摘要
利用线性协方差分析法对航天器在闭环控制作用下轨道机动的精度问题进行了研究。首先,分析了存在的主要误差,给出了误差影响下航天器轨道机动闭环控制的系统框图。然后建立了开环和闭环控制系统协方差分析的数学模型,并根据轨道方程线性化给出了脉冲速度修正算法。对赤道大椭圆轨道卫星开环和闭环控制下轨道机动的精度问题进行了分析,与Monte Carlo仿真结果与一致,校验了方法的有效性与正确性。
Orbital maneuver accuracy analysis problem is studied by using linear covariance analysis techniques in this paper. Firstly, the main existing errors are analyzed and a closed-loop control system for orbit maneuver is established. Then, the models and equations for linear eovariance orbit maneuver problem under both open-loop and closed-loop controls are developed respectively. And correction algorithm is presented based on orbit motion equation linearization. At last, the terminal state accuracies of high eccentric orbit maneuver under both open-loop and closed-loop controls is analyzed. And the validity of the results derived from linear covariance techniques is proved by using Monte Carlo simulations.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2014年第9期1015-1021,共7页
Journal of Astronautics
关键词
轨道机动
线性协方差分析法
精度
闭环控制
Orbital maneuver
Linear covariance analysis technique
Accuracy
Closed-Loop control
