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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">ntv</journal-id><journal-title-group><journal-title xml:lang="ru">Научно-технический вестник информационных технологий, механики и оптики</journal-title><trans-title-group xml:lang="en"><trans-title>Scientific and Technical Journal of Information Technologies, Mechanics and Optics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-1494</issn><issn pub-type="epub">2500-0373</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2226-1494-2023-23-4-850-853</article-id><article-id custom-type="elpub" pub-id-type="custom">ntv-232</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>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BRIEF PAPERS</subject></subj-group></article-categories><title-group><article-title>Адаптивный наблюдатель переменных состояния нелинейной  нестационарной системы с неизвестными постоянными параметрами  и запаздыванием в канале измерений</article-title><trans-title-group xml:lang="en"><trans-title>Adaptive observer for state variables of a time-varying nonlinear system  with unknown constant parameters and delayed measurements</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1854-6717</contrib-id><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>Бобцов Алексей Алексеевич — доктор технических наук, профессор, директор мегафакультета</p><p>sc 8046819200</p><p>Санкт-Петербург, 197101</p></bio><bio xml:lang="en"><p>Alexey A. Bobtsov — D.Sc., Professor, Director of School of Computer Technologies and Control</p><p>sc 8046819200</p><p>Saint Petersburg, 197101</p></bio><email xlink:type="simple">bobtsov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8835-5142</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Николаев</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikolaev</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Николаев Николай Анатольевич — кандидат технических наук, доцент, доцент</p><p>sc 13105019100</p><p>Санкт-Петербург, 197101</p></bio><bio xml:lang="en"><p>Nikolay A. Nikolaev — PhD, Associate Professor, Associate Professor</p><p>sc 13105019100</p><p>Saint Petersburg, 197101</p></bio><email xlink:type="simple">nanikolaev@itmo.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-8613-2835</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Козачёк</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozachek</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Козачёк Ольга Андреевна — инженер</p><p>sc 57219308287</p><p>Санкт-Петербург, 197101</p></bio><bio xml:lang="en"><p>Olga A. Kozachek — Engineer</p><p>sc 57219308287</p><p>Saint Petersburg, 197101</p></bio><email xlink:type="simple">oakozachek@itmo.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-5121-0432</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Оськина</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Oskina</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Оськина Ольга Владимировна — студент, инженер</p><p>sc 57353555800</p><p>Санкт-Петербург, 197101</p></bio><bio xml:lang="en"><p>Olga V. Oskina — Student, Engineer</p><p>sc 57353555800</p><p>Saint Petersburg, 197101</p></bio><email xlink:type="simple">ov_oskina@itmo.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет ИТМО</institution><country>Россия</country></aff><aff xml:lang="en"><institution>ITMO University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>15</day><month>12</month><year>2024</year></pub-date><volume>23</volume><issue>4</issue><fpage>850</fpage><lpage>853</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бобцов А.А., Николаев Н.А., Козачёк О.А., Оськина О.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Бобцов А.А., Николаев Н.А., Козачёк О.А., Оськина О.В.</copyright-holder><copyright-holder xml:lang="en">Bobtsov A.A., Nikolaev N.A., Kozachek O.A., Oskina O.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://ntv.elpub.ru/jour/article/view/232">https://ntv.elpub.ru/jour/article/view/232</self-uri><abstract><p>Рассмотрена задача оценки неизвестных постоянных параметров нелинейной нестационарной системы в условиях запаздывания в канале измерений. Целью работы является синтез адаптивного наблюдателя для нелинейной нестационарной системы, обеспечивающего асимптотическую сходимость оценок неизвестных постоянных параметров к истинным значениям. Предложен метод оценивания неизвестных постоянных параметров нелинейной нестационарной системы, базирующийся на технологии GPEBO (Generalized Parameter Estimation Based Observer). На основе технологии GPEBO выполнена параметризация исходной динамической системы к виду линейной регрессионной модели с последующей идентификацией неизвестных параметров. Для оценивания неизвестных параметров линейной регрессионной модели применен метод наименьших квадратов с фактором забывания. В рамках работы предложено расширение предыдущих результатов авторского коллектива на случай нелинейных нестационарных систем с запаздыванием в канале измерений. Предложенный алгоритм оценки параметров может использоваться для решения прикладных задач, таких как контроль технического состояния, а также в задачах синтеза систем автоматического управления.</p></abstract><trans-abstract xml:lang="en"><p>Unknown constant parameters estimation problem for a nonlinear time-varying system with delayed measurements is considered. The objective of this work is to design an adaptive observer for a nonlinear time-varying system. The observer must provide asymptotic convergence of the unknown constant parameters estimates to their true values. The main idea behind the method is to perform the parametrization of initial dynamical system based on GPEBO (Generalized Parameter Estimation Based Observer) technology and to build a linear regression model. The identifcation of linear regression model unknown parameters is performed using least square method with forgetting factor. This work develops the previously published approach for the case of nonlinear time-varying systems with delayed measurements. New parameters estimation algorithm can be applied for technical tasks, such as technical condition control and automatic control systems design.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>идентификация параметров</kwd><kwd>линейная регрессия</kwd><kwd>запаздывание</kwd></kwd-group><kwd-group xml:lang="en"><kwd>parameters identifcation</kwd><kwd>linear regression</kwd><kwd>delay</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа подготовлена при финансовой поддержке Российского научного фонда, грант № 22-21-00499, https://rscf.ru/project/22-21-00499.</funding-statement><funding-statement xml:lang="en">This work was supported by Russian Science Foundation, project no. 22-21-00499, https://rscf.ru/project/22-21-00499.</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">Козачёк А.А., Бобцов А.А., Николаев Н.А. 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