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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Informacionnye Tehnologii</journal-id><journal-title-group><journal-title xml:lang="en">Informacionnye Tehnologii</journal-title><trans-title-group xml:lang="ru"><trans-title>Информационные технологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1684-6400</issn><publisher><publisher-name xml:lang="en">New Technologies Publishing House</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">702200</article-id><article-id pub-id-type="doi">10.17587/it.31.93-100</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Automated control systems for technological processes</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Автоматизированные системы управления технологическими процессами</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Gradient reduction algorithm for determining control regulation: general approach and application to chemical kinetics problems</article-title><trans-title-group xml:lang="ru"><trans-title>Алгоритм градиентного спуска для поиска оптимального управления: общий подход и применение к задачам химической кинетики</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mustafina</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Мустафина</surname><given-names>С. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sc., Professor</p></bio><bio xml:lang="ru"><p>д-р физ.-мат. наук, проф.</p></bio><email>mustafina_sa@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gallyamitdinov</surname><given-names>I. I.</given-names></name><name xml:lang="ru"><surname>Галлямитдинов</surname><given-names>И. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Graduate Student</p></bio><bio xml:lang="ru"><p>аспирант</p></bio><email>ishmorat@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Ufa University of Science and Technology</institution></aff><aff><institution xml:lang="ru">Уфимский университет науки и технологий</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-02-15" publication-format="electronic"><day>15</day><month>02</month><year>2025</year></pub-date><volume>31</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>93</fpage><lpage>100</lpage><history><date date-type="received" iso-8601-date="2026-02-04"><day>04</day><month>02</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-02-04"><day>04</day><month>02</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Informacionnye Tehnologii</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Информационные технологии</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Informacionnye Tehnologii</copyright-holder><copyright-holder xml:lang="ru">Информационные технологии</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/1684-6400/article/view/702200">https://journals.eco-vector.com/1684-6400/article/view/702200</self-uri><abstract xml:lang="en"><p>A gradient descent algorithm for optimal control of dynamic systems is developed taking into account the free right end of the trajectory and control constraints. A feature of the algorithm is the possibility of its generalization for various boundary conditions. The main attention is paid to the mathematical justification of the method and its application to problems of chemical kinetics. Numerical experiments are conducted confirming the efficiency of the algorithm for optimizing real chemical processes.</p></abstract><trans-abstract xml:lang="ru"><p>Разработан алгоритм градиентного спуска для оптимального управления динамическими системами с учетом свободного правого конца траектории и ограничений на управление. Особенность алгоритма — возможность его обобщения для различных краевых условий. Основное внимание уделяется математическому обоснованию метода и его применению к задачам химической кинетики. Проведены численные эксперименты, подтверждающие эффективность алгоритма для оптимизации реальных химических процессов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>optimal control</kwd><kwd>gradient descent</kwd><kwd>phase variables</kwd><kwd>functional</kwd><kwd>chemical kinetics</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>оптимальное управление</kwd><kwd>градиентный спуск</kwd><kwd>фазовые переменные</kwd><kwd>функционал</kwd><kwd>химическая кинетика</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский научный фонд</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Science Foundation</institution></institution-wrap></funding-source><award-id>24-21-00186</award-id></award-group><funding-statement xml:lang="en">The study was supported by the Russian Science Foundation grant № 24-21-00186, https://rscf.ru/project/24-21-00186/.</funding-statement><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 24-21-00186, https://rscf.ru/project/24-21-00186/.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Pontryagin L. 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