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JOURNALS // Sibirskii Zhurnal Vychislitel'noi Matematiki // Archive

Sib. Zh. Vychisl. Mat., 2021 Volume 24, Number 3, Pages 229–251 (Mi sjvm777)

Control of effects in the right-hand sides of a large ODE system of a block structure and optimization of sources in unseparated boundary conditions

K. R. Aida-zadeab, Y. R. Ashrafovaac

a Institute of Control Systems of the Azerbaijan National Academy of Sciences, Baku, Azerbaijan
b Institute of Mathematics and Mechanics of the Azerbaijan National Academy of Sciences, Baku, Azerbaijan
c Baku State University, Baku, Azerbaijan

Abstract: In this paper, we investigate the problem of control of a complex object, described by a large ODE system of a block structure with unseparated boundary conditions between blocks. The controls in the right-hand sides of the equations and the values of the source parameters in the boundary conditions are to be optimized. We propose to apply the first order optimization methods for the numerical solution to the optimal control problem, using functional gradient formulas participating in the obtained necessary optimality conditions. Special schemes of the sweep method for the solution to the direct and conjugate boundary value problems, having a block structure, and unseparated non-local boundary conditions are offered. This method takes into account special features of ODE systems and boundary conditions, allows the transfer of boundary conditions for each block and each boundary condition in the block independent of each other. The obtained results of numerical experiments in solving the test problem and their analysis are given.

Key words: block structure, large system of ODE, unseparated conditions, functional gradient, optimality conditions, sweep method.

UDC: 519.7, 519.621

Received: 28.04.2020
Revised: 04.06.2020
Accepted: 14.04.2021

DOI: 10.15372/SJNM20210301


 English version:
Numerical Analysis and Applications, 2021, 14:3, 201–219

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© Steklov Math. Inst. of RAS, 2026