制导炮弹离散自适应滑模控制器设计  

Design of Discrete-time Adaptive Sliding Mode Controller for Guided Projectiles

作　　者：杨荣军[1] 石运国[1] 

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621900

出　　处：《弹道学报》2014年第2期34-38,共5页Journal of Ballistics

基　　金：中国工程物理研究院总体工程研究所创新发展基金项目

摘　　要：针对存在参数误差的制导炮弹,提出了一种离散自适应滑模控制器。考虑到制导炮弹姿态控制系统模型存在的非线性、耦合问题,基于反馈线性化方法将系统离散化,并设计了制导炮弹离散滑模控制器。为减小离散系统中与参数误差对应的准滑模切换带宽度,设计了带死区的参数自适应更新规律,利用李亚普诺夫理论证明了闭环不确定系统的稳定性,使得控制系统具有较强的鲁棒性。仿真结果表明,所设计的控制器能有效地处理含有较大程度气动不确定性的问题,具有较好的跟踪控制性能。The discrete-time adaptive sliding-mode-controller for guided proj ectiles with parameter error was proposed.Considering the nonlinear coupling characteristics of the system,input-output feedback linearization was utilized to transform the system model into two standard form subsystems.The subsystems were discretized,and a discrete-time controller for guided proj ectiles was designed based on sliding mode control principle.In order to diminish the switch width of the discrete-time sliding mode system corresponding to parameter error,a dead-zone parameter adaptive-law was designed.The stability of the uncertain closed-loop system was proved by Lyapunov theory,which made the controller have high robustness.Simulation result indicates that the proposed controller is robust with respect to large aerodynamic parametric uncertainty,and has excellent dynamic tracking performance.

关 键 词：制导炮弹 参数化不确定性 多变量系统 离散自适应滑模控制 

分 类 号：TJ413.6[兵器科学与技术—火炮、自动武器与弹药工程]