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Bulletin of Irkutsk State University. Series Mathematics, 2025 Volume 52, Pages 3–20 (Mi iigum605)

Dynamic systems and optimal control

On controllability and stabilization of nonlinear continuous-discrete dynamic systems

S. V. Akmanova

Nosov Magnitogorsk State Technical University, Magnitogorsk, Russian Federation

Abstract: The paper considers the issues of control and stabilization of nonlinear dynamic systems described by a set of differential and difference equations, the latter of which contain a control vector. The states of these systems have both continuous and discrete components, so such systems are called continuous-discrete or hybrid. Necessary and sufficient features of controllability of nonlinear hybrid systems with a constant discretization step are established, which imply a transition from these systems to equivalent, in the natural sense, nonlinear discrete dynamic systems. A transformation is presented that allows reducing a linear discrete system to the canonical Brunovsky form and constructing a stabilizing control on its basis for the corresponding continuous-discrete system with scalar control. An algorithm for reducing a first approximation system of a nonlinear discrete system with scalar control to the canonical Brunovsky form and an algorithm for constructing a stabilizing control for nonlinear hybrid systems with scalar control are developed and illustrated with examples. Sufficient signs of stabilization of nonlinear hybrid systems are presented both without and with the feedback controller.

Keywords: continuous-discrete system, discrete system, hybrid system, controlled system, stabilized system.

UDC: 517.938

MSC: 34A34, 37N35, 34D20

Received: 05.09.2024
Revised: 19.11.2024
Accepted: 15.01.2025

DOI: 10.26516/1997-7670.2025.52.3



© Steklov Math. Inst. of RAS, 2026