基于切变流形函数和模糊控制的微小卫星姿态磁控制  

Magnetic Attitude Control Basing on the Sliding Mode Function and the Fuzzy Control for Microsatellite

作　　者：李太玉[1] 张育林[2] 

机构地区：[1]上海航天技术研究院,上海200233 [2]酒泉卫星发射中心,甘肃酒泉732750

出　　处：《上海航天》2006年第2期1-5,共5页Aerospace Shanghai

摘　　要：研究了一种用李亚普诺夫方法和模糊控制理论实现微小卫星姿态磁控制的方法。通过构造李亚普诺夫函数给出切变流形函数,获得了一开关控制,并从理论上证明了系统的收敛性。用模糊控制法消除常规开关控制固有的抖振,给出了模糊控制律。理论分析和仿真结果表明,该姿态磁控制方法简单、姿态精度高、鲁棒性强,可用于微小卫星的姿态磁控制。A magnetic attitude control law for microsatellite was studied using Lyapunov function and fuzzy control in this paper. The sliding module function was educed through constructing a Lyapunov function that gave a sliding function, and a switch control was gained. The convergence of the system was proved. The sliding module vibration of the switch control was eliminated using fuzzy control, and the fuzzy control law was given. The theoretical analysis and simulation results showed that the law was simple, which had advantages of high attitude precision and good robustness. The law could be used in the magnetic attitude control for microsatelhe.

关 键 词：微小卫星 姿态控制 磁力矩器 李亚普诺夫方法 模糊控制 抖振 

分 类 号：V448.221[航空宇航科学与技术—飞行器设计]