现代防御技术 ›› 2023, Vol. 51 ›› Issue (5): 67-76.DOI: 10.3969/j.issn.1009-086x.2023.05.009

• 导航、制导与控制 • 上一篇    下一篇

一种有视线角约束的模糊变系数变结构制导律

敦晓彪1, 张新博1, 尹童1, 蔡婧竹2, 李宏宇1, 于成龙1, 宿敬亚1   

  1. 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
  • 收稿日期:2022-09-22 修回日期:2022-12-03 出版日期:2023-10-28 发布日期:2023-11-02
  • 作者简介:敦晓彪(1989-),男,河北石家庄人。工程师,博士,主要研究方向为飞行器总体设计及制导控制。

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

Xiaobiao DUN1, Xinbo ZHANG1, Tong YIN1, Jingzhu CAI2, Hongyu LI1, Chenglong YU1, Jingya XIU1   

  1. 1.Beijing Institute of Electronic System Engineering, Beijing 100854, China
    2.China jiuyuan Hi-tech Equipment Corporation. Ltd, Beijing 100094, China
  • Received:2022-09-22 Revised:2022-12-03 Online:2023-10-28 Published:2023-11-02

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。

关键词: 变结构, 模糊控制, 制导律, 高速机动, 视线角约束

Abstract:

A fuzzy variable coefficient variable structure guidance law is designed for intercepting high-speed 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.

Key words: variable structure, fuzzy control, guidance law, high-speed maneuvering, line-of-sight angle constraint

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