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ISSN 0012-2661, Differential Equations, 2006, Vol. 42, No. 11, pp. 1515–1523. c Pleiades Publishing, Inc., 2006. Original Russian Text c A.V. Arutyunov, 2006, published in Differentsial’nye Uravneniya, 2006, Vol. 42, No. 11, pp. 1443–1451. ORDINARY DIFFERENTIAL EQUATIONS Controllability of Nonlinear Systems with Constrained Controls A. V. Arutyunov Russian University of Nations’ Friendship, Moscow, Russia Received May 22, 2006 DOI: 10.1134/S0012266106110012 STATEMENT OF THE PROBLEM Consider the following system of differential equations with a control: x ˙ = f (x, u, t),t ∈ [t ,t ],x (t )= x ,u(t) ∈ U (t) ∀t. (1) 0 1 0 0 Here t ∈ [t ,t ]istime, t <t are given, x is a phase variable ranging in the n-dimensional 0 1 0 1 n m arithmetic space R , u ∈ R is a control parameter, and the symbol ∀ is treated as “almost all.” n m n The initial point x is given. The vector function f : R × R × [t ,t ] → R is twice continuously 0 0 1 differentiable with respect to (x, u) for almost all t, and in addition, this function, together with its partial derivatives of order ≤ 2 with
Differential Equations – Springer Journals
Published: Jan 3, 2006
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