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Vestnik Yuzhno-Ural'skogo Universiteta. Seriya Matematicheskoe Modelirovanie i Programmirovanie, 2013, Volume 6, Issue 3, Pages 67–78
(Mi vyuru7)
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Mathematical Modelling
Reconstruction of Distributed Controls in Hyperbolic Systems by Dynamic Method
A. I. Korotkiiab a Institute of Mathematics and Mechanics, Ural Branch, Russian Academy of Sciences
b Ural Federal University, Yekaterinburg, Russian Federation
Abstract:
In the paper an inverse dynamic problem is considered. It consists of reconstructing a priori unknown distributed controls in dynamical systems described by boundary value problems for partial differential equations of hyperbolic type. The source information for solving the inverse problem is the results of approximate measurements of the states (velocities) of the observed system's motion. The problem is solved in the dynamic case, i.e. to solve the problem we can use only the approximate measurements accumulated by this moment. Unknown controls must be reconstructed in dynamics (during the process, during the motion of the system). The problem under consideration is ill-posed. We propose the method of dynamic regularization to solve the problem. This method was elaborated by Yu. S. Osipov and his school. New modifications of dynamic regularizing solution algorithms are devised in this paper. Using these algorithms in contrast to tradition approach we can obtain stronger convergence of regularized approximations, in particular the piecewise uniform convergence. We also demonstrate a finite-dimensional approximation of the problem and the present results of numerical modelling. These results enable us to assess the ability of modified algorithms to reconstruct the subtle structure of desired controls.
Keywords:
dynamical system, control, reconstruction, method of dynamic regularization, piecewise uniform convergence.
Received: 18.03.2013
Citation:
A. I. Korotkii, “Reconstruction of Distributed Controls in Hyperbolic Systems by Dynamic Method”, Vestnik YuUrGU. Ser. Mat. Model. Progr., 6:3 (2013), 67–78
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https://www.mathnet.ru/eng/vyuru7 https://www.mathnet.ru/eng/vyuru/v6/i3/p67
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Abstract page: | 318 | Full-text PDF : | 143 | References: | 75 | First page: | 2 |
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