基于自适应小波RBF神经网络的导引头陀螺误差校正方法  

A method for gyroscopic error correction of guidance head based on adaptive wavelet RBF neural network

作　　者：刘建旭 雷昊 赵晟 刘会文 李少毅[3] LIU Jianxu;LEI Hao;ZHAO Sheng;LIU Huiwen;LI Shaoyi(Shanghai Aerospace Control Technology Research Institute,Shanghai 200093,China;Aerospace Academy,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Aerospace Academy,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]上海航天控制技术研究所,上海200093 [2]南京航空航天大学航天学院,南京210016 [3]西北工业大学航天学院,西安710072

出　　处：《中国惯性技术学报》2025年第1期76-81,88,共7页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金(62273279)。

摘　　要：凝视成像红外导引导弹发射冲击和飞行过程中,导引头MEMS陀螺输出会产生较大误差,造成成像系统稳定性降低,误差过大时会丢失目标。针对这一工程问题,提出一种基于自适应小波RBF神经网络的导引头陀螺误差校正方法。首先运用Allan方差分析导弹飞行全过程中,导引头伺服系统MEMS陀螺主要误差源及误差量级。然后运用小波阈值去噪法滤除高频噪声,作为训练网络输入。最后运用自适应小波RBF神经网络算法进行误差校正。实验结果表明,与传统RBF网络和Kalman滤波算法相比,所提算法均方根误差RMSE要低两个数量级,Allan方差也比传统算法减小一半,数据复杂度低,具备工程应用价值。During launch impact and flight process of staring imaging infrared guided missile,the output of MEMS gyroscopes in infrared seekers will produce significant error,which will reduce the stability of the imaging system.When the error is too large,the target may be lost.A gyroscope error correction method based on adaptive wavelet RBF neural network is proposed for the engineering problem.Firstly,Allan variance analysis is used to analyze the main error sources and magnitude of MEMS gyroscopes in the guidance head servo system during the entire missile flight process.Then,the wavelet threshold denoising method is used to filter out high-frequency noise as input for training the network.Finally,the adaptive wavelet RBF neural network algorithm is used for error correction.The experimental results show that compared with traditional RBF networks and Kalman filtering algorithms,the root mean square error(RMSE)of the proposed algorithm is two orders of magnitude lower,and the Allan variance analysis error level analysis results are also reduced by half compared to traditional algorithms.The data complexity is low,and it has engineering application value.

关 键 词：红外导引头 陀螺伺服系统 小波阈值去噪 小波RBF网络 

分 类 号：V249.1[航空宇航科学与技术—飞行器设计]