<article 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" article-type="research-article" dtd-version="1.2" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">Differential Equations</journal-id><journal-title-group><journal-title>Differential Equations</journal-title></journal-title-group><issn publication-format="print">0374-0641</issn><issn publication-format="electronic">3034-5030</issn><publisher><publisher-name>Russian Academy of Science</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.7868/S3034503025030078</article-id><title-group><article-title>ON SINGULARITIES OF A-ORBITAL FEEDBACK LINEARIZATION OF SINGLE-INPUT AFFINE CONTROL SYSTEMS</article-title><trans-title-group xml:lang="ru"><trans-title>ОБ ОСОБЕННОСТЯХ A-ОРБИТАЛЬНОЙ ЛИНЕАРИЗАЦИИ АФФИННЫХ СИСТЕМ С ОДНИМ УПРАВЛЕНИЕМ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Fetisov</surname><given-names>D. A</given-names></name><name xml:lang="ru"><surname>Фетисов</surname><given-names>Д. А </given-names></name></name-alternatives><email>dfetisov@yandex.ru</email><xref ref-type="aff" rid="aff-1"></xref><xref ref-type="aff" rid="aff-2"></xref></contrib></contrib-group><aff-alternatives id="aff-1"><aff><institution xml:lang="ru">Московский государственный технический университет имени Н.Э. Бауман</institution><institution xml:lang="en">Bauman Moscow State Technical University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff><institution xml:lang="ru"></institution><institution xml:lang="en"></institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-03-17" publication-format="electronic"><day>17</day><month>03</month><year>2025</year></pub-date><volume>61</volume><issue>3</issue><fpage>374</fpage><lpage>393</lpage><abstract xml:lang="en"><p>For single-input affine control systems, we address the problem of A-orbital feedback linearization around singular points of the derived flag of the distribution associated with the control system. By a singular point of a derived flag we mean a point such that at least one of the elements of the derived flag in any neighborhood of this point is not a distribution of constant rank. We prove a local necessary and sufficient condition for A-orbital feedback equivalence of a single-input affine control system to a linear controllable system considered in a neighbourhood of the zero equilibrium point.</p></abstract><trans-abstract xml:lang="ru"><p>Для аффинных систем с одним управлением рассматривается проблема A-орбитальной линеаризации в окрестности особых точек производного флага распределения, ассоциированного с системой. Под особой точкой производного флага понимается такая точка, что хотя бы один из элементов производного флага в любой её окрестности не является распределением постоянного ранга. Доказывается локальное необходимое и достаточное условие A-орбитальной эквивалентности по обратной связи и состоянию аффинной системы с одним управлением линейной управляемой системе, рассматриваемой в окрестности нулевого положения равновесия.</p></trans-abstract><kwd-group xml:lang="en"><kwd>аффинная система орбитальная линеаризация масштабирование времени</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>аффинная система орбитальная линеаризация масштабирование времени</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>B1</label><citation-alternatives><mixed-citation xml:lang="ru">Brockett, R.W. Feedback invariants for nonlinear systems / R.W. Brockett // Proc. of the 1978 IFAC Congress, Helsinki, Finland. — Oxford : Pergamon Press, 1978. — P. 1115–1120.</mixed-citation><mixed-citation xml:lang="en"></mixed-citation></citation-alternatives></ref><ref id="B2"><label>B2</label><citation-alternatives><mixed-citation xml:lang="ru">Jakubczyk, B. 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