基于H-V规划的多约束再入滑翔制导方法  

Reentry Glider Guidance Research with Multi-constrain Based on H-V Planning Method

作　　者：秦晓田 林海[1] 王晓芳[1] Qin Xiaotian;Lin Hai;Wang Xiaofang(School of Aerospace and Engineering, Beijing Institute of Technology, Beijing 100081)

机构地区：[1]北京理工大学宇航学院,北京100081

出　　处：《战术导弹技术》2018年第3期67-73,共7页Tactical Missile Technology

基　　金：国家自然科学基金资助项目(11502019)

摘　　要：针对助推-滑翔超高速飞行器再入滑翔段轨迹设计问题,考虑热流密度、动压、过载、准平衡滑翔等多种约束的前提下,生成再入走廊。在给定滑翔段初始速度及末端速度和高度的前提下,设计了一种由滑翔段初始高度唯一确定的滑翔段H-V轨迹,基于反馈线性化推导得到实现此轨迹的侧倾角指令。同时,考虑满足再入走廊约束和侧倾角不出现奇异的要求,采用逐步计算的方法获得滑翔段初始高度的可行域,并将其作为再入初始段轨迹设计的终端约束。通过初始段设计得到某一确定可行的滑翔段初始高度,进而得到滑翔段的确定H-V轨迹和侧倾角指令。仿真结果表明,再入滑翔段H-V轨迹制导方法,既能够满足多种过程约束,又能避免侧倾角奇异的现象,实现参考轨迹快速生成与精确跟踪。Aiming at the trajectory design problem of the reentry section of the booster-gliding super high speed vehicle,considering the heat flux density,dynamic pressure,overload,quasi balanced gliding and so on,generating the reentry corridor. A glide section H-V trajectory is uniquely determined by the initial height of the gliding section under the premise of the given initial velocity,the end velocity and height,deriving the roll angle command to realize the trajectory. Considering the requirement that satisfying the restraint of reentry corridor and avoiding singularity for the roll angle,the method of stepwise calculation to obtain the feasible area of the initial height of the gliding section is used,which is also used it as the terminal constraint of the reentry initial stage trajectory design. A certain initial height of the feasible gliding section is obtained by the initial section design,and then the H-V trajectory and the roll angle command are obtained. The simulation results verify the effectiveness of the proposed method.

关 键 词：助推滑翔 再入走廊 H-V轨迹 滑翔初始高度 

分 类 号：V448.235[航空宇航科学与技术—飞行器设计]