平均地磁控制器的研究  

Three-axis attitude stabilization with averaging magnetic controller

作　　者：黄琳[1] 荆武兴[1] 

机构地区：[1]哈尔滨工业大学航天工程系,哈尔滨150001

出　　处：《哈尔滨工业大学学报》2007年第1期24-27,共4页Journal of Harbin Institute of Technology

摘　　要：针对小卫星单独利用三轴磁力矩器控制姿态可能出现失控的情况,研究了偏置动量轮与三轴磁力矩器组合控制的方案.其中,动量轮提供常值的俯仰轴偏置动量,并与依据轨道平均法设计产生的磁控力矩一起完成三轴对地定向的任务.通过在高、中、低倾角轨道上的大量仿真,表明这一方案在各种轨道上都能取得较好的控制效果,即便在几种磁力矩器故障情况下也能很好地稳定住卫星姿态.This paper mainly investigates a new active magnetic controller for small near-Earth-pointing satellites. In some real tests the three-axis magnetorquer only failed to keep the satellites in the pointing attitude, thus a biased momentum wheel is proposed to support the magnetorquer. Since the biased momentum wheel keeps a constant rate, the attitude controller is reduced to a simple active magnetic stabilization law during the normal stage. The control parameters designed by using a so-called orbit-averaged magnetic control have been tested on several typical orbits in the simulation part. The results show that the attitude control system performs considerably well in many cases, even though the pitch magnetorquer breaks down on a low inclination orbit, or the roll/yaw magnetorquer fails to work on a medial （or high） inclination orbit.

关 键 词：偏置动量轮 三轴磁力矩器 轨道平均 小卫星 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]