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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.26.594-604</article-id><article-id custom-type="elpub" pub-id-type="custom">novtexmech-1855</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>РОБОТЫ, МЕХАТРОНИКА И РОБОТОТЕХНИЧЕСКИЕ СИСТЕМЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ROBOT, MECHATRONICS AND ROBOTIC SYSTEMS</subject></subj-group></article-categories><title-group><article-title>Метод идентификации торсионной жесткости вращательного шарнира манипулятора с использованием инерциального измерительного модуля</article-title><trans-title-group xml:lang="en"><trans-title>Method for Torsional Stiffness Coefficient Identification of a Manipulator Rotational Joint using an Inertial Measurement Unit</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>Юхимец</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yukhimets</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р техн. наук, вед. науч. сотр.,</p><p>г. Владивосток.</p></bio><bio xml:lang="en"><p>Dr. Sci. Tech., Head of Research,</p><p>Vladivostok, 690041.</p></bio><email xlink:type="simple">undim@iacp.dvo.ru</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>Григорьев</surname><given-names>И. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Grigorev</surname><given-names>I. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>мл. науч. сотр., </p><p>г. Владивосток.</p></bio><bio xml:lang="en"><p>Vladivostok, 690041.</p></bio><email xlink:type="simple">grigorev_im@iacp.dvo.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт проблем морских технологий ДВО РАН; Институт автоматики и процессов управления ДВО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Marine Technology Problems FEB RAS; Institute of Automation and Control Processes FEB RAS</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>594</fpage><lpage>604</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/1855">https://mech.novtex.ru/jour/article/view/1855</self-uri><abstract><p>Информация о параметрах жесткости шарниров и звеньев манипуляторов часто необходима для реализации высокоточных систем управления, использующихся для выполнения технологических операций с субмиллиметровой точностью при наличии внешних нагрузок. В статье предлагается метод идентификации коэффициента торсионной жесткости шарнира одностепенного манипулятора на основе использования микроэлектромеханического инерциального измерительного модуля (ИИМ), состоящего из акселерометра и датчика угловых скоростей. Метод основан на идентификации модели динамики шарнира с неизвестным коэффициентом торсионной жесткости, описываемой с помощью передаточной функции (ПФ), на основе информации о входных и выходных сигналах этой ПФ (угол поворота двигателя и угол поворота звена соответственно). Для идентификации параметров ПФ шарнира строится амплитудно-частотная (АЧХ) и фазо-частотная (ФЧХ) характеристики системы. Для этого на вход привода подаются гармонические сигналы, имеющие разную частоту. Входной сигнал ПФ измеряется с помощью энкодера двигателя, а выходной сигнал восстанавливается по данным, поступающим от ИИМ. С помощью измеренных входных и выходных сигналов рассчитываются изменение амплитуды и сдвиг фазы проходящего через систему сигнала. На основе этих данных и аналитического описания АЧХ и ФЧХ рассчитываются постоянные времени ПФ, описывающей шарнир с неизвестным коэффициентом жесткости. Затем значения идентифицированных постоянных времени используются для расчета коэффициента жесткости. Предложенный метод, в отличии от существующих методов идентификации коэффициентов жесткости манипуляторов, не требует дополнительного оборудования для приложения внешних сил к манипулятору или использования дорогостоящих внешних высокоточных измерительных систем для измерения смещений рабочего инструмента в пространстве. Результаты экспериментальной проверки предложенного метода на одностепенном манипуляторе подтверждают его работоспособность и высокую точность.</p></abstract><trans-abstract xml:lang="en"><p>Knowledge of the manipulator’s joints and links stiffness parameters is often necessary for high-precision control in the presence of external loads. The article proposes a method for identifying torsion stiffness coefficient of a rotational joint of a 1-DOF manipulator using a microelectromechanical inertial measurement module (IMU) consisting of an accelerometer and an angular velocity sensor. The method is based on describing the dynamics of a joint with an unknown torsional stiffness coefficient using a transfer function (TF) with known input and output signals (the angle of rotation of the motor and the angle of rotation of the link, respectively). The input signal of the TF is read from the engine encoder, and the output signal is reconstructed from the data from the IMU. When harmonic signals with different frequencies are assigned to the drive, the amplitude change and phase shift of the signal passing through the system are measured. Based on the data obtained, the amplitude-phase frequency response of the system is constructed, from which the time constants of the TF describing this system are calculated. The time constants depend on the mechanical characteristics of the system, including the torsion stiffness coefficient of the virtual spring, which is calculated based on the identified time constants. The method, unlike the existing ones, does not require bulky equipment for applying external forces to the manipulator, nor expensive measuring systems for measuring displacements in space. The results of experimental validation on a 1-DOF manipulator confirm the workability of the proposed method.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>жесткость вращательного шарнира</kwd><kwd>эласто-статические параметры</kwd><kwd>инерциальный измерительный модуль</kwd><kwd>передаточные функции механических систем</kwd></kwd-group><kwd-group xml:lang="en"><kwd>rotational joint stiffness</kwd><kwd>elastostatic parameters</kwd><kwd>inertial measuring unit</kwd><kwd>transfer functions of mechanical systems</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке РНФ (грант №25-41-00044).</funding-statement><funding-statement xml:lang="en">This work is supported by Russian Science Foundation (grant 25-41-00044).</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">Wang C., Zheng M., Wang Z., Tomizuka M. 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