摘要
建立了临近空间飞行器无动力飞行理想运动模型及阵风干扰作用运动模型;通过共轭梯度优化算法设计了飞行器基于多约束条件的最优轨迹;利用基于线性状态调节器(RQL)制导方法实现阵风干扰作用下纵向与侧向参考轨迹的同时跟踪。仿真结果表明,本文的轨迹优化算法能在很短的时间内优化出最优轨迹且具有很好的收敛性;采用的制导算法能实现各种强度阵风干扰作用下的轨迹跟踪,具有很强的鲁棒性。
The ideal dynamics model and the dynamics model with wind disturbances were described in this thesis. Optimal trajectory with multi-constrains was designed by the conjugate gradient method. The Vertical and lateral trajectory with wind disturbances was tracked by the Linear state regulator（RQL） method. Simulation results show that the optimized algorithm can optimze the optimal trajectory in a short period time with a good convergence. The results also show that the trajectory can be tracked well by the guidance algorithm with all kinds of wind disturbances and the guidance algorithm is very rubost.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2008年第5期1485-1491,共7页
Journal of Astronautics
关键词
临近空间
轨迹优化
共轭梯度法
RQL
Near space
Trajectory optimization
Conjugate gradient method
RQL
