Systems with delays appear frequently in engineering; typical examples of time-delay
systems are communication networks, chemical processes and tele-operation systems. The …

This book presents new computational tools for the ℋ∞ control of distributed parameter
systems. Transfer functions are considered as input-output descriptions for the plants to be …

Model reduction is an important engineering problem in which one aims to replace an
elaborate model by a simpler model without undue loss of accuracy. The accuracy can be …

The Nehari problem plays an important role in H infin control theory. It is well known that H
infin control problem can be reduced to solving this problem. This note gives a …

In this paper, a strongly stabilizing controller design method, proposed earlier for finite
dimensional systems, is extended to a class of time delay systems. A special factorization of …

Sub-optimal Hankel norm approximation problem: a frequency-domain approach -
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This paper characterizes a class of regular para-Hermitian transfer matrices and then
reveals the elementary characteristics of J-spectral factorization for this class. A transfer …

The Jury table is used to construct orthonormal rational functions. Applications of these
orthonormal functions in the computation of/spl Hscr/;/sub 2/norm, the computation of the …

This paper characterizes a class of regular para-Hermitian transfer matrices and then
studies the J-spectral factorization of this class using similarity transformations. A transfer …

Almost four years have gone since the day I came to The Netherlands to join the Systems,
Signals and Control group of the Faculty of Applied Mathematics, University of Twente, and I …