空间静电加速度计地面测试方法、技术与应用  

On-Ground Test Method,Technology and Application of Space Electrostatic Accelerometer

作　　者：屈少波 白彦峥 刘力 马云 王梁 吴书朝 于健博 周泽兵 QU Shaobo;BAI Yanzheng;LIU Li;MA Yun;WANG Liang;WU Shuchao;YU Jianbo;ZHOU Zebing(National Precision Gravity Measurement Science Research Center,Wuhan 430074,China;Center of Gravitational Experiments,School of Physics,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]国家精密重力测量科学研究中心,湖北武汉430074 [2]华中科技大学物理学院引力中心,湖北武汉430074

出　　处：《武汉大学学报（信息科学版）》2024年第11期2028-2036,共9页Geomatics and Information Science of Wuhan University

基　　金：精密重力测量国家重大科技基础设施资助项目;国家重点研发计划(2020YFC2200702,2020YFC2200502,2020YFC2200804,2021YFC2202504,2022YFC2204404,2023YFC2205703);国家自然科学基金(11727814,11975105,12075092,42274229)。

摘　　要：卫星重力测量是获取全球重力场数据的唯一直接手段,静电加速度计是卫星重力测量的核心载荷,具有分辨率高、量程小的特点,其性能检测与评估手段缺乏,直接限制中国空间静电加速度计的研制水平与应用效能。面向高精度空间静电加速度计性能测试与评估的需求,开展了高压悬浮、扭摆悬挂、自由落体等地面测试方法研究及其相关技术和装置研制。采用多种方法结合,完成了高精度空间静电加速度计系列产品的功能性能评估,形成了一套适用于高精度空间静电加速度计地面性能评估的综合测试方法体系,满足了中国重力卫星等多个航天任务高精度空间静电加速度计性能评估的需求。Objectives:Satellite gravity measurement is the only direct means to obtain the global gravity field data.As the core payload of satellite gravity measurement,electrostatic accelerometer has the charac⁃teristics of high resolution and small measurement range.The lack of performance detection and evaluation means directly limits the development level and application efficiency of space electrostatic accelerometer in China.Methods:To meet the requirements of performance evaluation of high-precision accelerometers,re⁃search on ground test methods such as high-voltage suspension,torsion pendulum suspension,drop-tower test and development of the related technologies and devices have been carried out.The functional perfor⁃mance evaluation of high-precision electrostatic accelerometer series products was completed by combining various methods.Results:The high-voltage levitation test method was used to realize the long-term elec⁃trostatic suspension control of the test mass.Combined with the high-performance vibration isolation sys⁃tem,the ground test level reached 3×10−9 m/s2/Hz1/2 at 0.2 Hz.A torsional pendulum suspension test method was proposed,and the noise floor of the accelerometer reached about 2×10−11 m/s2/Hz1/2.And the six-degree-of-freedom control performance of the accelerometer was tested on the ground based on a vacuum tower drop device with a height of 20 m.Conclusions:A comprehensive test method system suitable for ground performance evaluation of high-precision space electrostatic accelerometers has been developed,which meets the needs of performance evaluation of high-precision accelerometers in the chinese gravity sat⁃ellites and other space missions.

关 键 词：重力卫星 静电加速度计 性能测试 高压悬浮 扭摆悬挂 落塔 

分 类 号：TH761[机械工程—仪器科学与技术]