基于区域极点配置的挠性卫星姿态镇定控制  

Flexible Satellite Attitude Stabilization Control Based on Regional Pole Assignment

作　　者：郑丹凤[1] 周燕茹[1] 曾建平[1] 

机构地区：[1]厦门大学航空航天学院,福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2016年第3期376-381,共6页Journal of Xiamen University：Natural Science

基　　金：国家自然科学基金(61374037);中央高校基本科研业务费专项(20720150177)

摘　　要：针对挠性卫星姿态系统,研究了基于区域极点配置的姿态镇定控制问题.通过对姿态系统进行近似线性化处理,并应用线性矩阵不等式(LMI)技术给出一种基于降维观测器的状态反馈控制方法.该方法根据分离原理,分别采用区域极点配置和极点配置定理设计控制器和观测器.对某挠性卫星模型进行数值仿真,并与一种非线性控制方法做比较研究.仿真结果表明该方法兼顾了卫星姿态系统的动态和稳态性能,且在小角度姿态镇定控制上具有显著优势.Based on regional-pole assignment, the attitude stabilization control problem is studied for the flexible satellite-attitude system.Through the approximate linearization of the attitude system and linear matrix inequality （LMI） technique, a state feedback control approach based on the reduced-order observer is provided.According to the separation principle, the controller and the observ- er are obtained by regional pole assignment and theorem of pole assignment, respectively.Finally, the method is validated over the nonlinear model of a flexible satellite.Simulation results show that, compared with a nonlinear control approach, the proposed method guarantees both dynamic and steady state performances of the satellite attitude system. Furthermore, the method enjoys significant advantages in small angle attitude stabilization control.

关 键 词：挠性卫星 姿态控制 区域极点配置 观测器 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计]