Abstract
The uncertain system
is considered, where the coefficients a ij (n) of the m×m matrix A n are functionals of any nature subject to the constraints
Such systems include, in particular, switched-type systems, whose matrix A can take values in a given finite set.
By using a special Lyapunov function, a bound δ ≤ δ(α0,α*) ensuring the global asymptotic stability of the system is found. In particular, the system is stable if the last inequality is replaced by a i,j (n) = 0 for j < i.
It is shown that pulse-width modulated systems reduce to the uncertain systems under consideration; moreover, in the case of a pulse-width modulation of the first kind, the coefficients of the matrix A are functions of x(n), and in the case of a modulation of the second kind, they are functionals.
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Additional information
Original Russian Text © I.E. Zuber, A.Kh. Gelig, 2009, published in Vestnik Sankt-Peterburgskogo Universiteta. Seriya 1. Matematika, Mekhanika, Astronomiya, 2009, No. 1, pp. 3–9.
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Zuber, I.E., Gelig, A.K. Stability of uncertain discrete systems. Vestnik St.Petersb. Univ.Math. 42, 1–6 (2009). https://doi.org/10.3103/S1063454109010014
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DOI: https://doi.org/10.3103/S1063454109010014