静不稳定航弹弹道初始段姿态控制方法研究  

Research on attitude control method of statically unstable aerial bomb in initial trajectory section

作　　者：周航 孙传杰[1] 李永泽[1] 谭晓军[1] 陈伟[1] ZHOU Hang;SUN Chuanjie;LI Yongze;TAN Xiaojun;CHEN Wei(Institute of Systems Engineering,China Academy of Engineering Physics,Mianyang 621999,China)

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621999

出　　处：《兵器装备工程学报》2024年第11期259-266,共8页Journal of Ordnance Equipment Engineering

摘　　要：某种采用折叠弹翼结构的航空制导炸弹在弹射投放后延迟展开弹翼且弹翼展开前具有较大的静不稳定度。针对航弹静不稳定状态下的机弹分离安全问题和姿态控制问题,提出了一种基于改进扩张状态观测器补偿的非奇异终端滑模控制方法。该方法利用滑模控制的强鲁棒性应对机弹分离过程中的各种外界扰动和内部不确定性,为了抑制控制抖振,设计了一种时变带宽的改进扩张状态观测器对系统总不确定项进行估计,从而形成补偿控制信号以改善控制效果,并证明了控制系统的Lyapunov稳定性和有限时间收敛性。仿真结果表明:所设计的方法能够实现弹道初始段弹体姿态的快速稳定控制且具有较高的控制品质,保证了机弹分离的安全性,同时为中制导创造了良好的初始条件。An aviation guided bomb with folded wing structure delays the opening of the wing after ejection,and the bomb has a large static degree of unstable before the wing is deployed.A non-singular terminal sliding mode control method based on improved extended state observer compensation is proposed to solve the problem of aircraft-bomb separation safety and attitude control of aerial bomb in the static unstable state.This method uses the strong robustness of sliding mode control to deal with various external disturbances and internal uncertainties in the process of aircraft-bomb separation.In order to suppress the control chattering,an improved extended state observer with time-varying bandwidth is designed to estimate the total uncertainty of the system,so as to form a compensation control signal to improve the control effect.And the Lyapunov stability and finite-time convergence of the control system are proved.The simulation results show that the designed method can realize the fast and stable control of the attitude of the projectile in the initial section of the trajectory and has high control quality,thus ensuring the safety of aircraft-bomb separation and creating a good initial condition for the midcourse guidance.

关 键 词：静不稳定 制导炸弹 机弹分离 姿态控制 不确定性 扩张状态观测器 

分 类 号：TJ765.2[兵器科学与技术—武器系统与运用工程]