摘要
运载火箭在发射场受阵风干扰存在线晃动和角晃动,造成初始对准精度下降,传统的比力单积分抗晃动算法在规定时间内无法快速收敛,得到的航向对准精度具有不确定性。针对该问题提出了基于QUEST比力双积分的抗晃动对准方法。首先使用姿态分解的方法,对比力信息进行双重积分,得到不同参考系下的位置信息,通过QUEST方法,实现姿态矩阵的求解。通过摇摆台试验,采集在不同晃动条件下的惯导信息,实验结果表明,该算法能够克服比力单积分算法存在的航向不确定性,使得航向姿态能够快速收敛,有效减小晃动条件对对准精度的影响,提高运载火箭的环境适应性。
The launch vehicle is disturbed by wind gusts at the launch site and there are line wobble and angular wobble,which cause the initial alignment accuracy to be degraded.The traditional ratio single integral anti-wobble algorithm cannot converge quickly within the specified time and obtains the heading alignment accuracy with uncertainty,to address this problem,this paper proposes a QUEST-based ratio double integral anti-wobble alignment method.First,the attitude decomposition method is used to double integrate the specific force information to obtain the position information under different reference systems,and the attitude matrix is solved by the QUEST method.The experimental results show that the algorithm can overcome the heading uncertainty of the single integration of the specific force,make the heading attitude converge quickly,effectively reduce the alignment results under the influence of wobble,and improve the environmental adaptability of the launch vehicle.
作者
卢彤春
李豫龙
吴唯余
曹琰祥
周玮炯
LU Tongchun;LI Yulong;WU Weiyu;CAO Yanxiang;ZHOU Weijiong(Shanghai Aerospace Control Technology Institute,Shanghai 201109;Shanghai Engineering Research Center of Inertia,Shanghai 201109)
出处
《飞控与探测》
2024年第3期40-46,共7页
Flight Control & Detection
关键词
初始对准
惯性系
抗晃动
比力双积分
QUEST算法
initial alignment
inertial system
anti-sway
specific force double integration
QUEST algorithm
