空间引力波探测卫星无拖曳控制系统微扰动机理建模研究(特邀)  

Modeling of Microvibration Mechanism of Drag-free Control System for Space Gravitational Wave Detection Satellites(Invited)

作　　者：杨政霖 李青[1,2] 邓少龙 王晨 张照国[1,2] 刘磊 马彩文[3] YANG Zhenglin;LI Qing;DENG Shaolong;WANG Chen;ZHANG Zhaoguo;LIU Lei;MA Caiwen(School of Astronautics,Northwestern Polytechnical University,Xi′an 710072,China;Shaanxi Aerospace Flight Vehicle Design Key Laboratory,Xi′an 710072,China;Xi′an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi′an 710119,China)

机构地区：[1]西北工业大学航天学院,西安710072 [2]陕西省空天飞行器设计重点实验室,西安710072 [3]中国科学院西安光学精密机械研究所,西安710119

出　　处：《光子学报》2025年第2期15-31,共17页Acta Photonica Sinica

基　　金：国家重点研究发展计划(No.2022YFC2203800);国家自然科学基金(Nos.52305117,52075446);西北工业大学硕士研究生实践创新能力培育基金(No.PF2024043)。

摘　　要：以“天琴三号”概念卫星为研究对象,从力热控三个方面建立微扰动数学模型,并基于有限元方法建立卫星平台扰动传递函数模型,构建无拖曳系统微扰动集成仿真框架,仿真分析各微扰源对激光精密指向系统的影响。仿真结果表明,无拖曳系统微扰动引起的精密指向系统开环角度响应在10^(-8)~10^(-7)rad量级,其中,微推力器扰动起主要作用。因此,在设计空间引力波探测卫星的控制系统时,需要考虑无拖曳系统扰动对激光精密指向系统的影响,并且对微推力器扰动进行抑制。Space gravitational wave detection is significant for further verifying the theory of general relativity and studying the formation and evolution of the universe.However,in space gravitational wave detection constellations,the interstellar laser links are distant,which puts new requirements on the pointing accuracy of laser precision pointing systems.To compensate for the non-conservative forces on the satellite platform to follow the motion of the test mass,this is usually achieved by a drag-free system utilizing microthruster actuation.However,while the drag-free system compensates for the external nonconservative forces,the perturbation of the microthruster,the measurement noise of the sensors,and the small adjustments of the platform's attitude and position may lead to the angular perturbation of the precision pointing system and thus reduce the pointing accuracy.Therefore,it is necessary to conduct modeling research on the mechanism of micro-perturbations of the drag-free system.Considering that the satellite platform may be affected by various micro-perturbations,including solar light pressure perturbation,temperature interference,and control system micro-perturbations,this paper models the micro-perturbations from three different aspects:mechanics,thermodynamics,and control.In the microperturbation dynamics modeling,this paper mainly considers the solar light pressure modeling and the dynamic modeling of the test mass micro-perturbation.Additionally,the modeling and analysis of the mechanism of high-order coupling effect micro-perturbations are carried out.For the solar light pressure modeling,this paper refers to the data of VIRGO to establish a solar light pressure perturbation model considering the influence of random fluctuations in solar light pressure.Since the test mass tracked by the satellite platform does not directly apply a disturbing force to the platform,but the small adjustments in position and attitude when tracking the test mass,as well as the control force applied by the actuator,can both

关 键 词：引力波探测 无拖曳系统 微振动 激光指向抖动噪声 集成建模 

分 类 号：V11[航空宇航科学与技术—人机与环境工程]