一种抗机翼挠曲变形的速度+姿态匹配快速对准算法  

An Anti-Wing Flexure Velocity+Attitude Matching Rapid Transfer Alignment Algorithm

作　　者：程海彬[1,2] 鲁浩 王进达[1] Cheng Haibin;Lu Hao;Wang Jinda(China Airborne Missile Academy,Luoyang 471009,China;Aviation Key Laboratory of Science and Technology on Airborne Guided Weapons,Luoyang 471009,China)

机构地区：[1]中国空空导弹研究院,河南洛阳471009 [2]航空制导武器航空科技重点实验室,河南洛阳471009

出　　处：《航空兵器》2021年第1期45-49,共5页Aero Weaponry

基　　金：航空科学基金项目(20170112002)。

摘　　要：为了提高机载导弹捷联惯导在强扰动下传递对准的速度与精度,设计了一种可以适应飞行时机翼、武器挂架等环节存在较强挠曲变形和振动环境的快速传递对准算法,给出了速度+姿态匹配对准算法误差方程与姿态匹配算法的观测方程。为了消除机翼挠曲变形与振动对算法产生的不利影响,采取将巴特沃斯低通滤波器引入传递对准算法中的新方法,有效增强了算法在恶劣飞行环境下的鲁棒性,提高了算法的滤波精度。对比仿真结果显示:在飞机摇翼机动激励下,即使存在较强的机翼挠曲干扰,失准角估计误差5 s内可以收敛到3′以内;新算法在不降低对准算法快速性与估计精度情况下,有效解决了速度+姿态匹配算法对机翼挠曲变形与振动敏感的问题。In order to improve the transfer alignment speed and accuracy of airborne missile strapdown inertial navigation system under strong interference,an improved rapid transfer alignment algorithm is designed,which can adapt to the strong flexure and vibration environment of the wings,wing pylons and so on under the actual flight conditions.The error equation of velocity+attitude matching alignment algorithm and the observation equation of attitude matching algorithm are given.In order to eliminate the adverse effects of wing flexure and vibration on the algorithm,the Butterworth low-pass filter is introduced into the field of transfer alignment.This method significantly enhances the robustness of the algorithm and improves the filter accuracy of the algorithm in the harsh vibration environment.Contrast simulation results show that even there is strong interference of wing flexure,the estimation error of misalignment angle can converge to 3′within 5 s under the excitation of the aircraft wing maneuver.The algorithm does not reduce the rapidity and the estimation accuracy of the transfer alignment,effectively solves the problem that the velocity+attitude matching algorithm is sensitive to the flexure and vibration of the wing.

关 键 词：捷联惯导 传递对准 挠曲变形 低通滤波 制导 战术导弹 

分 类 号：TJ765.3[兵器科学与技术—武器系统与运用工程]