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Robust Observers for Linear Systems With Unknown Inputs: a Review
Olfa Boubaker
Institut National des Sciences Appliquées et de Technologie
(INSAT)
Centre Urbain Nord, B.P. N°676, 1080 TUNIS CEDEX, Tunisia
Abstract
In this paper, robust observers for linear systems with unknown inputs are reviewed. Both full and reduced order designs are considered. Transformations and substitutions based on coordinate system are used and existence conditions are provided. Full order observer designs are simple and estimates all states, those of reduced order are more complex and have the advantage of avoiding redundancy caused by reconstructing accessible states. Designs, advantages and drawbacks of the reviewed techniques are pointed and illustrated by means of the same numerical example. Keywords: Robust observers, full order observers, reduced order observers, linear systems, Unknown inputs.
BibTex: @ARTICLE{P1110509001, AUTHOR = {O. Boubaker }, TITLE = {Robust Observers for Linear Systems With Unknown Inputs: a Review }, JOURNAL = {ICGST International Journal on Automatic Control and System Engineering, ACSE}, YEAR = {2005}, VOLUME = {05}, ISSUE = {II}, PAGES = {45--50} }
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