姿态变化一致有界的姿态稳定控制器设计  

Attitude stability controller design under attitude uniformly bounded

作　　者：殷春武[1] 侯明善[1] 李明翔[1] 

机构地区：[1]西北工业大学自动化学院,西安710129

出　　处：《控制与决策》2016年第8期1493-1498,共6页Control and Decision

摘　　要：针对航天器姿态稳定控制问题,设计一种迭代学习姿态控制器.将连续非周期运动的姿态跟踪过程分解为队列重复运动,采用前一周期的姿态跟踪误差修正后一周期的控制输入,分别对未知参数和干扰构建有界迭代学习律,给出航天器姿态稳定控制器,并从理论上分析了闭环系统的渐近稳定性和姿态跟踪误差的一致有界性.通过在轨捕获非合作目标过程中航天器姿态跟踪控制问题的数值仿真,验证了迭代学习控制器的鲁棒性和强抗干扰性.A barrier alignment iterative learning controller is designed for spacecraft attitude stability control with both unbounded perturbation of moment of inertia and external disturbance. Under the condition that the expected attitude is const,the non-repetitive attitude tracking process is decomposed into periodic, continuous state alignment repetitive process, and a barrier alignment iterative learning controller is designed to guarantee the attitude stabilization. For the physical actuators saturation limiting, a barrier projection is utilized to estimate the unknown moment of inertia and external disturbance, and the asymptotic stability of the closed-loop system and the boundness of the attitude tracking error are analyzed. The simulation results show that the controller has the advantages of simple structure, strong robustness and bound attitude tracking error.

关 键 词：姿态控制 迭代学习 障碍李雅普诺夫函数 在轨捕获 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计] TP273[自动化与计算机技术—检测技术与自动化装置]