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Fault-Tolerant Control of Near Space Vehicles Based on Sliding Mode Observer
Author(s): LIN Chang-qing, LI Xue-hu
Pages: 394-
398
Year: 2012
Issue:
3
Journal: Control Engineering of China
Keyword: 临近空间飞行器; 容错控制; 模型参考; 滑模观测器;
Abstract: 针对临近空间飞行器中结构未知的执行器故障,提出一种基于滑模观测器的容错控制方法.采用Edwards-Spurgeon观测器结构设计滑模观测器,实现对执行器故障的鲁棒估计.根据所得的故障信息设计模型参考滑模容错控制器,控制律的非线性增益分为两部分,保证系统的鲁棒容错性能.一部分利用参数不确定的界值条件设计,一部分基于鲁棒故障估计信息设计.基于李雅普诺夫稳定性理论证明了系统的渐近稳定性.仿真结果表明,...
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