长征五号运载火箭在线调姿规划方法  

Online Attitude Adjustment Planning Method for New Generation Large Launch Vehicle Long March 5

作　　者：张宇[1] 黄聪 李学锋[1] 王辉[1] 刘畅 Zhang Yu;Huang Cong;Li Xue-feng;Wang Hui;Liu Chang(Beijing Aerospace Automatic Control Institute,Beijing,100854)

机构地区：[1]北京航天自动控制研究所,北京100854

出　　处：《导弹与航天运载技术》2021年第3期22-25,共4页Missiles and Space Vehicles

摘　　要：长征五号火箭末级飞行段采用迭代制导控制方式,程序角在线规划生成,终端程序角不再是标准弹道程序角。由于迭代制导程序角终端值不固定,传统火箭使用的转动固定角度的调姿方式不能适用,因此调姿段需要采用在线规划的调姿方式。提出"三通道程序角在线调姿规划"和"程序四元数在线调姿规划"两种在线调姿规划方法,分别对三通道程序角和程序四元数进行在线实时规划,实现了起始姿态不确定、终端姿态确定情况下的火箭调姿。The final flight stage of the new-generation large launch vehicle long march 5 adopts the iterative guidance control method,and the program angle is generated online,and the terminal program angle is no longer the standard trajectory program angle.Because the angle terminal value of the iterative guidance program is not fixed,the attitude adjustment mode of fixed rotation angle used by the traditional rocket is not applicable.Therefore,the attitude adjustment mode of online planning is needed in the attitude adjustment section.In this paper,two online attitude planning methods,"three-channel program Angle online attitude planning"and"program quaternion online attitude planning",are proposed to carry out online real-time planning for three-channel program Angle and program quaternion,respectively,to realize the rocket attitude alignment under the condition of uncertain initial attitude and certain terminal attitude.

关 键 词：运载火箭 在线调姿规划 四元数调姿规划 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计]