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基于辅助输出构造的未知输入观测器设计

, PP. 349-354

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Abstract:

研究了观测器匹配条件不满足之前提下,状态和未知输入同时估计的未知输入观测器的设计方法.基于可测输出相对于未知输入的相关度的概念,给出了可以满足匹配条件的辅助输出的构造方法.考虑了一种高阶滑模观测器,根据原系统的可测输出不仅能给出辅助输出、还能给出其微分在有限时间内的精确估计.基于辅助输出,提出一种能对状态渐近估计的降维观测器设计方法.基于状态和辅助输出之微分的估计,提出了一种未知输入的重构方法,该方法具有不必用到系统微分信息的优点.最后通过一仿真实验验证方法的可行性.

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