摘要
基于解耦变结构控制对静止轨道气象卫星扫描镜运动对卫星姿态的影响进行了研究,根据星上有效载荷的扫描镜与星体耦合特性,设计了一种解耦变结构控制律,控制律直接对4个四元数设计滑动模态方程以避免奇异问题。数学仿真结果表明:该变结构控制率能减小扫描镜运动对卫星姿态的影响,提高卫星平台的稳定度,进而提高有效载荷的成像质量。
The influence of the motion of scanning camera on the spacecraft＇ s attitude was studied based on variable structure control in this paper. According to the coupling character between the camera and satellite, a decoupling variable structure control law was designed, which directly treated the four quaternion sliding surfaces to avoid calculating singularity. The simulation results showed that this variable structure control law could minimize the influence of spacecraft＇s attitude, and improve the platform stability of the satellite and image quality.
出处
《上海航天》
2012年第6期7-10,15,共5页
Aerospace Shanghai
关键词
扫描镜
四元数
变结构控制
成像仪
垂直探测仪
Scanning camera
Quaternion
Variable structure contron
Imager
Sounder
