FORMALIZATION OF THE PROCEDURE FOR CHOOSING THE OPTIMALITY CRITERION AND FORMULATION THE PROBLEM OF AMMONIUM NITRATE PRODUCTION CONTROL

Authors

Husan Zakirovich Igamberdiev, Full member (academician) of the academy of sciences of the Republic of Uzbekistan, doctor of technical sciences, professor of the department “Information Processing Systems and Control” at Tashkent state technical university named after Islam Karimov, Address: 2 Universitetskaya st., 100095, Tashkent city, Republic of Uzbekistan, E-mail: ihz.tstu@gmail.com;Follow
Uktam Farkhodovich Mamirov, PhD on technical sciences, Associate Professor of the department “Information Processing Systems and Control” at Tashkent state technical university named after Islam Karimov, Address: 2 Universitetskaya st., 100095, Tashkent city, Republic of Uzbekistan, E-mail: uktammamirov@gmail.com, Phone: (90) 900-56-25.Follow

Abstract

The article discusses the questions of formalization of the procedure for choosing an optimality criterion and setting the problem of controlling the production of ammonium nitrate. The analysis of the technical and economic features of the considered production is carried out. As a criterion for the efficient operation of ammonium nitrate production, such a technological indicator as specific technological costs for the main stages, determined by the interval of quasi-stationarity of the object, is used, i.e. the time of its stable work. To solve the control problem, it is proposed to use the decomposition of the control problem into a number of local optimization problems of lower dimension. The optimal values of the state vectors, control and input signals of the object obtained on the basis of these solutions are used at the second level to calculate the gradient of the dual function of the problem of minimizing the Lagrange multipliers. At the third level, the optimal values of the argument obtained at the second level of optimization are used to iteratively maximize the dual function.

First Page

40

Last Page

49

References

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Recommended Citation

Igamberdiev, Husan Zakirovich and Mamirov, Uktam Farkhodovich (2021) "FORMALIZATION OF THE PROCEDURE FOR CHOOSING THE OPTIMALITY CRITERION AND FORMULATION THE PROBLEM OF AMMONIUM NITRATE PRODUCTION CONTROL," Chemical Technology, Control and Management: Vol. 2021: Iss. 4, Article 6.
DOI: https://doi.org/10.51346/tstu-02.21.4-77-0029