摘要
针对多约束的高超声速滑翔飞行器的再入轨迹优化时对初值敏感的问题,提出一种参考轨迹快速规划算法。对运动方程进行了无量纲处理并引入适合优化求解的替代变量,通过纵向再入走廊和侧向制导的规划使所有过程约束和终端约束完全满足。仿真结果表明,得到的参考轨迹接近最优解,大幅缩短了后续优化工作所需的时间,具有重要的工程实用价值。
According to sensitivity to initial value in reentry trajectory optimization for hypersonic glide vehicles with multiconstraints, this paper develops a rapid reference trajectory planning methodology. Equations of motion are normalized and an independent variable is introduced for optimization. A combined programming of longitude reentry corridor and lateral guidance is proposed to satisfy all process constraints and constraints perfectly. Successful results show that the obtained reference trajectory approaches the best trajectory and the cost time of optimization is obviously shortened. The methodology is rational, effective and easy for implementation.
出处
《计算技术与自动化》
2009年第1期88-91,共4页
Computing Technology and Automation
基金
国家自然科学基金资助(60674105)
关键词
高超声速飞行器
再入制导
参考轨迹
多约束
快速规划
hypersonic vehicles
reentry guidance
reference trajectory
multi-constraints
rapid programming
