上海航天
上海航天
상해항천
AEROSPACE SHANGHAI
2012年
6期
7-10,15
,共5页
扫描镜%四元数%变结构控制%成像仪%垂直探测仪
掃描鏡%四元數%變結構控製%成像儀%垂直探測儀
소묘경%사원수%변결구공제%성상의%수직탐측의
Scanning camera%Quaternion%Variable structure contron%Imager%Sounder
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。
基于解耦變結構控製對靜止軌道氣象衛星掃描鏡運動對衛星姿態的影響進行瞭研究，根據星上有效載荷的掃描鏡與星體耦閤特性，設計瞭一種解耦變結構控製律，控製律直接對4箇四元數設計滑動模態方程以避免奇異問題。數學倣真結果錶明：該變結構控製率能減小掃描鏡運動對衛星姿態的影響，提高衛星平檯的穩定度，進而提高有效載荷的成像質量。
기우해우변결구공제대정지궤도기상위성소묘경운동대위성자태적영향진행료연구，근거성상유효재하적소묘경여성체우합특성，설계료일충해우변결구공제률，공제률직접대4개사원수설계활동모태방정이피면기이문제。수학방진결과표명：해변결구공제솔능감소소묘경운동대위성자태적영향，제고위성평태적은정도，진이제고유효재하적성상질량。
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.
