首页 | 本学科首页   官方微博 | 高级检索  
     

火箭垂直回收着陆段在线制导凸优化方法
引用本文:张志国,马英,耿光有,余梦伦.火箭垂直回收着陆段在线制导凸优化方法[J].弹道学报,2017,29(1).
作者姓名:张志国  马英  耿光有  余梦伦
作者单位:北京宇航系统工程研究所,北京,100076
摘    要:为了研究火箭垂直回收着陆段的制导律设计问题,通过求解最省燃料问题获得制导律,将连续优化问题转化为一类二阶锥凸优化问题(SOCP)。采用凸优化问题求解程序,实时计算最优轨迹获得当前制导周期内的制导律,导引火箭飞向目标点并垂直软着陆。该方法对着陆段初始状态偏差和下降过程中气动扰动有较强的适应性。进行了3个算例的仿真,结果表明:凸优化方法具有确定的收敛性质,相较于Radau伪谱法求解更加高效;参数设置简单,能够满足实时制导需求,具有在线应用的潜力。

关 键 词:火箭回收  垂直着陆  在线制导  凸优化

Convex Optimization Method Used in the Landing-phaseOn-line Guidance of Rocket Vertical Recovery
ZHANG Zhi-guo,MA Ying,GENG Guang-you,YU Meng-lun.Convex Optimization Method Used in the Landing-phaseOn-line Guidance of Rocket Vertical Recovery[J].Journal of Ballistics,2017,29(1).
Authors:ZHANG Zhi-guo  MA Ying  GENG Guang-you  YU Meng-lun
Abstract:To study the guidance law for vertical-recovery landing phase of rocket,the guidance law was obtained by solving the problem of saving most fuel.The continuous optimization problem was transformed into a second-order cone program(SOCP)convex optimization problem.During each guidance-period,the guidance law was obtained by calculating the optimal trajectory to guide the rocket to the preassigned target and achieve vertical soft landing.The method has strong adaptability to the initial state variables deviation and aerodynamic disturbance during descending.The simulation of three examples was carried out.The results show that the convex optimization method has deterministic convergence properties,and it is an efficient solving method compared with Radau pseudo-spectrum method.The setting of parameters by the method is easy,and it meets real-time guidance requirement and can be implemented for on-line application.
Keywords:rocket recovery  vertical landing  on-line guidance  convex optimization
本文献已被 CNKI 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号