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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">10.17586/0021-3454-2025-68-8-696-703</article-id><article-id custom-type="elpub" pub-id-type="custom">pribor-401</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>ОПТИЧЕСКИЕ И ОПТИКО-ЭЛЕКТРОННЫЕ ПРИБОРЫ И КОМПЛЕКСЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>OPTICAL AND OPTOELECTRONIC DEVICES AND COMPLEXES</subject></subj-group></article-categories><title-group><article-title>Отражатель с цилиндрической гранью и непрямым углом между плоскими для трехкоординатных измерений</article-title><trans-title-group xml:lang="en"><trans-title>Reflector with a Cylindrical Face and a Non-right Angle Between the Flat Ones for Three-coordinate Measurements</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>Никитин</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikitin</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Михайлович Никитин — соискатель; Высшая инженерно-техническая школа; инженер</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Mikhail M. Nikitin — Higher School of Engineering and Technology; Engineer</p><p>St. Petersburg</p></bio><email xlink:type="simple">mmnikitin@itmo.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>Коняхин</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Konyakhin</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Игорь Алексеевич Коняхин — д-р техн. наук, профессор; инженерно-исследовательский факультет; профессор</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Igor A. Konyakhin — Dr. Sci., Professor; Faculty of Engineering Research; Professor</p><p>St. Petersburg</p></bio><email xlink:type="simple">igor@grv.ifmo.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></aff><aff xml:lang="en"><institution>ITMO University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>12</day><month>09</month><year>2025</year></pub-date><volume>68</volume><issue>8</issue><fpage>696</fpage><lpage>703</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Национальный исследовательский университет ИТМО, 2025</copyright-statement><copyright-year>2025</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/401">https://pribor.ifmo.ru/jour/article/view/401</self-uri><abstract><p>Рассматривается контрольный элемент автоколлимационной системы (отражатель), представляющий собой зеркальный тетраэдр, нижняя грань которого заменена на цилиндрическую поверхность, при этом угол между плоскими гранями не равен 90°. Синтезирована математическая модель данного отражателя, описывающая изменение изображения в зависимости от углов поворота. Проанализирована возможность применения модели для измерения характерных параметров изображения. Построена компьютерная модель автоколлимационной системы (автоколлиматор АКТ-60) в средстве программного обеспечения Zemax. Представлен алгоритм измерения углов поворота контрольного элемента, основанный на определении характерных параметров изображения. На основании результатов моделирования с помощью метода наложения доказана согласованность математической и компьютерной моделей. Полученные результаты могут быть применены в системах, требующих точного углового позиционирования элементов, например при исследовании прогибов и деформаций экспериментальных конструкций, установке и сборке крупногабаритных частей изделий, монтаже авиационных и корабельных стапелей.</p></abstract><trans-abstract xml:lang="en"><p>The control element of the autocollimation system (reflector) is considered, which is a mirror tetrahedron, the lower face of which is replaced by a cylindrical surface, while the angle between the flat faces is not equal to 90 °. A mathematical model of this reflector is synthesized, describing the image change depended on the rotation angles. The possibility of using the model to measure characteristic image parameters is analyzed. A computer model of the autocollimation system (ACT-60 autocollimator) is created with Zemax software tool. An algorithm for measuring the rotation angles of a control element based on determining the characteristic image parameters is presented. Based on the simulation results, the consistency of mathematical and computer models is proved using the overlay method. The results obtained can be applied in systems requiring precise angular positioning of elements, for example, in the study of deflections and deformations of experimental structures, installation and assembly of large-sized parts of products, installation of aircraft and ship slipways.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>контрольный элемент</kwd><kwd>автоколлимационная система</kwd><kwd>цилиндрическая грань</kwd><kwd>трехкоординатные измерения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>control element</kwd><kwd>autocollimation system</kwd><kwd>cylindrical surface</kwd><kwd>three-dimensional positioning</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">Nogin A. A., Konyakhin I. A. The Position Monitoring Robotic Platforms of the Radiotelescope Elements on Base of Autocollimation Sensors // Studies in Systems, Decision and Control. 2019. Vol. 174. 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