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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">caht</journal-id><journal-title-group><journal-title xml:lang="ru">Научный вестник МГТУ ГА</journal-title><trans-title-group xml:lang="en"><trans-title>Civil Aviation High Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-0619</issn><issn pub-type="epub">2542-0119</issn><publisher><publisher-name>Moscow State Technical University of Civil Aviation (MSTU CA)</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">caht-302</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Условие плоскости для систем с двумя входами</article-title><trans-title-group xml:lang="en"><trans-title>Flatness conditions for systems with two inputs</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>Четвериков</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Chetverikov</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="en"><p>Sci.D. in physical and mathematical sciences, professor of the Department of Mathematical Modelling</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>MSTU named after Bauman</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>07</day><month>11</month><year>2016</year></pub-date><issue>220</issue><fpage>28</fpage><lpage>38</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Четвериков В.Н., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Четвериков В.Н.</copyright-holder><copyright-holder xml:lang="en">Chetverikov V.N.</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://avia.mstuca.ru/jour/article/view/302">https://avia.mstuca.ru/jour/article/view/302</self-uri><abstract><p>Изучаются плоские системы с двумя входами. Наш подход основан на обратимых дифференциальных операторах и деформации структур на диффеотопе систем с управлением. Описаны обратимые дифференциальные операторы размерности . Введено понятие веса для B-базиса. Если вес B-базиса нулевой, то проверка плоскости тривиальна. Минимальное количество плоских выходов оценивается на основании порядка соответствующего обратимого дифференциального оператора, линеаризующего систему с управлением. Минимальный порядок обратимого дифференциального оператора, линеаризующего систему, оценивается через порядок его деформации.</p></abstract><trans-abstract xml:lang="en"><p>Flat systems with 2 inputs are investigated. Our approach is based on invertible differential operators and deformations of structures on diffieties of control systems. Invertible differential operators of size are described. The order of a flat output is estimated by the order of the corresponding invertible differential operator linearizing the control system. The minimal order of invertible differential operator linearizing the system is estimated by the order of its deformation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Nonlinear systems</kwd><kwd>infinite-order prolongations</kwd><kwd>flat control systems</kwd><kwd>dynamic feedback linearization</kwd><kwd>invertible differential operators</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Nonlinear systems</kwd><kwd>infinite-order prolongations</kwd><kwd>flat control systems</kwd><kwd>dynamic feedback linearization</kwd><kwd>invertible differential operators</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">Fliess M., Lévine J., Martin Ph. and Rouchon P. C.R. Acad. Sci. Paris, 1992, I-315, pp. 619-624.</mixed-citation><mixed-citation xml:lang="en">Fliess M., Lévine J., Martin Ph. and Rouchon P. C.R. Acad. Sci. 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