一种有视线角约束的模糊变系数变结构制导律  

A Fuzzy Variable Coefficient Variable Structure Guidance Law with Terminal Line-of-Sight Angle Constraint

作　　者：敦晓彪 张新博 尹童 蔡婧竹 李宏宇 于成龙 宿敬亚 DUN Xiaobiao;ZHANG Xinbo;YIN Tong;CAI Jingzhu;LI Hongyu;YU Chenglong;XIU Jingya(Beijing Institute of Electronic System Engineering,Beijing 100854,China;China jiuyuan Hi-tech Equipment Corporation.Ltd,Beijing 100094,China)

机构地区：[1]北京电子工程总体研究所,北京100854 [2]中国久远高新技术装备公司,北京100094

出　　处：《现代防御技术》2023年第5期67-76,共10页Modern Defence Technology

摘　　要：针对有末端视线角约束下拦截高速机动目标的场景,设计了一种模糊变系数变结构制导律。提出了一种自适应变结构制导律,制导律可以根据弹目距离自适应调整趋近滑模面的速度;用饱和函数代替制导律中的开关项,有效消除了系统抖振。仿真表明,拦截高速非机动和高速机动目标,提出的变结构制导律均可以满足视线角约束和脱靶量要求,但需用过载较大。为解决需用过载较大的问题,引入模糊控制方法,设计模糊控制器对变结构制导律中的导引系数进行优化,得到了一种模糊变系数变结构制导律,可以满足视线角约束且有效抑制了系统的需用过载。A fuzzy variable coefficient variable structure guidance law is designed for intercepting highspeed maneuvering targets with terminal line-of-sight angle constraints.Firstly,an adaptive variable structure guidance law is proposed to adaptively adjust the velocity approaching the sliding mode surface according to the distance of the missile target.Then,the chattering is eliminated by replacing the switch term in guidance law with the saturation function.Simulation results show that the proposed guidance law can meet the requirements of line-of-sight angle constraint and miss distance for intercepting high-speed non-maneuvering and maneuvering targets,but it requires a large overload.To this end,a fuzzy control method is introduced and a fuzzy controller is designed to optimize the guidance coefficient in the variable structure guidance law.Finally,a fuzzy variable structure guidance law with a variable coefficient is obtained to satisfy the line-of-sight angle constraint and restrain the required system overload.

关 键 词：变结构 模糊控制 制导律 高速机动 视线角约束 

分 类 号：TJ765[兵器科学与技术—武器系统与运用工程]