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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">uprinmatus</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Юго-Западного государственного университета. Серия: Управление, вычислительная техника, информатика. Медицинское приборостроение</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Southwest State University. Series: IT Management, Computer Science, Computer Engineering. Medical Equipment Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-1536</issn><publisher><publisher-name>Юго-Западный государственный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21869/2223-1536-2025-15-2-58-73</article-id><article-id custom-type="elpub" pub-id-type="custom">uprinmatus-309</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>МЕХАТРОНИКА, РОБОТОТЕХНИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MECHATRONICS, ROBOTICS</subject></subj-group></article-categories><title-group><article-title>О влиянии неточностей изготовления конструктивных элементов пьезопреобразователя на длительность акустического зондирующего импульса</article-title><trans-title-group xml:lang="en"><trans-title>On the influence of manufacturing inaccuracies of the structural elements of a piezoelectric transducer on the duration  of an acoustic probing pulse</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5033-344X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коновалов</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Konovalov</surname><given-names>S. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коновалов Сергей Ильич, доктор технических наук, профессор</p><p>ул. Профессора Попова, д. 5 Ф, г. Санкт-Петербург 197022</p></bio><bio xml:lang="en"><p>Sergey I. Konovalov, Doctor of Sciences (Engineering), Professor</p><p>5/F Professora Popova Str., St. Petersburg 197022</p></bio><email xlink:type="simple">sikonovalov.eut@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-0018-6810</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вечёра</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Vechera</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вечёра Михаил Сергеевич, аспирант</p><p>ул. Профессора Попова, д. 5 Ф, г. Санкт-Петербург 197022</p></bio><bio xml:lang="en"><p>Mikhail S. Vechera, Post-Graduate Student</p><p>5/F Professora Popova Str., St. Petersburg 197022</p></bio><email xlink:type="simple">vechiora.mihail@yandex.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/0000-0002-0155-2718</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коновалов</surname><given-names>Р. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Konovalov</surname><given-names>R. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коновалов Роман Сергеевич, кандидат технических наук, доцент, заведующий кафедрой электроакустики и ультразвуковой техники; доцент</p><p>ул. Профессора Попова, д. 5 Ф, г. Санкт-Петербург 197022</p><p>пр-т Московский, д. 9, г. Санкт-Петербург 190031</p></bio><bio xml:lang="en"><p>Roman S. Konovalov, Candidate of Sciences (Engineering), Associate Professor, Head of the Department of Electroacoustics and Ultrasound Technology; Associate Professor</p><p>5/F Professora Popova Str., St. Petersburg 197022</p><p>9 Moskovsky Ave., St. Petersburg 190031</p></bio><email xlink:type="simple">rskonovalov@etu.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7386-7233</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Цаплев</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsaplev</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Цаплев Валерий Михайлович, доктор технических наук, профессор</p><p>ул. Профессора Попова, д. 5 Ф, г. Санкт-Петербург 197022</p></bio><bio xml:lang="en"><p>Valery M. Tsaplev, Doctor of Sciences (Engineering), Professor</p><p>5/F Professora Popova Str., St. Petersburg 197022</p></bio><email xlink:type="simple">valery@convergences-fr.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/0000-0003-1075-3420</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Юлдашев</surname><given-names>З. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Yuldashev</surname><given-names>Z. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юлдашев Зафар Мухамедович, доктор технических наук, профессор, заведующий кафедрой биотехнических систем</p><p>ул. Профессора Попова, д. 5 Ф, г. Санкт-Петербург 197022</p></bio><bio xml:lang="en"><p>Zafar M. Yuldashev, Doctor of Sciences (Engineering), Professor, Head of the Department of Biotechnical Systems</p><p>5/F Professora Popova Str., St. Petersburg 197022</p></bio><email xlink:type="simple">yuld@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный электротехнический университет «ЛЭТИ» им. В. И. Ульянова (Ленина)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg Electrotechnical University "LETI"</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный электротехнический университет «ЛЭТИ» им. В. И. Ульянова (Ленина); Петербургский государственный университет путей сообщения Императора Александра I</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg Electrotechnical University "LETI"; Emperor Alexander I St. Petersburg State Transport University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>02</day><month>08</month><year>2025</year></pub-date><volume>15</volume><issue>2</issue><fpage>58</fpage><lpage>73</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Коновалов С.И., Вечёра М.С., Коновалов Р.С., Цаплев В.М., Юлдашев З.М., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Коновалов С.И., Вечёра М.С., Коновалов Р.С., Цаплев В.М., Юлдашев З.М.</copyright-holder><copyright-holder xml:lang="en">Konovalov S.I., Vechera M.S., Konovalov R.S., Tsaplev V.M., Yuldashev Z.M.</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://uprinmatus.elpub.ru/jour/article/view/309">https://uprinmatus.elpub.ru/jour/article/view/309</self-uri><abstract><p>Цель исследования – определить длительность излучаемых пьезоэлектрическим преобразователем акустических сигналов при малых отклонениях (увеличении или уменьшении) толщины согласующего слоя и его удельного акустического сопротивления от оптимальных значений. Методы. Объект исследований −  пьезоэлектрические преобразователи пластинчатого типа, нагруженные на водную среду. Для расчета использован метод эквивалентных схем пьезопреобразователей и спектральный метод на основе преобразований Фурье. Методом эквивалентных схем определются частотные характеристики пьезопреобразователей. Для импульса электрического возбуждения конкретной формы с помощью прямого преобразования Фурье определяется его спектральная функция. Обратным преобразованием Фурье находится вид зондирующего акустического  импульса. На основании анализа импульсного режима работы пьезопреобразователей определяются зависимости длительностей зондирующего сигнала от оптимальных значений волновой толщины согласующего слоя и его удельного акустического сопротивления. Результаты. На основе анализа работы пьезопреобразователей выделены основные причины нарушения идентичности их свойств. Для различных степеней демпфирования пьезопреобразователя определены формы зондирующих сигналов, излучаемых в воду. Проведена оценка влияния неточностей изготовления слоя на длительность зондирующего сигнала. Определена длительность излучаемых пьезоэлектрическим преобразователем акустических сигналов при малых отклонениях (увеличении или уменьшении) толщины согласующего слоя и его удельного акустического сопротивления от оптимальных значений.Заключение. Полученные результаты предназачены для оценки качества заготовок конструктивных элементов пьезопреобразователей при их изготовлении малыми партиями, когда неизбежны погрешности соблюдения толщины согласующего слоя и значения его удельного акустического сопротивления как внутри одной партии, так и между партиями.</p></abstract><trans-abstract xml:lang="en"><p>The purpose of the research is  to determine determine  the duration of acoustic signals emitted by a piezoelectric transducer with small deviations (increase or decrease) in the thickness of the matching layer and its specific acoustic resistance from the optimal values. Methods. The object of the study is plate-type piezoelectric transducers loaded onto an water medium. The calculation was performed using  the equivalent circuit method of piezoelectric  transducers and  the spectral method based on Fourier transforms. The equivalent circuit method is used to determine the frequency characteristics of piezoelectric transducers. For an electrical excitation pulse of a specific shape, its spectral function is determined using the direct Fourier transform. The type of the probing acoustic pulse is found using the inverse Fourier transform. Based on the analysis of the pulsed operating mode of piezoelectric transducers, the dependences of the probing signal durations on the optimal values of the wave thickness of the matching layer and its specific acoustic resistance are determined.  Results. Based on the analysis of the operation of piezoelectric transducers, the main causes of violation of the identity of their properties are  identified. For different degrees of damping of  the piezoelectric  transducer, the shapes of the probing signals radiated into water are determined. The effect of inaccuracies in the manufacture of the layer on the  duration of the probing signal is assessed. The duration of acoustic signals emitted by a piezoelectric  transducer  is determined with small deviations (increase or decrease) in the thickness of the matching layer and its specific acoustic resistance from the optimal values. Conclusion. The obtained results are intended to assess the quality of blanks of structural elements of piezoelectric transducers during their manufacture in small batches, when errors in maintaining the thickness of the matching layer and the value of its specific acoustic resistance are inevitable both within one batch and between batches.  </p></trans-abstract><kwd-group xml:lang="ru"><kwd>неразрушающий контроль</kwd><kwd>пьезоэлектрический преобразователь</kwd><kwd>зондирующий акустический импульс</kwd></kwd-group><kwd-group xml:lang="en"><kwd>non-destructive testing</kwd><kwd>piezoelectric transducer</kwd><kwd>acoustic pulse probe</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">Uchino K. Piezoelectric Devices for Sustainability Technologies // Encyclopedia of Sustainable Technologies (Second Edition). 2024. Vol. 3. 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