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An innovation approach to H∞ fixed-lag smoothing for continuous time-varying systems

机译:连续时变系统H∞固定滞后平滑的创新方法

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摘要

This note studies the finite horizon H∞ fixed-lag smoothing problem for linear continuous time-varying systems. A technique named as reorganized innovation analysis in Krein space is developed to give a necessary and sufficient condition for the existence of an H∞ fixed-lag smoother. The condition is given in terms of the boundedness of two matrix functions which are derived from the solutions of two Riccati differential equations (RDEs), one standard H∞ filtering RDE and one H2 type of RDE. Examples demonstrate the proposed H∞ fixed-lag smoother design and the fact that the existence of an H∞ smoother does not depend on the solvability of H∞ filtering.
机译:本文研究了线性连续时变系统的有限水平H∞固定滞后平滑问题。提出了一种在Kerin空间中称为重组创新分析的技术,为存在H∞固定滞后平滑器提供了充要条件。根据两个矩阵函数的有界性给出条件,这是从两个Riccati微分方程(RDE),一种标准H∞滤波RDE和一种H2类型的RDE的解中得出的。实例演示了提出的H∞固定滞后平滑器设计,以及H∞平滑器的存在不取决于H∞滤波的可解性的事实。

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