论文摘要
Based on the switched nonlinear system, a switched adaptive Active Disturbance Rejection Control（ADRC） law is proposed for the Variable Structure Near Space Vehicle（VSNSV） with unknown uncertainties and external disturbances. The reduced-order Extended State Observers（ESOs） are constructed for the attitude angle system and the angular rate system to estimate the total disturbance in real time. With the extended state introduced to counteract the effects of uncertainties and disturbances, a systematic procedure is presented for the synthesis of the switched adaptive ADRC strategy. Rigorous proof shows that the estimation errors of the reduced-order ESOs would converge to a small neighborhood of zero in finite time, and that the output of the closedloop system can track a given signal stably for a class of switching signals with average dwell time via the proposed approach. The variable gain control strategy based on Adaptive Dynamic Programming（ADP） with the actor-critic structure is also designed to improve the dynamic performance of the system. Simulation results verify the effectiveness and advantage of the proposed control scheme.
论文目录
文章来源
类型: 期刊论文
作者: Chaoyang DONG,Chen LIU,Qing WANG,Ligang GONG
来源: Chinese Journal of Aeronautics 2019年07期
年度: 2019
分类: 工程科技Ⅱ辑
专业: 航空航天科学与工程
单位: School of Aeronautic Science and Engineering,Beihang University,Beijing Institute of Electric System Engineering,School of Automation Science and Electrical Engineering,Beihang University
基金: supported by the National Natural Science Foundation of China(Nos.61374012,61403028),Aeronautical Science Foundation of China(No.2016ZA51011)
分类号: V448.2
页码: 1684-1694
总页数: 11
文件大小: 1690K
下载量: 24