Correspondences between input estimation and feedforward control

1 October 1988

journal article
research article
Published by Taylor & Francis in International Journal of Control

Vol. 48 (4) , 1723-1734
https://doi.org/10.1080/00207178808906276

Abstract

A correspondence between input estimation (deconvolution) and feedforward is discussed from a polynomial point of view. Optimal estimation and feedforward control filters are derived from a spectral factorization and a polynomial equation. Simple loop transformations are used for transforming one problem into the other. The close relationship cannot be explained by the well-known duality between optimal state estimation and feedback control. Instead, it rests on the fact that both the problems discussed are open loop. They can be seen as two interpretations of one underlying design problem. Several other open-loop problems can be described in this framework.

Keywords

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