考虑临近空间零控交班的指令修正中制导研究

发布时间：2018-05-27 01:12

本文选题：兵器科学与技术 + 飞行器设计　；参考：《兵工学报》2017年03期

【摘要】：针对临近空间高超声速目标防御问题,根据目标特性提出了空基巡航段防御方案。在此基础上考虑临近空间防御特点进行中末制导交班问题分析,提出交班点性能指标,并得出连接中末制导阶段的有效零控拦截交班区域(零控交班)。结合模型预测静态规划理论与防御飞行器中制导终端状态约束条件,推导了最优控制问题的解析算法并将其作为防御飞行器的指令修正制导律,针对不同任务情况进行了数值仿真。仿真结果表明,零控交班区域分析结果可满足终端小速度比交会条件。设计的中制导律在显著提高计算效率的同时满足零控交班约束,且经过Monte Carlo仿真表明对初值扰动具有较强的鲁棒性。
[Abstract]:Aiming at the problem of hypersonic target defense in near space, the defense scheme of space based cruise section is proposed according to the target characteristics. On this basis, considering the characteristics of near space defense, this paper analyzes the problem of intermediate terminal guidance shift, puts forward the performance index of the shift point, and obtains the effective zero control intercept shift area (zero control shift) which connects the middle and terminal guidance stage. Based on the model prediction static programming theory and the state constraint condition of the guidance terminal in the defense vehicle, an analytical algorithm for the optimal control problem is derived and used as the guidance law modified by the command of the defense vehicle. Numerical simulation is carried out for different tasks. The simulation results show that the analysis results of zero control shift region can meet the condition of terminal small speed ratio rendezvous. The designed midcourse guidance law can significantly improve the computational efficiency and satisfy the zero-control shift constraint. The Monte Carlo simulation shows that the proposed law is robust to the initial disturbance.
【作者单位】：北京理工大学宇航学院飞行器动力学与控制教育部重点实验室;北京宇航系统工程研究所;
【基金】：国家自然科学基金项目(11572036)
【分类号】：TJ765.3

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