多约束条件下高超声速滑翔飞行器轨迹优化  

Trajectory Optimization for Hypersonic Glide Vehicle with Multi-Constraints

作　　者：谢愈[1] 刘鲁华[1] 汤国建[1] 郑伟[1] 

机构地区：[1]国防科学技术大学航天与材料工程学院,长沙410073

出　　处：《宇航学报》2011年第12期2499-2504,共6页Journal of Astronautics

摘　　要：研究了考虑航路点、禁飞区、热流、动压、过载、控制量以及终端状态等多种约束条件下高超声速滑翔飞行器轨迹优化设计问题。分析了采用一般Gauss伪谱方法进行高超声速滑翔飞行器轨迹优化设计存在的主要问题,为此,提出了轨迹分段优化策略,将轨迹优化的一般最优控制问题转换为多段最优控制问题,进而将各段轨迹按Gauss伪谱方法进行离散化,将连续多段最优控制问题转换为非线性规划问题进行求解。以多约束条件下最大射程轨迹优化为例进行仿真分析,结果表明分段优化方法能够较快地设计出满足各种约束条件的优化轨迹。A trajectory optimization approach for hypersonic glide vehicle with muhi-constraints including waypoint, no-fly zone, heating rate, dynamic pressure, overload, controls, and terminal states is studied in this paper. The main problems about application of Gauss Pseudospectral Method （GPM） in trajectory optimization for hypersonic glide vehicle are discussed, and a multi-phase trajectory optimization strategy is proposed to solve the problems. According to the strategy, the general optimal control problem of trajectory optimization can be transformed into a multi-phase optimal control problem, and then the GPM is used to discretize each phase of trajectory, so the continuous multi-phase optimal control problem is transcribed into a nonlinear programming problem to be solved. Taking the maximum downrange trajectory optimization as an example, the simulations indicate that the multi-phase strategy is adaptable to trajectory optimization for the hypersonic glide vehicle with multi-constraints.

关 键 词：高超声速滑翔飞行器 分段轨迹优化 多约束条件 禁飞区 航路点 GAUSS伪谱法 

分 类 号：V412[航空宇航科学与技术—航空宇航推进理论与工程]