| 基于间接伴随法的大气层内高超声速飞行器最优上升轨迹研究 |
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| 引用本文： | 佘智勇,马广富,沈作军.基于间接伴随法的大气层内高超声速飞行器最优上升轨迹研究[J].宇航学报,2010,31(8). |
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| 作者姓名： | 佘智勇 马广富 沈作军 |
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| 作者单位： | 1. 哈尔滨工业大学航天学院,哈尔滨,150001
2. 北京航空航天大学,北京,100191 |
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| 摘 要： | 利用修正的无量纲因子,建立了适用于大气层内高速飞行器数值优化的数学模型。创新地采用欧氏空间中超立方体顶点坐标作为协状态初始值的方法解决了伴随方法的初始值估计难题,实现了间接伴随法在最优轨迹优化中的应用。完成并给出了该方法在真空状态和有空气动力存在的情况下轨迹优化结果,并在控制约束存在的前提下,对上升段轨线进行重规划,仿真结果表明,该方法快速、有效,且具有在线制导的应用潜力。
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| 关 键 词： | 伴随法 初值估计 轨迹线性化 大气层内 上升段轨迹优化 |
Indirect Adjoint Method-Based Endoatmospheric Ascent Trajectory Optimization for Hypersonic Vehicle |
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| SHE Zhi-yong,MA Guang-fu,SHEN Zuo-jun.Indirect Adjoint Method-Based Endoatmospheric Ascent Trajectory Optimization for Hypersonic Vehicle[J].Journal of Astronautics,2010,31(8). |
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| Authors: | SHE Zhi-yong MA Guang-fu SHEN Zuo-jun |
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| Institution: | SHE Zhi-yong1,MA Guang-fu1,SHEN Zuo-jun2(1.School of Astronautics,Harbin Institute of Technology,Harbin 150001,China,2.Bejing University of Aeronautics & Astronautics,Beijing 100191,China) |
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| Abstract: | Modified non-dimensional factors are used to derive a dynamic model of endoatmospheric hypersonic vehicles suitable for numerical optimization.Indirect adjoint method is applied for solving the two point boundary value problem of endoatmospheric ascent trajectory optimization.A method for initial value estimation is proposed and a vacuum solution is obtained first.Then the aerodynamic effects are introduced gradually and a convergence solution with control constraints is reached..Simulation results are pres... |
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| Keywords: | Adjoint method Initial value estimation Trajectory linearization Endoatmospheric Ascent trajectory optimization |
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