Analysis of one class of optimal control problems for distributed-parameter systems

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.241232

Keywords:

nonlinear boundary value problems, functional convergence, Pontryagin’s maximum principle, minimizing sequence

Abstract

In the paper, the method of straight lines approximately solves one class of optimal control problems for systems, the behavior of which is described by a nonlinear equation of parabolic type and a set of ordinary differential equations. Control is carried out using distributed and lumped parameters. Distributed control is included in the partial differential equation, and lumped controls are contained both in the boundary conditions and in the right-hand side of the ordinary differential equation. The convergence of the solutions of the approximating boundary value problem to the solution of the original one is proved when the step of the grid of straight lines tends to zero, and on the basis of this fact, the convergence of the approximate solution of the approximating optimal problem with respect to the functional is established.

A constructive scheme for constructing an optimal control by a minimizing sequence of controls is proposed. The control of the process in the approximate solution of a class of optimization problems is carried out on the basis of the Pontryagin maximum principle using the method of straight lines. For the numerical solution of the problem, a gradient projection scheme with a special choice of step is used, this gives a converging sequence in the control space. The numerical solution of one variational problem of the mentioned type related to a one-dimensional heat conduction equation with boundary conditions of the second kind is presented. An inequality-type constraint is imposed on the control function entering the right-hand side of the ordinary differential equation. The numerical results obtained on the basis of the compiled computer program are presented in the form of tables and figures.

The described numerical method gives a sufficiently accurate solution in a short time and does not show a tendency to «dispersion». With an increase in the number of iterations, the value of the functional monotonically tends to zero

Author Biographies

Kamil Mamtiyev, Azerbaijan State University of Economics

PhD, Associate Professor

Department of Digital Technologies and Applied Informatics

Tarana Aliyeva, Azerbaijan State University of Economics

PhD, Associate Professor

Department of Digital Technologies and Applied Informatics

Ulviyya Rzayeva, Azerbaijan State University of Economics

PhD, Associate Professor

Department of Digital Technologies and Applied Informatics

References

  1. Butkovsky, A. G. (1965). Theory of optimal control of systems with distributed parameters. Moscow: Science, 474.
  2. Butkovsky, A. G., Egorov, A. I., Lurie, K. A. (1968). Optimal Control of Distributed Systems (A Survey of Soviet Publications). SIAM Journal on Control, 6 (3), 437–476. doi: https://doi.org/10.1137/0306029
  3. Egorov, A. I., Znamenskaya, L. N. (2005). Control of vibrations of coupled objects with distributed and lumped parameters. Computational Mathematics and Mathematical Physics, 45 (10), 1701–1718. Available at: http://www.mathnet.ru/php/archive.phtml?wshow=paper&jrnid=zvmmf&paperid=578&option_lang=eng
  4. Egorov, A. I., Znamenskaya, L. N. (2006). Controllability of vibrations of a system of objects with distributed and lumped parameters. Computational Mathematics and Mathematical Physics, 46 (6), 955–970. doi: https://doi.org/10.1134/s0965542506060054
  5. Egorov, A. I., Znamenskaya, L. N. (2009). Controllability of vibrations of a net of coupled objects with distributed and lumped parameters. Computational Mathematics and Mathematical Physics, 49 (5), 786–796. doi: https://doi.org/10.1134/s0965542509050054
  6. Panferov, V. I., Anisimova, E. Y. (2009). On optimal control over heating of buildings as a distributed-parameter process. Bulletin of South Ural State University, 3, 24–28. Available at: https://dspace.susu.ru/xmlui/bitstream/handle/0001.74/708/5.pdf?sequence=1&isAllowed=y
  7. Teimurov, R. A. (2013). The problem of optimal control for moving sources for systems with distributed parameters. Vestnik Tomskogo Gosudarstvennogo Universiteta. Matematika i Mekhanika, 1 (21), 24–33. Available at: http://www.mathnet.ru/php/archive.phtml?wshow=paper&jrnid=vtgu&paperid=290&option_lang=eng
  8. Andreev, Yu. N., Orkin, V. M. (1969). Concerning approximate solution of problem of distributed system optimal control. Automation and Remote Control, 30 (5), 681–690. Available at: http://www.mathnet.ru/php/archive.phtml?wshow=paper&jrnid=at&paperid=10161&option_lang=eng
  9. Kamil, M., Tarana, A., Ulviyya, R. (2020). Solution of One Problem on Optimum Gas Well Operation Control. Economic computation and economic cybernetics studies and research, 54 (4/2020), 249–264. doi: https://doi.org/10.24818/18423264/54.4.20.16
  10. Sakawa, Y. (1964). Solution of an optimal control problem in a distributed-parameter system. IEEE Transactions on Automatic Control, 9 (4), 420–426. doi: https://doi.org/10.1109/tac.1964.1105753
  11. Leonchuk, M. P. (1964). Numerical solution of problems of optimal processes with distributed parameters. USSR Computational Mathematics and Mathematical Physics, 4 (6), 189–198. doi: https://doi.org/10.1016/0041-5553(64)90091-6

Downloads

Published

2021-10-29

How to Cite

Mamtiyev, K., Aliyeva, T., & Rzayeva, U. (2021). Analysis of one class of optimal control problems for distributed-parameter systems. Eastern-European Journal of Enterprise Technologies, 5(4 (113), 26–33. https://doi.org/10.15587/1729-4061.2021.241232

Issue

Section

Mathematics and Cybernetics - applied aspects