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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.20.195-205</article-id><article-id custom-type="elpub" pub-id-type="custom">novtexmech-608</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>Структурная идентифицируемость нелинейных динамических систем</article-title><trans-title-group xml:lang="en"><trans-title>Structural Identiﬁability of Nonlinear Dynamic Systems</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>Карабутов</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Karabutov</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор технических наук, профессор</p><p>г. Москва</p></bio><bio xml:lang="en"><p>DTS, Professor</p><p>Corresponding author: Karabutov Nikolay N.,  MIREA — Russian Technological University 119454 Moscow, Russian Federation</p></bio><email xlink:type="simple">kn22@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>МИРЭА (Российский технологический университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>MIREA — Russian Technological University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>09</day><month>04</month><year>2019</year></pub-date><volume>20</volume><issue>4</issue><fpage>195</fpage><lpage>205</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Commercial Publisher «New Technologies», 2019</copyright-statement><copyright-year>2019</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/608">https://mech.novtex.ru/jour/article/view/608</self-uri><abstract><p>Предложен подход к анализу структурной идентифицируемости (СИ) нелинейных динамических систем в условиях неопределенности. Данный подход имеет отличие от методов, применяемых для оценки СИ динамических систем в параметрическом пространстве. СИ трактуется как возможность структурной идентификации нелинейной части системы. Введено понятие S-синхронизируемости системы. Показано, что вход системы должен обеспечивать синхронизацию (S-синхронизируемость) системы для решения задачи СИ. Несинхронизируемый вход приводит к получению незначимой структуры, которая не дает решение задачи структурной идентификации. Это приводит к структурной неидентифицируемости системы. Выделено подмножество входов, обладающих свойством S-синхронизируемости, на которых системы являются неразличимыми. Метод оценки СИ основан на анализе специального класса структур. Для класса симметричных нелинейностей предложен метод оценки СИ.</p><p>Изучено влияние параметров входа на возможность оценки СИ системы. Показано, что требования постоянства возбуждения входа в адаптивных системах и системах СИ различаются.</p></abstract><trans-abstract xml:lang="en"><p>Approach to the analysis of nonlinear dynamic systems structural identifiability (SI) under uncertainty is proposed. This approach has difference from methods applied to SI estimation of dynamic systems in the parametrical space. Structural identifiability is interpreted as of the structural identification possibility a system nonlinear part. We show that the input should synchronize the system for the SI problem solution. The S-synchronizability concept of a system is introduced. An unsynchronized input gives an insignificant framework which does not guarantee the structural identification problem solution. It results in structural not identifiability of a system. The subset of the synchronizing inputs on which systems are indiscernible is selected. The structural identifiability estimation method is based on the analysis of framework special class. The structural identifiability estimation method is proposed for systems with symmetric nonlinearities. The input parameter effect is studied on the possibility of the system SI estimation. It is showed that requirements of an excitation constancy to an input in adaptive systems and SI systems differ.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>структура</kwd><kwd>нелинейная динамическая система</kwd><kwd>фазовый портрет</kwd><kwd>структурная идентифицируемость</kwd><kwd>нелинейность</kwd><kwd>синхронизация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>framework</kwd><kwd>nonlinear dynamic system</kwd><kwd>phase portrait</kwd><kwd>structural identification</kwd><kwd>nonlinearity</kwd><kwd>synchronizability</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">Калман Р. 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