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兵工学报  2015 

复杂约束条件下的再入轨迹迭代求解方法

DOI: 10.3969/j.issn.1000-1093.2015.06.008, PP. 1015-1023

Keywords: 航空、航天科学技术基础学科,轨迹优化,最优控制,禁飞区约束,再入,Gauss伪谱法

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Abstract:

?针对复杂非线性约束条件下,高超声速飞行器再入轨迹优化问题强非线性、多阶段、多约束的特点,提出了一种基于Gauss伪谱法的逐步添加约束的迭代求解方法。完善了规则形状禁飞区约束建模,提出更切实际的禁飞区模型以适应不同任务需求;提出逐步添加约束的迭代求解框架,该框架从解构复杂约束入手,由简至繁逐步添加约束并迭代求解逼近原复杂问题的解;以时间最短为优化目标,对考虑驻点热流密度、过载、动压和禁飞区等多约束的条件下的轨迹优化问题进行仿真计算。仿真结果验证了该算法的正确性、有效性和较好的鲁棒性。

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