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In this paper, mixed H2/H∞ output tracking control is investigated for discrete-time systems with multiple time-varying delays. Based on free-weighting matrices method and linear matrix inequality (LMI) technique, the delay-dependent sufficient condition is derived for guaranteeing the asymptotic stability and mixed H2/H∞ output tracking performance of the discrete-time system with multiple time-varying...
In this paper, a novel class of normal realizations for discrete-time systems is derived and characterized. It is shown that these realizations are free of self-sustained oscillations and yield a minimal error propagation gain. The optimal realization problem, defined as to find those normal realizations that minimize roundoff noise gain, is solved analytically. Based on Schur-form, a procedure is...
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