地空导弹的新型非奇异终端滑模导引律  

A New Non-singular Terminal Sliding Mode Guidance Law for Surface-to-Air Missile

作　　者：崔玺 戴娟[1,2,3] 范存礼 苏中 刘洪 朱翠[4] CUI Xi;DAI Juan;FAN Cunli;SU Zhong;LIU Hong;ZHU Cui(Beijing Key Laboratory of High Dynamic Navigation Technology,Beijing 100192,China;Key Laboratory of Modern Measurement and Control Technology,Ministry of Education,Beijing 100192,China;Beijing Information Science&Technological University,School of Automation,Beijing 100192,China;Beijing Information Science&Technological University,School of Information and Communication Engineering,Beijing 100101,China)

机构地区：[1]高动态导航技术北京市重点实验室,北京100192 [2]现代测控技术教育部重点实验室,北京100192 [3]北京信息科技大学自动化学院,北京100192 [4]北京信息科技大学信息与通信工程学院,北京100101

出　　处：《电光与控制》2021年第1期37-40,70,共5页Electronics Optics & Control

基　　金：国家自然科学基金(61703040,61603047);北京市教育委员会科技计划一般项目(71E1810971);高动态导航技术北京市重点实验室(HDN2019001);北京信息科技大学师资补充与支持计划(2019-2021)(5029011103);北京信息科技大学科研水平提高重点研究培育项目(2019KYNH225);北京理工大学智能机器人与系统高精尖创新中心资助(2016IRS22)。

摘　　要：针对导弹拦截机动目标有限时间约束问题,在末端制导阶段,考虑自动驾驶仪动态延迟特性建立弹目拦截系统数学模型,对于传统终端滑模导引律存在的奇异问题导致的导弹制导稳定性差等问题,提出了基于改进的扩张状态观测器的新型非奇异终端滑模导引律。该方法能够确保视线(LOS)角速率在有限时间内收敛到零,且在平衡点处快速收敛;为了避免传统的扩张状态观测器(ESO)导致的曲线非光滑情况,通过改进扩张状态观测器准确估计外部扰动,并对系统进行状态补偿。设计地空导弹模型进行仿真验证,结果表明,该方法不但缩短了系统收敛时间,还提高了地空导弹制导精度。To solve the problem of finite-time constraints when the missile intercepts a maneuvering target in the terminal guidance stage,the mathematical model of the target interception system is established considering the dynamic delay of the autopilot.To solve the problem of poor guidance stability caused by the singularity of the traditional terminal sliding mode guidance law,a new non-singular terminal sliding mode guidance law based on the improved Extended State Observer(ESO) is proposed.This method ensures that the Line-of-Sight(LOS) angular rate converges to zero in a finite time and converges quickly at the equilibrium point.In order to avoid curve chatter caused by the traditional ESO,an improved ESO is adopted to accurately estimate external disturbances and compensate for the system’s state.A model of the surface-to-air missile is designed for simulation verification.The simulation results show that this method not only shortens the system’s convergence,but also improves the guidance precision of the surface-to-air missile.

关 键 词：非奇异终端滑模 扩张状态观测器 自动驾驶仪 导引律 

分 类 号：V448.133[航空宇航科学与技术—飞行器设计] TJ765[兵器科学与技术—武器系统与运用工程]