高速再入飞行器跟踪制导方法对比研究
Comparative research on tracking guidance methods for high-speed reentry vehicles
张天佑 1陈万春 1周韬1
作者信息
- 1. 北京航空航天大学宇航学院,北京 102206;航天器设计优化与动态模拟技术教育部重点实验室,北京 100191
- 折叠
摘要
针对标准再入轨迹跟踪制导问题,比较研究如何选取控制方法.采用Radau伪谱法由标准迎角方案、过程约束和飞行任务性能指标优化得到标准再入轨迹;分别以LQR控制和滑模控制建立纵向轨迹跟踪制导的控制模型,采用倾侧角反转策略作为横向制导方法,得到两种轨迹跟踪制导控制器.仿真结果表明,基于考虑模型或参数不确定性滑模控制的轨迹跟踪制导控制器鲁棒性较好,模拟试验成功率较高.
Abstract
To solve the problem of standard reentry trajectory tracking guidance,comparison and study have been conducted on how to choose the control method.The standard reentry trajectory is obtained by using the Radau pseudo spectral method in accordance with the standard angle of attack scheme,process constraints and flight mission performance index.The control model of longitudinal trajectory tracking guidance is established by adopting LQR control and sliding mode control respec-tively.The tilt angle inversion strategy is employed as a lateral guidance method obtaining two traj-ectory tracking guidance controllers.The simulation results indicate that the trajectory tracking guid-ance controllers possess better robustness,which are developed based on sliding mode control with model or parameter uncertainty considered,resulting in higher success rate of simulation test.
关键词
再入制导/标准轨迹制导法/伪谱法Key words
reentry guidance/standard trajectory guidance method/pseudo spectral method引用本文复制引用
出版年
2024
NETL
NSTL
万方数据