohui DANG Xiaokui YUE yonghe zhang Yuanqing XIA Li DUAN Qinglei HU Chenglei YUE Pengcheng WANG Ming GUO Zhansheng DUAN Bing CUI Chu zhang Xiaodong SHAO School of Astronautics Northwestern Polytechnical UniversityXi’an 710072China Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 710699China School of Automation Beijing Institute of TechnologyBeijing 100081China Institute of Mechanics Chinese Academy of SciencesBeijing 710043China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China School of Automation Science and Engineering Xi’an Jiaotong UniversityXi’an 710049China

The Drag-Free and Attitude Control System(DFACS)is a critical platform for various space missions,including high precision satellite navigation,geoscience and gravity field measurement,and space scientific *** paper presents a comprehensive review of over sixty years of research on the design and dynamics model of ***,we examine the open literature on DFACS and its applications in Drag-Free missions,providing readers with necessary background information on the ***,we analyze the system configurations and main characteristics of different DFACSs,paying particular attention to the coupling mechanism between the system configuration and dynamics ***,we summarize the dynamics modeling methods and main dynamics models of DFACS from multiple perspectives,including common fundamentals and specific ***,we identify current challenges and technological difficulties in the system design and dynamics modeling of DFACS,while suggesting potential avenues for future *** paper aims to provide readers with a comprehensive understanding of the state-of-the-art in DFACS research,as well as the future prospects and challenges in this field.

关键词： Drag-Free DFACS System Design Dynamics Modeling Control design

A review on DFACS(II):Modeling and analysis of disturbances and noises

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Chinese Journal of Aeronautics 2024年第5期37卷 120-147页

作者： Chenglei YUE Bohan JIAO Zhaohui DANG Xiaokui YUE yonghe zhang Yuanqing XIA Li DUAN Qinglei HU Qifan LIU Pengcheng WANG Ming GUO Zhansheng DUAN Bing CUI Chu zhang Xiaodong SHAO School of Astronautics Northwestern Polytechnical UniversityXi’an 710072China Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 710699China School of Automation Beijing Institute of TechnologyBeijing 100081China Institute of Mechanics Chinese Academy of SciencesBeijing 710043China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China School of Automation Science and Engineering Xi’an Jiaotong UniversityXi’an 710049China

This paper presents Part II of a review on DFACS,which specifically focuses on the modeling and analysis of disturbances and noises in *** Part I,the system composition and dynamics model of the DFACS were *** this paper,we discuss the effects of disturbance forces and noises on the system,and summarize various analysis and modeling methods for these interferences,including the integral method,frequency domain analysis method,and magnitude evaluation *** analyzing the impact of disturbances and noises on the system,the paper also summarizes the system’s performance under slight ***,we highlight current research difficulties in the field of DFACS noise ***,this paper provides valuable insights into the modeling and analysis of disturbances and noises in DFACSs,and identifies key areas for future research.

关键词： Drag-free DFACS Disturbance Analysis Noise Analysis Frequency Domain Analysis Performance Evaluation

Application and prospect of the fluid cooling system of solar arrays for probing the Sun

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Astronomical Techniques and Instruments 2024年第1期1卷 62-70页

作者： Kangli Bao Xiaofei Zhu Jianchao Feng Liu Liu Xiaofeng zhang Zhiming Cai Jun Lin yonghe zhang Innovation Academy for Microsatellites of Chinese Academy of Sciences Shanghai 201304China Yunnan Observatories Chinese Academy of SciencesKunming 650216China

The Solar Close Observations and Proximity Experiments(SCOPE)mission,which has been proposed by the Yunnan Observatories,Chinese Academy of Sciences,aiming to operate at a distance of 5 to 10 solar radii from the Sun,plans to complete the in situ detection of the solar eruption process and observation of the magnetic field structure *** solar flux received by the satellite ranges from 10^(3) to 10^(6) Wm^(-2),which poses challenges for thermal management of the solar *** this work,the solar array cooling system of the Parker Solar Probe is discussed,the developments of the fluid loop technique are reviewed,and a research plan for a next-generation solar array cooling system is *** paper provides a valuable reference for novel thermal control systems in spacecraft for solar observation.

关键词： In situ detection of solar eruption Solar array cooling system Pumped fluid loop High heat flux dissipation

(Sm_(1-x)Er_(x))_(2)(Zr_(0.7)Ti_(0.3))_(2)O_(7)陶瓷材料的热物理性能研究

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中国稀土学报 2024年第3期42卷 515-521页

作者：牟仁德谢敏张永和王志刚宋希文中国航发北京航空材料研究院航空材料先进腐蚀与防护航空科技重点实验室北京100095 内蒙古科技大学材料与冶金学院内蒙古包头014010

采用固相合成法制备了(Sm_(1-x)Er_(x))_(2)(Zr_(0.7)Ti_(0.3))_(2)O_(7)(x=0,0.2,0.4)陶瓷材料,研究其物相结构及热物理性能。结果表明:(Sm_(1-x)Er_(x))_(2)(Zr_(0.7)Ti_(0.3))_(2)O_(7)(x=0,0.2,0.4)陶瓷材料均为单一立方烧绿石结构,晶格常数随Er^(3+)掺杂量的增加而降低。掺杂Er_(2)O_(3)可显著降低Sm_(2)(Zr_(0.7)Ti_(0.3))_(2)O_(7)陶瓷材料的热导率,屏蔽热辐射,减缓高温下热导率异常上升的趋势。Er^(3+)部分取代Sm^(3+)导致陶瓷材料的热膨胀系数从11.52 K^(-1)降低到10.89 K^(-1),但仍与YSZ陶瓷材料的热膨胀系数接近,满足热障涂层材料的应用要求。

关键词：热障涂层陶瓷热导率热膨胀系数掺杂锆酸钐

Space advanced technology demonstration satellite

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Science China(Technological Sciences) 2024年第1期67卷 240-258页

作者： zhang XiaoFeng CHEN Wen ZHU XiaoCheng MENG Na HE JunWang BI XingZi zhang yonghe SHI Qi LI Fei LIU Rui FENG ZhengGong LIU Liu LI JinSong WU HaiChen XU DongXiao LI TaiJie HUANG JiangJiang LIU Shuo LI TianTong YU XianSheng GAO Yang ZHOU Heng BAN HanYu zhang YanLi zhang YueTing YANG YingQuan HE Tao DUAN XuLiang CHEN Xin WANG YaMin SUN AnTai zhang KuoXiang SUN Ying WANG YaoBin FAN ChengCheng XIONG ShaoLin LI XinQiao WEN XiangYang LING ZhiXing SUN XiaoJin zhang Chen BAI XianYong WANG ZhanShan DENG YuanYong TIAN Hui YANG JianFeng XUE HongBo SANG Peng LIU JinGuo ZHENG HuiLong ZHU Xiang HE JianWu LI Hui XU LuXiang XU ShuYan CHEN WenWu LIU ZhenDong WANG ZhaoLi MAO XiangLong GAO Rong LI ZongXuan DING GuoPeng WANG XinYu DOU RunJiang WENG LuBin LUO Hao WANG YaPing LIANG XianFeng FANG ZiRuo Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 201203China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China National Astronomical Observatory of China Beijing 100101China Shanghai Institute of Technical Physics Chinese Academy of SciencesShanghai 200083China Institute of Precision Optical Engineering School of Physics Science and EngineeringTongji UniversityShanghai 200092China School of Earth and Space Sciences Peking UniversityBeijing 100871China Xi’an Institute of Optics and Precision Mechanics Chinese Academy of SciencesXi’an 710119China National Space Science Center Chinese Academy of SciencesBeijing 100190China Shenyang Institute of Automation Chinese Academy of SciencesShenyang 110016China Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China Institute of Mechanics Chinese Academy of SciencesBeijing 100190China Shanghai Institute of Organic Chemistry Chinese Academy of SciencesShanghai 200032China Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China Nanyang Technological University Singapore 569830Singapore Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023China Technical Institute of Physics and Chemistry Chinese Academy of SciencesBeijing 100049China Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China Institute of Semiconductors Chinese Academy of SciencesBeijing 100083China Institute of Automation Chinese Academy of SciencesBeijing 100190China School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310058China

The Space Advanced Technology demonstration satellite(SATech-01),a mission for low-cost space science and new technology experiments,organized by Chinese Academy of Sciences(CAS),was successfully launched into a Sun-synchronous orbit at an altitude of~500 km on July 27,2022,from the Jiuquan Satellite Launch *** as an experimental platform for space science exploration and the demonstration of advanced common technologies in orbit,SATech-01 is equipped with 16 experimental payloads,including the solar upper transition region imager(SUTRI),the lobster eye imager for astronomy(LEIA),the high energy burst searcher(HEBS),and a High Precision Magnetic Field Measurement System based on a CPT Magnetometer(CPT).It also incorporates an imager with freeform optics,an integrated thermal imaging sensor,and a multi-functional integrated imager,*** paper provides an overview of SATech-01,including a technical description of the satellite and its scientific payloads,along with their on-orbit performance.

关键词： SATech-01 spacecraft design scientific instruments on-orbit performance

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基于模型和样条的星敏感器在轨自标定方法

光学学报 2024年第12期44卷 262-270页

作者：闫浩东支帅陈旭睿李照雄丁国鹏张洋洋张永合朱振才中国科学院微小卫星创新研究院卫星数字化重点实验室中国科学院大学上海科技大学信息科学与技术学院

星敏感器长期在轨运行时，畸变会逐渐积累，因此对星敏感器进行在轨标定很有必要。目前，大多数星敏感器在轨标定算法仅依赖于星间角距的不变性，并需要较长的标定时间。本文算法的创新性在于利用星间角距关系和星点像素位置关系，将畸... 详细信息

星敏感器长期在轨运行时，畸变会逐渐积累，因此对星敏感器进行在轨标定很有必要。目前，大多数星敏感器在轨标定算法仅依赖于星间角距的不变性，并需要较长的标定时间。本文算法的创新性在于利用星间角距关系和星点像素位置关系，将畸变信息解耦为粗校准的参数化信息和精校准的非参数化信息。充分考虑到星敏感器的工作性质，利用B样条算法的特点，使得连续的在轨校正仅需极少的时间。相较于目前常用的地面标定算法，本文算法在实现更准确的星点位置校正和更精确的姿态输出精度的前提下，训练完全部数据只需要几百毫秒的时间。在经过本文算法的标定后，在轨星敏感器的星点位置偏差由0.55766 pixel降低为0.23706 pixel，测量精度由5.857″提高到2.775″，这为未来低成本卫星搭载非专业化设计的星敏感器提供了一定的算法参考。

关键词：星敏感器光学畸变在轨标定 B样条算法图像处理

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幼儿发展评价的智能技术框架构想

上海教育评估研究 2024年第3期13卷 37-42页

作者：张永和屈文姣巫远锦深圳大学教育学部广东深圳518060

幼儿发展评价是学前教育评价的核心组成部分,在实践中却处于“边缘”地带,面临着内容繁杂、方法低效、分析不足以及反馈单一等现实困境。鉴于当前基于智能技术破解教育评价难题的应用趋势,研究提出智能技术赋能幼儿发展评价的四大破解之... 详细信息

幼儿发展评价是学前教育评价的核心组成部分,在实践中却处于“边缘”地带,面临着内容繁杂、方法低效、分析不足以及反馈单一等现实困境。鉴于当前基于智能技术破解教育评价难题的应用趋势,研究提出智能技术赋能幼儿发展评价的四大破解之法:虚实结合、智能感知、多模态融合以及可视化推送。在此基础上形成幼儿发展评价的智能技术框架构想,包括四层级技术框架与五环节实施路径,旨在通过智能技术破解幼儿发展评价难题,实现“以评促教”的评价功能,逐步提升我国学前教育保教水平。

关键词：幼儿发展评价学前教育评价教育评价智能技术

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家园共育视域下的智能化幼儿发展评价

上海教育评估研究 2024年第2期13卷 38-43页

作者：张永和屈文姣巫远锦深圳大学教育学部广东深圳518000

在家园共育视域下,研究发现家长参与的幼儿发展评价存在评价观念偏颇、评价参与表浅以及评价沟通不足等现实困境。以幼儿发展评价在智能技术驱动下所面临的智能化升级为契机,构筑智能化幼儿发展评价双向驱动模型。该模型围绕“一个中心... 详细信息

在家园共育视域下,研究发现家长参与的幼儿发展评价存在评价观念偏颇、评价参与表浅以及评价沟通不足等现实困境。以幼儿发展评价在智能技术驱动下所面临的智能化升级为契机,构筑智能化幼儿发展评价双向驱动模型。该模型围绕“一个中心、双向驱动、三个阶段以及多次迭代”的内容要旨,依托智能评价系统落实三阶段幼儿发展评价实施流程,具有权责分明、精准施测以及交互充分的应用优势,有助于发挥家园共育的协同育人价值。

关键词：幼儿发展评价学前教育教育评价家园共育

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Sc_(2)O_(3)和Y_(2)O_(3)复合掺杂ZrO_(2)热障涂层陶瓷材料的组织结构与力学性能

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材料工程 2024年第6期52卷 139-146页

作者：王志刚刘仍谦谢敏张永和王炫力宋希文常振东刘德林牟仁德内蒙古科技大学材料科学与工程学院内蒙古包头014010 轻稀土资源绿色提取与高效利用教育部重点实验室(内蒙古科技大学) 内蒙古包头014010 中国航发北京航空材料研究院北京100095

质量分数为7±1%氧化钇部分稳定氧化锆(7YSZ)是广泛应用的热障涂层陶瓷材料。然而,其在1200℃以上长期服役存在相稳定性差、烧结加剧和力学性能下降等弊端。因此,本工作提出新型Sc_(2)O_(3)-Y_(2)O_(3)协同掺杂ZrO_(2)热障涂层陶瓷材料... 详细信息

质量分数为7±1%氧化钇部分稳定氧化锆(7YSZ)是广泛应用的热障涂层陶瓷材料。然而,其在1200℃以上长期服役存在相稳定性差、烧结加剧和力学性能下降等弊端。因此,本工作提出新型Sc_(2)O_(3)-Y_(2)O_(3)协同掺杂ZrO_(2)热障涂层陶瓷材料,采用固相合成法制备了摩尔分数为7.5%Sc_(2)O_(3)-x%Y_(2)O_(3)-(92.5-x)%ZrO_(2)(x=0,0.1,0.2,0.3)陶瓷。通过X射线衍射仪(XRD)、场发射扫描电镜(SEM)等手段,重点探究Y_(2)O_(3)掺杂含量对高温固相合成陶瓷材料的微观组织结构演变行为以及维氏硬度、断裂韧性、弹性模量和三点抗弯强度等力学性能的影响规律。结果表明:Sc_(2)O_(3)-Y_(2)O_(3)复合掺杂ZrO_(2)陶瓷材料经1450℃×3.5 h高温烧结的致密度大于97%,主要由四方相结构组成,该材料的维氏硬度、弹性模量、断裂韧性和三点抗弯强度与传统8YSZ相当,分别为13~14 GPa,211~214 GPa,6.5~7.0 MPa·m^(1/2),520~850 MPa之间;断裂机制主要为穿晶断裂和沿晶断裂的混合方式,其中以穿晶断裂为主导。Sc_(2)O_(3)-Y_(2)O_(3)复合掺杂ZrO_(2)陶瓷可作为一种潜在的高温热障涂层陶瓷材料。

关键词：热障涂层稀土掺杂氧化锆氧化钪微观组织力学性能

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