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A unified theory of full-order and low-order observers based on singular system theory

机译:基于奇异系统理论的全阶和低阶观测者统一理论

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摘要

The standard construction of the minimal-order state observer for a linear time-invariant plant is shown to be a degenerate form of the ordinary full-order observer. The naive state estimation technique of successively differentiating the plant output is also shown to be a limiting case of the same full-order structure. Various results concerning the set of all degenerate forms of the full-order observer are presented. In particular, conditions are established under which shifting observer eigenvalues far to the left in the complex plane implies proximity to a successively differentiating system. In addition, it is shown that such a scheme can never yield satisfactory estimation. Singular perturbation and singular system theory are used throughout the analysis.
机译:线性时不变植物的最小阶状态观测器的标准结构显示为普通全阶观测器的简并形式。连续区分工厂输出的朴素状态估计技术也显示为相同全序结构的极限情况。提出了有关全阶观测器的所有简并形式集的各种结果。特别地,建立了这样的条件,在该条件下,观察者特征值在复平面中向左移动很远,这意味着接近相继的微分系统。另外,表明这种方案永远不能产生令人满意的估计。在整个分析中都使用奇异摄动和奇异系统理论。

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