无陀螺磁控小卫星的大角度姿态捕获研究  

Active Magnetic Attitude Control of Microsatellite Without Gyroscope

作　　者：陈宏宇[1] 

机构地区：[1]上海微小卫星工程中心,上海200050

出　　处：《航天控制》2006年第3期43-47,53,共6页Aerospace Control

基　　金：中科院知识创新工程项目(KGCX1-Y-03)"存储转发通信小卫星系统"

摘　　要：为了解决无陀螺磁控小卫星的姿态稳定和捕获问题,本文针对偏置稳定的主动磁控小卫星姿态控制平台,基于磁控力矩的时间累积作用效果等效卫星角动量增量的规律,设计了一种仅利用角度反馈的卫星大角度磁捕获控制律。通过仿真和卫星在轨实测的验证,证明该方法具有良好的收敛效果和鲁棒性,工程实现简单,可靠性高,适用于中低轨道的通信小卫星。A new approach to three-axis attitude control of microsatellite without gyro, using magnetic torque bars and bias-momentum wheel is described in detail. On the basis of the fact that the impulsive moment of magnetic control moment is equal to the increment of angular momentum, a new control strategy for attitude acquisition is given. The stability, accuracy and speediness of this system are verified by mathematic simulation and on-orbit flight. Simplicity and efficiency ensure that the controller is suitable for LEO magnetic control microsatellite.

关 键 词：微小卫星 主动磁控 角度反馈 姿态捕获 

分 类 号：V412.42[航空宇航科学与技术—航空宇航推进理论与工程]