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H and H2 design techniques for a class of prefilters

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3 Author(s)
Giusto, A. ; Instituto de Ingeneria Electrica, Univ. de la Republica, Montevideo, Uruguay ; Neto, A.T. ; Castelan, E.B.

This paper presents H and H2 techniques for the design of a certain class of prefilters. In order to avoid high order prefilters we use a particular structure in which both prefilter and feedback controller share the same dynamics. The suboptimal H design problem is shown to be equivalent to a linear matrix inequality (LMI) constraint, and the solution of the H2 optimal design may be obtained by a simple formula. The H 2 technique developed is illustrated on a helicopter example and compared with classical techniques

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Automatic Control, IEEE Transactions on  (Volume:41 ,  Issue: 6 )