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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">pribor</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Приборостроение</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of Instrument Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3454</issn><issn pub-type="epub">2500-0381</issn><publisher><publisher-name>Национальный исследовательский университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/0021-3454-2024-67-3-209-219</article-id><article-id custom-type="elpub" pub-id-type="custom">pribor-37</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, MANAGEMENT AND INFORMATION PROCESSING</subject></subj-group></article-categories><title-group><article-title>Синтез наблюдателя переменных состояния и синусоидального возмущения для линейной нестационарной системы с неизвестными параметрами</article-title><trans-title-group xml:lang="en"><trans-title>Synthesis of an observer of state variables and sinusoidal disturbance for a linear nonstationary system with unknown parameters</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>Буй</surname><given-names>В. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Bui</surname><given-names>V. H.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ван Хуан Буй — аспирант,</p><p>Санкт-Петербург.</p></bio><bio xml:lang="en"><p>Van Huan Bui — Post-Graduate Student,</p><p>St. Petersburg.</p></bio><email xlink:type="simple">buinguyenkhanh201095@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Маргун</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Margun</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Анатольевич Маргун — канд. техн. наук; доцент,</p><p>Санкт-Петербург.</p></bio><bio xml:lang="en"><p>Alexey A. Margun — PhD; Associate Professor,</p><p>St. Petersburg.</p></bio><email xlink:type="simple">alexeimargun@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бобцов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bobtsov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Алексеевич Бобцов — д-р техн. наук, профессор,</p><p>Санкт-Петербург.</p></bio><bio xml:lang="en"><p>Alexey A. Bobtsov — Dr. Sci., Professor,</p><p>St. Petersburg.</p></bio><email xlink:type="simple">bobtsov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет ИТМО, факультет систем управления и робототехники</institution></aff><aff xml:lang="en"><institution>ITMO University, Faculty of Control Systems and Robotics</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Университет ИТМО, факультет систем управления и робототехники; Институт проблем машиноведения РАН</institution></aff><aff xml:lang="en"><institution>ITMO University, Faculty of Control Systems and Robotics; Institute for Problems in Mechanical Engineering of the RAS</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>25</day><month>11</month><year>2024</year></pub-date><volume>67</volume><issue>3</issue><fpage>209</fpage><lpage>219</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Национальный исследовательский университет ИТМО, 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Национальный исследовательский университет ИТМО</copyright-holder><copyright-holder xml:lang="en">Национальный исследовательский университет ИТМО</copyright-holder><license xlink:href="https://pribor.ifmo.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://pribor.ifmo.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://pribor.ifmo.ru/jour/article/view/37">https://pribor.ifmo.ru/jour/article/view/37</self-uri><abstract><p>Рассматривается задача синтеза наблюдателя вектора переменных состояния для класса линейных нестационарных систем с произвольной относительной степенью r в условиях внешних мультигармонических возмущений. Входной сигнал предполагается неизвестным. На первом этапе решения задачи синтезируется наблюдатель вектора переменных состояния по измерениям выходной переменной. Для его реализации требуется измерение r-й производной выходного сигнала. Для преодоления данного ограничения вводится вспомогательный наблюдатель, обеспечивающий оценку начальной ошибки наблюдения с использованием метода динамического расширения регрессора с конечным временем сходимости. На основе полученной оценки выполняется восстановление сигналов, требуемых для построения наблюдателя по выходу в виде авторегресионной модели. Предложенный алгоритм обеспечивает оценку вектора состояния объекта по выходу за конечное время. Приведено строгое математическое доказательство полученных результатов. Представлены результаты компьютерного моделирования в программной среде MatLab Simulink, демонстрирующие эффективность и работоспособность предложенного подхода. Разработанный алгоритм может быть применен в различных технических системах для создания виртуальных датчиков и решения задач диагностирования. </p></abstract><trans-abstract xml:lang="en"><p>The problem of synthesizing an observer of a vector of state variables for a class of linear nonstationary systems with an arbitrary relative degree r under conditions of external multi-harmonic disturbances is considered. The input signal is assumed to be unknown. At the first stage of solving the problem, an observer of the vector of state variables is synthesized from the measurements of the output variable. To implement it, it is necessary to measure the r-th derivative of the output signal. To overcome this limitation, an auxiliary observer is introduced, which provides an estimate of the initial observation error using the method of dynamic expansion of the regressor with a finite convergence time. Based on the obtained estimate, the reconstruction of the signals required to construct an output observer in the form of an autoregressive model is carried out. The proposed algorithm provides an estimate of the state vector of an object based on output in a finite time. A rigorous mathematical proof of the obtained solution is given. The results of computer simulation in the MatLab Simulink software environment are presented, demonstrating the effectiveness and efficiency of the proposed approach. The developed algorithm can be used in various technical systems to create virtual sensors and solve diagnostic problems. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>наблюдатель по выходу</kwd><kwd>внешнее возмущение</kwd><kwd>нестационарные системы</kwd><kwd>конечное время сходимости</kwd></kwd-group><kwd-group xml:lang="en"><kwd>output observer</kwd><kwd>external disturbance</kwd><kwd>non-stationary systems</kwd><kwd>finite convergence time</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при поддержке Министерства науки и высшего образования Российской Федерации, госзадание № 2019-0898.</funding-statement><funding-statement xml:lang="en">The research was supported by the Ministry of Science and Higher Education of the Russian Federation, state assignment No. 2019-0898.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Кailath T. 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