Title :
H∞ and H2 design techniques for a class of prefilters
Author :
Giusto, Alvaro ; Neto, Alexandre Trofino ; Castelan, EugCnio B.
Author_Institution :
Instituto de Ingeneria Electrica, Univ. de la Republica, Montevideo, Uruguay
fDate :
6/1/1996 12:00:00 AM
Abstract :
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
Keywords :
H∞ control; aircraft control; closed loop systems; control system synthesis; feedback; filtering theory; frequency response; helicopters; H∞ control; H2 control; LMI constraint; closed loop systems; dynamics; feedback control; helicopter control; linear matrix inequality; prefilters; transfer function; Adaptive control; Automatic control; Control systems; Feedback; H infinity control; Lyapunov method; Robust stability; Robustness; Sun; Uncertainty;
Journal_Title :
Automatic Control, IEEE Transactions on
