Command filtered integrated estimation guidance and control for strapdown missiles with circular field of view  

作　　者：Wei Wang Jiaqi Liu Shiyao Lin Baokui Geng Zhongjiao Shi 

机构地区：[1]School of Aerospace Engineering,Beijing Institute of Technology,Beijing 10081,China [2]China Research and Development Academy of Machinery Equipment,Beijing 100089,China [3]Northwest Industries Group CO.,Ltd.,Xi'an 710043,China

出　　处：《Defence Technology（防务技术）》2024年第5期211-221,共11页Defence Technology

摘　　要：In this paper,an integrated estimation guidance and control(IEGC)system is designed based on the command filtered backstepping approach for circular field-of-view(FOV)strapdown missiles.The threedimensional integrated estimation guidance and control nonlinear model with limited actuator deflection angle is established considering the seeker's FOV constraint.The boundary time-varying integral barrier Lyapunov function(IBLF)is employed in backstepping design to constrain the body line-of-sight(BLOS)in IEGC system to fit a circular FOV.Then,the nonlinear adaptive controller is designed to estimate the changing aerodynamic parameters.The generalized extended state observer(GESO)is designed to estimate the acceleration of the maneuvering targets and the unmatched time-varying disturbances for improving tracking accuracy.Furthermore,the command filters are used to solve the"differential expansion"problem during the backstepping design.The Lyapunov theory is used to prove the stability of the overall closed-loop IEGC system.Finally,the simulation results validate the integrated system's effectiveness,achieving high accuracy strikes against maneuvering targets.

关 键 词：Integrated estimation guidance and control Circular field-of-view Time-varying integral barrier Lyapunov function Command filtered backstepping control Nonlinear adaptive control Extended state observer 

分 类 号：TJ765[兵器科学与技术—武器系统与运用工程]