André R. Fioravanti

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This paper addresses the H∞-stability of linear fractional systems with multiple commensurate delays, including those with poles asymptotic to the imaginary axis. The asymptotic location of the neutral chains of poles are obtained, followed by the determination of conditions that guarantee a finite H∞ norm for those systems with all poles in the left(More)
focuses on the H ∞ control design for time-delay linear systems. The results are based on the use of a comparison system obtained via Rekasius' substitution. As it is known from the delay systems' literature, this transformation allows to approximate the non-rational transfer functions by rational ones. Moreover the two transfer functions coincide on the(More)