The stochastic sliding mode variable structure guidance laws based on optimal control theory  

作　　者：Hongqiang WANG Daiqiang CAO Xudong WANG 

机构地区：[1]PLA 95997 Unit [2]Engineering College, Air Force Engineering University

出　　处：《控制理论与应用（英文版）》2013年第1期86-91,共6页

基　　金：supported by the National Natural Science Foundation of China (No. 60674031);the Doctorate Foundation of the Engineering College, Air Force Engineering University (No. BC07004)

摘　　要：A stochastic sliding-mode variable structure guidance law involving optimal control theory is presented for the missile target intercept model, in which state noise, uncertain system parameters, target movement and measured noise are considered. This guidance law synthesizes the merits of optimal guidance law with line-of-sight rate convergence and sliding-mode guidance law with strong robustness. Through theoretic analysis, it is proved that the sliding mode hyperplane is sub-achievable in the closed loop system. The numerical results show the effectiveness of the proposed control algorithm.A stochastic sliding-mode variable structure guidance law involving optimal control theory is presented for the missile target intercept model, in which state noise, uncertain system parameters, target movement and measured noise are considered. This guidance law synthesizes the merits of optimal guidance law with line-of-sight rate convergence and sliding-mode guidance law with strong robustness. Through theoretic analysis, it is proved that the sliding mode hyperplane is sub-achievable in the closed loop system. The numerical results show the effectiveness of the proposed control algorithm.

关 键 词：Stochastic system Variable structure control Optimal control Guidance law ROBUST 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]