摘要
针对纯磁控微小卫星姿态捕获问题,提出了一种基于姿态角和姿态角速度反馈的磁矩能量控制律。利用Matrosov定理证明了该控制律具有一致渐近稳定性,能够保证星体最终稳定到唯一的零轨道姿态角平衡位置。结合某在研低轨纳星,分析了气动力矩作用下星体大角度姿态捕获的纯磁控性能。仿真结果表明,所设计的能量控制律具有一致渐近稳定特性,考虑气动力矩影响时可在一个轨道周期内完成纳星姿态捕获,控制精度较高。该控制律具有较好的工程应用前景,对于低成本微小卫星的研制是一个有益的探索。
To satisfy the requirement for attitude acquisition of micro-satellite with only magnetic actuators,an energy control law for the magnetic moment based on the attitude angle feedback and the attitude angular feedback is developed.Matrosov＇s theorem is used to prove uniform global asymptotic stability（UGAS） of the equilibrium with only one equilibrium position for the developed controller.The control performance of a LEO nano-satellite under development in large angle attitude acquisition is analyzed,in consideration of the impact of aerodynamic drag torque.The mathematical simulation results validate feasibility and efficiency of the proposed control law.This energy control law for the magnetic moment has a good engineering application foreground and is a beneficial exploration for research and development of the low cost micro-satellite.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2011年第1期72-80,共9页
Journal of Astronautics
关键词
微小卫星
磁控
姿态捕获
能量控制
稳定性
Micro-satellite
Magnetic control
Attitude acquisition
Energy control
Stability
