干扰抑制SDRE姿态控制方法  

Disturbance rejection SDRE attitude control

作　　者：张银辉[1] 杨华波[1] 江振宇[1] 张为华 

机构地区：[1]国防科学技术大学航天科学与工程学院,湖南长沙410073

出　　处：《西安电子科技大学学报》2015年第5期207-212,共6页Journal of Xidian University

基　　金：国家自然科学基金资助项目(51105368)

摘　　要：针对导弹姿态控制面临的非线性、参数不确定与外界干扰等问题,研究基于非线性干扰观测器的干扰抑制状态相关的黎卡提方程姿态控制方法.首先,引入总干扰概念,将参数不确定与外界干扰等因素对系统的影响统一看作系统总干扰;然后,通过设计总干扰补偿系数,实现具有非匹配干扰抑制能力的状态相关的黎卡提方程姿态控制系统设计;最后,利用非线性干扰观测器得到系统总干扰的估计值.仿真结果表明,所设计的姿态控制方法能够有效跟踪期望攻角指令,同时对系统参数不确定与外界干扰具有较强的抑制能力.The nonlinear disturbance observer based disturbance rejection SDRE attitude control is investigated for a general nonlinear missile with parameter uncertainties and external disturbances.Firstly,the total effects of the parameter uncertainties and external disturbances are regarded as the lumped disturbances.And then,a disturbance compensation gain is carefully designed,so that the disturbance rejection SDRE attitude control method is able to address the mismatched disturbances.Finally,the nonlinear disturbance observer is introduced to estimate the lumped disturbances.Simulation results have demonstrated the precise tracking performance and the disturbance rejection capability of the proposed method with respect to the parameter uncertainties and external disturbances.

关 键 词：非线性干扰观测器 状态相关的黎卡提方程 姿态控制 干扰抑制 

分 类 号：V448[航空宇航科学与技术—飞行器设计]