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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">novtexmech</journal-id><journal-title-group><journal-title xml:lang="ru">Мехатроника, автоматизация, управление</journal-title><trans-title-group xml:lang="en"><trans-title>Mekhatronika, Avtomatizatsiya, Upravlenie</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1684-6427</issn><issn pub-type="epub">2619-1253</issn><publisher><publisher-name>Commercial Publisher «New Technologies»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17587/mau.26.579-587</article-id><article-id custom-type="elpub" pub-id-type="custom">novtexmech-1853</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>СИСТЕМНЫЙ АНАЛИЗ, УПРАВЛЕНИЕ И ОБРАБОТКА ИНФОРМАЦИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SYSTEM ANALYSIS, CONTROL AND INFORMATION PROCESSING</subject></subj-group></article-categories><title-group><article-title>Синтез оптимального следящего управления на конечном интервале времени для нелинейных систем на основе SDC-метода</article-title><trans-title-group xml:lang="en"><trans-title>Finite-Horizon Optimal Tracking Control for Nonlinear Systems Based on the SDC Method</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кабанов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kabanov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, доц., </p><p>Севастополь.</p></bio><bio xml:lang="en"><p>Ph.D., Associate Professor,</p><p>Sevastopol, 299053.</p></bio><email xlink:type="simple">kabanovaleksey@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Севастопольский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Sevastopol State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>08</day><month>11</month><year>2025</year></pub-date><volume>26</volume><issue>11</issue><fpage>579</fpage><lpage>587</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Commercial Publisher «New Technologies», 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Commercial Publisher «New Technologies»</copyright-holder><copyright-holder xml:lang="en">Commercial Publisher «New Technologies»</copyright-holder><license xlink:href="https://mech.novtex.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://mech.novtex.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://mech.novtex.ru/jour/article/view/1853">https://mech.novtex.ru/jour/article/view/1853</self-uri><abstract><p>Рассматривается задача синтеза оптимального следящего управления для нелинейных систем на конечном интервале времени. При этом используется представление системы в форме пространства состояний с матрицами, коэффициенты которых зависят от состояния (state-dependent coefficients, SDC). Проблема поиска решения для задачи слежения на конечном интервале времени в нелинейной SDC-постановке связана с поиском решения матричного дифференциального уравнения Риккати и дифференциального уравнения для вспомогательного вектора прямой связи, начальные условия для которых обычно задаются на правом конце. Типовой подход к решению таких задач использует интегрирование этих уравнений в обратном направлении (справа налево), где для расчета SDC-матриц системы требуется информация о переменных состояния системы и управления, которая без применения дополнительных мер не доступна. Для преодоления указанной проблемы неизвестности вектора состояния при интегрировании "справа налево" в данной статье предложен подход к синтезу, основанный на выводе решения через соответствующие дифференциальные уравнения для матрицы Риккати и вспомогательного вектора, начальные условия для которых однозначно задаются на левом конце временного интервала благодаря применению специального преобразования Риккати, отличного от типового. Это позволяет рассчитать управление интегрированием соответствующих дифференциальных уравнений в прямом времени, что снимает проблему неизвестности вектора состояния. Предложенный подход протестирован на академическом примере осциллятора Ван дер Поля, для которого дополнительно выполнено исследование результативности предложенного метода в сравнении с наиболее популярными существующими подходами. Результаты компьютерного моделирования подтвердили преимущество предложенного метода как с точки зрения терминальной точности слежения за задающим сигналом, так и с точки зрения среднеквадратической ошибки слежения.</p></abstract><trans-abstract xml:lang="en"><p>The paper considers the problem of optimal tracking control for nonlinear systems on a finite time interval. In this case, the system is represented in the state space form with state-dependent coefficients (SDC) matrices. The problem of finding a solution to the tracking problem on a finite time interval in the nonlinear SDC formulation is associated with finding a solution to the state-dependent differential Riccati equation and the differential equation for the auxiliary feedforward vector, the initial conditions for which are usually specified at the right end. А typical approach to solving such problems uses the integration of these equations in the backward direction (from right to left), where the calculation of the SDC matrices of the system requires information on the state variables of the system and control, which is not available without additional measures. To overcome the indicated problem of the unknown state vector during backward integration, this paper proposes an approach based on deriving a solution through the corresponding differential equations for the Riccati matrix and the auxiliary vector, the initial conditions for which are uniquely specified at the left end of the time interval due to the use of a special Riccati transform, different from the typical one. This allows calculating the control through the integration of the corresponding differential equations in direct time, which removes the problem of the unknown state vector. The proposed approach is tested on the academic example of the Van der Pol oscillator, for which an additional study of the effectiveness of the proposed method in comparison with the most popular existing approaches is performed. The results of computer modeling confirmed the advantage of the proposed method, both in terms of the terminal accuracy of tracking the driving signal, and in terms of the mean square error of tracking.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>следящее управление</kwd><kwd>нелинейная система</kwd><kwd>уравнение Риккати</kwd><kwd>зависящие от состояния коэффициенты</kwd></kwd-group><kwd-group xml:lang="en"><kwd>tracking control</kwd><kwd>nonlinear system</kwd><kwd>Riccati equation</kwd><kwd>state-dependent coefficients</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Berkovitz L. D., Medhin N. G. Nonlinear optimal control theory. 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