重力梯度测量卫星无拖曳控制技术

摘要

无拖曳控制是当前和未来若干空间任务中的一项关键技术.以重力梯度测量卫星为对象,对无拖曳控制回路进行深入剖析,包括对静电引力梯度仪、离子推力器和空间环境的模型与建模方法及无拖曳控制律设计方法的综述.借鉴GOCE卫星(gravity field and steady-state ocean circulation explorer)的成功经验并结合国内离子推力器和静电悬浮加速度计的研制现状,对未来发展我国重力梯度测量卫星无拖曳控制进行难点分析与展望.%Drag-free control is a key technology for some present and future space missions.This paper deeply analyzes the drag-free control technology of gravitational gradiometry satellites,with electrostatic gravity gradiometer,ion thruster,space environment and drag-free control law included in the drag-free loop.Referring to the successful experiences of GOCE and linking with the development status of ion thruster and electrostatic suspended accelerometer,some difficulties and prospects related to drag-free control of Chinese future gravitational gradiometry satellite are discussed in depth.