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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.25.490-500</article-id><article-id custom-type="elpub" pub-id-type="custom">novtexmech-1616</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>ДИНАМИКА, БАЛЛИСТИКА И УПРАВЛЕНИЕ ДВИЖЕНИЕМ ЛЕТАТЕЛЬНЫХ АППАРАТОВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>DYNAMICS, BALLISTICS AND CONTROL OF AIRCRAFT</subject></subj-group></article-categories><title-group><article-title>О робастной стабилизации движения квадрокоптера с подвешенным грузом</article-title><trans-title-group xml:lang="en"><trans-title>On Robust Stabilization of Motion of a Quadrotor with Slung Load</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>Голуб</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Holub</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канд. физ.-мат. наук, ст. науч. сотр.</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">holub.imech@gmail.com</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>Зудов</surname><given-names>В. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Zudov</surname><given-names>V. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аспирант, вед. инж.</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">zudov.valerii@gmail.com</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>Локшин</surname><given-names>Б. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Lokshin</surname><given-names>B. Ya.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канд. физ.-мат. наук, вед. науч. сотр.</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">blokshin@imec.msu.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>Селюцкий</surname><given-names>Ю. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Selyutskiy</surname><given-names>Y. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канд. физ.-мат. наук, вед. науч. сотр.</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">seliutski@imec.msu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>НИИ механики МГУ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Mechanics of Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>05</day><month>09</month><year>2024</year></pub-date><volume>25</volume><issue>9</issue><fpage>490</fpage><lpage>500</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Commercial Publisher «New Technologies», 2024</copyright-statement><copyright-year>2024</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/1616">https://mech.novtex.ru/jour/article/view/1616</self-uri><abstract><p>Одной из важных задач, которую выполняют квадрокоптеры, является транспортировка различных грузов. В случае если груз подвешен к квадрокоптеру и может двигаться относительно корпуса квадрокоптера, это движение должно учитываться в управлении системой, в частности, в целях подавления и предотвращения нежелательных колебаний груза.</p><p>В работе рассматривается механическая система, состоящая из квадрокоптера и груза, подвешенного к нему на невесомом стержне. Предполагается, что площадь поперечного сечения груза достаточно велика, так что аэродинамической силой, действующей на него, пренебречь нельзя. Известно, что для целого ряда форм оболочки груза эта аэродинамическая сила не сводится только к силе лобового сопротивления, но содержит и компоненту, перпендикулярную лобовому сопротивлению — подъемную силу. Для описания указанных сил используется квазистатический подход.</p><p>В то же время, точная информация об аэродинамических силах для каждого переносимого груза, вообще говоря, недоступна. Однако известно, что значения аэродинамических коэффициентов для достаточно широкого класса тел принадлежат определенной области. Обсуждается вопрос построения управления квадрокоптером, обеспечивающего робастную стабилизацию равномерного подъема и спуска системы в условиях неполной информации об аэродинамическом воздействии. Предложен алгоритм построения управления квадрокоптером для робастной стабилизации равномерного вертикального подъема и спуска системы в целом. Показано, что это управление обеспечивает стабилизацию целевого режима в достаточно широком диапазоне параметров системы. Определены ограничения на целевую скорость движения, при превышении которых робастная стабилизация становится невозможной.</p></abstract><trans-abstract xml:lang="en"><p>One of the important tasks that can be performed by quadrotors is the transportation of various payloads. If the load is suspended from the quadrotor and can move relative to the quadrotors body, this motion must be taken into account in the control system, in particular, in order to suppress and prevent unwanted oscillations of the load. In the present paper, a mechanical system is considered that consists of a quadrotor and a load suspended to it with a weightless rod. It is assumed that the cross-sectional area of the load is large enough so that the aerodynamic forces acting on it cannot be neglected. It is known that for a number of shapes of payload casing, this aerodynamic force is not reduced only to the drag force, but also contains a component orthogonal to the drag force, that is, the lift force. In order to these forces, the quasi-steady approach is used. At the same time, accurate information about the aerodynamic capabilities for each particular payload is, generally speaking, not available. However, it is known that the values of aerodynamic coefficients for a fairly wide class of body shapes are lie in a specific range. Here we discuss the problem of developing the quadrotor control that would ensure robust stabilization of the ascent and descent of the system in the conditions of incomplete information about the aerodynamic load. A method is proposed for constructing the quadrotor control for robust stabilization of uniform vertical ascent and descent of the system as a whole. It is shown that this control ensures stabilization of the target mode within a fairly wide range of system parameters. Restrictions on the target speed of quadrotor motion are determined, violation of which makes the robust stabilization impossible.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>управление</kwd><kwd>стабилизация</kwd><kwd>колебания</kwd><kwd>квадрокоптер</kwd><kwd>аэродинамические силы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>control</kwd><kwd>stabilization</kwd><kwd>oscillations</kwd><kwd>quadrotor</kwd><kwd>aerodynamic forces</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Российского научного фонда (проект 24-29-00151).</funding-statement><funding-statement xml:lang="en">The research was supported by the Russian Science Foundation (Project No. 24-29-00151).</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">Hoffmann G. M., Huang H., Waslander S. L., Tomli C. J. Quadrotor helicopter flight dynamics and control: Theory and experiment // AIAA Guidance, Navigation, and Control Conference. 2007. Vol. 2. P. 20.</mixed-citation><mixed-citation xml:lang="en">Hoffmann G. M., Huang H., Waslander S. L., Tomli C. J. Quadrotor helicopter flight dynamics and control: Theory and experiment, AIAA Guidance, Navigation, and Control Conference, 2007, 20 p.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Jung S., Kim H. Analysis of Amazon Prime Air UAV Delivery Service // J. Knowl. Inf. Technol. Syst. 2017. Vol. 12, N. 2. P. 253—266. DOI: 10.34163/jkits.2017.12.2.005.</mixed-citation><mixed-citation xml:lang="en">Jung S., Kim H. Analysis of Amazon Prime Air UAV Delivery Service, J. Knowl. Inf. Technol. Syst., 2017, vol. 12, no. 2, pp. 253—266, DOI: 10.34163/jkits.2017.12.2.005.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Emelianov S., Bulgakow A., Sayfeddine D. Aerial laser inspection of buildings facades using quadrotor // Procedia Engineering. 2014. Vol. 85. P. 140—146. DOI: 10.1016/j.proeng.2014.10.538.</mixed-citation><mixed-citation xml:lang="en">Emelianov S., Bulgakow A., Sayfeddine D. Aerial laser in- spection of buildings facades using quadrotor, Procedia Enginee ring, 2014, vol. 85, pp. 140—146, DOI: 10.1016/j.proeng.2014.10.538.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Chandra A., Lal P. P. S. Higher Order Sliding Mode Controller for a Quadrotor UAV with a Suspended Load // IFAC-PapersOnLine. 2022. Vol. 55, N. 1. P. 610—615. DOI: 10.1016/j.ifacol.2022.04.100.</mixed-citation><mixed-citation xml:lang="en">Chandra A., Lal P. P. S. Higher Order Sliding Mode Controller for a Quadrotor UAV with a Suspended Load, IFAC-PapersOnLine, 2022, vol. 55, no. 1, pp. 610—615, DOI: 10.1016/j.ifacol.2022.04.100.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Hu D., Pei Z., Tang Z. Automatic control optimization for largeload plant-protection quadrotor // Appl. Sci. 2021. Vol. 11, N. 9. P. 4058. DOI: 10.3390/app11094058.</mixed-citation><mixed-citation xml:lang="en">Hu D., Pei Z., Tang Z. Automatic control optimization for large-load plant-protection quadrotor, Appl. Sci., 2021, vol. 11, no. 9, pp. 4058, DOI: 10.3390/app11094058.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Li J., Cao D., Pan K. Hydrodynamics with complex boundary motions by non-inertial SPH method and its application in attitude-liquid-control coupled dynamics of a liquid-filled quadrotor UAV // Mech. Syst. Signal Process. 2021. Vol. 163. P. 108066. DOI: 10.1016/j.ymssp.2021.108066.</mixed-citation><mixed-citation xml:lang="en">Li J., Cao D., Pan K. Hydrodynamics with complex boundary motions by non-inertial SPH method and its application in attitude-liquid-control coupled dynamics of a liquidfilled quadrotor UAV, Mech. Syst. Signal Process, 2021, vol. 163, pp. 108066, DOI: 10.1016/j.ymssp.2021.108066.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Bonyan Khamseh H., Janabi-Sharifi F., Abdessameud A. Aerial manipulation—A literature survey // Rob. Auton. Syst. 2018. Vol. 107. P. 221—235. DOI: 10.1016/j.robot.2018.06.012.</mixed-citation><mixed-citation xml:lang="en">Bonyan Khamseh H., Janabi-Sharifi F., Abdessameud A. Aerial manipulation—A literature survey, Rob. Auton. Syst., 2018, vol. 107, pp. 221—235, DOI: 10.1016/j.robot.2018.06.012.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Caccavale F, Giglio G., Muscio G., Pierri F. Adaptive control for UAVs equipped with a robotic arm // IFAC Proceedings Volumes (IFAC-PapersOnline). 2014. Vol. 19. P. 11049—11054.</mixed-citation><mixed-citation xml:lang="en">Caccavale F., Giglio G., Muscio G., Pierri F. Adaptive control for UAVs equipped with a robotic arm, IFAC Proceedings Volumes, 2014, vol. 19, pp. 11049—11054.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Alvarez-Mu oz J. U., Escareno J., Marchand N., Guerrero-Castellanos J. F., Raharijaona T., Rakotondrabe M. Quaternion Modeling and Observer-based Torque Compensation of an Aerial Manipulator. 2018. Vol. 51, N. 13. P. 543—548. DOI: 10.1016/j.ifacol.2018.07.336.</mixed-citation><mixed-citation xml:lang="en">Alvarez-Muñoz J. U., Escareno J., Marchand N., Guerrero-Castellanos J. F., Raharijaona T., Rakotondrabe M. Quaternion Modeling and Observer-based Torque Compensation of an Aerial Manipulator, IFAC-PapersOnLine, 2018, vol. 51, no. 13, pp. 543—548, DOI: 10.1016/j.ifacol.2018.07.336.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Dalwadi N., Deb D., Muyeen S. M. Observer based rotor failure compensation for biplane quadrotor with slung load // Ain Shams Eng. J. 2022. Vol. 13, N. 6. P. 101748. DOI: 10.1016/j.asej.2022.101748.</mixed-citation><mixed-citation xml:lang="en">Dalwadi N., Deb D., Muyeen S. M. Observer based rotor failure compensation for biplane quadrotor with slung load, Ain Shams Eng. J., 2022, vol. 13, no. 6, pp. 101748, DOI: 10.1016/j.asej.2022.101748.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Omar H. M., Akram R., Mukras S. M. S., Mahvouz A. A. Recent advances and challenges in controlling quadrotors with suspended loads // Alexandria Engineering Journal. 2022. P. 253—270. DOI: 10.1016/j.aej.2022.08.001.</mixed-citation><mixed-citation xml:lang="en">Omar H. M., Akram R., Mukras S. M. S., Mahvouz A. A. Recent advances and challenges in controlling quadrotors with suspended loads, Alexandria Engineering Journal, 2022, pp. 253—270, DOI: 10.1016/j.aej.2022.08.001.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Guo M., Su Y., Gu D. Mixed H2/H∞ Tracking Control with Constraints for Single Quadcopter Carrying a Cable-suspended Payload // IFAC-PapersOnLine. 2017. Vol. 50, N. 1. P. 4869—4874. DOI: 10.1016/j.ifacol.2017.08.976.</mixed-citation><mixed-citation xml:lang="en">Guo M., Su Y., Gu D. Mixed H2/H∞ Tracking Control with Constraints for Single Quadcopter Carrying a Cablesuspended Payload, IFAC-PapersOnLine, 2017, vol. 50, no. 1, pp. 4869—4874, DOI: 10.1016/j.ifacol.2017.08.976.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Das H. Dynamic Inversion Control of Quadrotor with a Suspended Load. 2018. Vol. 51, N. 1. P. 172—177. DOI: 10.1016/j.ifacol.2018.05.030.</mixed-citation><mixed-citation xml:lang="en">Das H. Dynamic Inversion Control of Quadrotor with a Suspended Load, IFAC-PapersOnLine, 2018, vol. 51, no. 1, pp. 172—177, DOI: 10.1016/j.ifacol.2018.05.030.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Sekiguchi K., Eikyu W., Nonaka K. Feedback control for a drone with a suspended load via hierarchical linearization // J. Robot. Mechatronics. 2021. Vol. 33, N. 2. P. 274—282. DOI: 10.20965/jrm.2021.p0274.</mixed-citation><mixed-citation xml:lang="en">Sekiguchi K., Eikyu W., Nonaka K. Feedback control for a drone with a suspended load via hierarchical linearization, J. Robot. Mechatronics, 2021, vol. 33, no. 2, pp. 274—282, DOI: 10.20965/jrm.2021.p0274.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Kong L., Reis J., He W., Yu X., Silvestre C. On dynamic performance control for a quadrotor-slung-load system with unknown load mass // Automatica. 2024. Vol. 162. P. 111516. DOI: 10.1016/j.automatica.2024.111516.</mixed-citation><mixed-citation xml:lang="en">Kong L., Reis J., He W., Yu X., Silvestre C. On dynamic performance control for a quadrotor-slung-load system with unknown load mass, Automatica, 2024, vol. 162, pp. 111516, DOI: 10.1016/j.automatica.2024.111516.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Димова А. С., Котов К. Ю., Мальцев А. С., Семенюк Е. Д., Соболев М. А. Управление траекторным движением квадрокоптера при транспортировке груза на подвесе: эксперимент // Вестник НГУ. Серия: Информационные технологии. 2019. Т. 17, № 4. С. 46—56. DOI: 10.25205/1818-7900-2019-17-4-5-46-56.</mixed-citation><mixed-citation xml:lang="en">Dimova A. S., Kotov K. Yu., Maltsev A. S., Semenyuk E. D., Sobolev M. A. Control of the Trajectory Movement of a Quadrocopter during Transportation of Cargo on a Suspension: Experiment, Vestn. NSU. Ser. Inf. Technol., 2019, vol. 17, no. 4, pp. 46—56, DOI: 10.25205/1818-7900-2019-17-4-5-46-56 (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Asignacion A., Noda R., Nakata T., Tsubakino D., Liu H., Suzuki S. Accurate Wind Observation and Robust Control for Drones in the Field of Micro-meteorology // IFAC-PapersOnLine. 2023. Vol. 56, N. 2. P. 8616—8621. DOI: 10.1016/j.ifacol.2023.10.036.</mixed-citation><mixed-citation xml:lang="en">Sun L., Wang K., Mishamandani A. H. A., Zhao G., Huang H., Zhao X., Zhang B. A novel tension-based controller design for the quadrotor—load system, Control Eng. Pract., 2021, vol. 112, pp. 104818.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Bouaiss O., Mechgoug R., Taleb-Ahmed A., Brikel A. E. Robust trajectory tracking of quadrotors using adaptive radial basis function network compensation control // J. Franklin Inst. 2024. Vol. 361, N. 3. P. 1167—1185. DOI: 10.1016/j.jfranklin.2023.12.045.</mixed-citation><mixed-citation xml:lang="en">Bisgaard M., Bendtsen J. D., La Cour-Harbo A. Modeling of generic slung load system, J. Guid. Control. Dyn., 2009, vol. 32, no. 2, pp. 573—585, DOI: 10.2514/1.36539.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Guerrero-Sánchez M. E., Mercado-Ravell D. A., Lozano R., García-Beltrán C. D. Swing-attenuation for a quadrotor transporting a cable-suspended payload // ISA Trans. 2017. Vol. 68. P. 433—449. DOI: 10.1016/j.isatra.2017.01.027.</mixed-citation><mixed-citation xml:lang="en">Asignacion A., Noda R., Nakata T., Tsubakino D., Liu H., Suzuki S. Accurate Wind Observation and Robust Control for Drones in the Field of Micro-meteorology, IFAC-PapersOnLine, 2023, vol. 56, no. 2, pp. 8616—8621, DOI: 10.1016/j.ifacol.2023.10.036.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Sun L., Wang K., Mishamandani A. H. A., Zhao G., Huang H., Zhao X., Zhang B. A novel tension-based controller design for the quadrotor—load system // Control Eng. Pract. 2021. Vol. 112. P. 104818.</mixed-citation><mixed-citation xml:lang="en">Bouaiss O., Mechgoug R., Taleb-Ahmed A., Brikel A. E. Robust trajectory tracking of quadrotors using adaptive radial basis function network compensation control, J. Franklin Inst., 2024, vol. 361, no. 3, pp. 1167—1185, DOI: 10.1016/j.jfranklin.2023.12.045.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Bisgaard M., Bendtsen J. D., La Cour-Harbo A. Modeling of generic slung load system // J. Guid. Control. Dyn. 2009. Vol. 32, N. 2. P. 433—449. DOI: 10.2514/1.36539.</mixed-citation><mixed-citation xml:lang="en">Guerrero-Sánchez M. E., Mercado-Ravell D. A., Lozano R., García-Beltrán C. D. Swing-attenuation for a quadrotor transporting a cable-suspended payload, ISA Trans., 2017, vol. 68, pp. 433—449, DOI: 10.1016/j.isatra.2017.01.027.</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Куликов В. Е., Чукаева А. Н. Система управления квадрокоптером при транспортировке груза на внешней подвеске // Труды Московского Института Электромеханики и Автоматики. 2016. Т. 14. С. 2—16.</mixed-citation><mixed-citation xml:lang="en">Ubbink J. B., Engelbrecht J. A. A. Sequence-constrained trajectory planning and execution for a quadrotor UAV with suspended payload, IFAC-PapersOnLine, 2020, vol. 53, pp. 9405—9411, DOI: 10.1016/j.ifacol.2020.12.2410.</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Ubbink J. B., Engelbrecht J. A. A. Sequence-constrained trajectory planning and execution for a quadrotor UAV with suspended payload // IFAC-PapersOnLine. 2020. Vol. 53. P. 9405—9411. DOI: 10.1016/j.ifacol.2020.12.2410.</mixed-citation><mixed-citation xml:lang="en">Kulikov V. E., Chukaeva A. N. Quadrotor control system for transportation of cargo on external sling, Proceedings of the Moscow Institute of Electromechanics and Automation, 2016, vol. 14, pp. 2—16 (In Russian).</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Бакланов Ф. Ю., Морозов В. М. Стабилизация программного движения квадрокоптера // Известия Российской академии наук. Теория и системы управления. 2013. № 6. С. 114—121. DOI: 10.7868/s0002338813060036.</mixed-citation><mixed-citation xml:lang="en">Baklanov F. U., Morozov V. M. Stabilization of desired motion of a quadrotor helicopter, J. Comput. Syst. Sci. Int., 2013, vol. 52, no. 6, pp. 955—962, DOI: 10.1134/S1064230713060038.</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Aleksandrov A. Yu., Tikhonov A. A. On the attitude stabilization of a rigid body under control with distributed delay // Mechanics Based Design of Structures and Machines. 2021. Vol. 51, N. 4. P 2241—2250. DOI: 10.1080/15397734.2021.1891935.</mixed-citation><mixed-citation xml:lang="en">Aleksandrov A. Yu., Tikhonov A. A. On the attitude stabilization of a rigid body under control with distributed delay, Mechanics Based Design of Structures and Machines, 2021, vol. 51, no. 4, pp. 2241—2250, DOI: 10.1080/15397734.2021.1891935.</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Sarioglu M., Akansu Y. E., Yavuz T. Flow around a rotatable square cylinder-plate body // AIAA J. 2006. Vol. 44, N. 5. P. 1065—1072. DOI: 10.2514/1.18069.</mixed-citation><mixed-citation xml:lang="en">Sarioglu M., Akansu Y. E., Yavuz T. Flow around a rotatable square cylinder-plate body, AIAA J., 2006, vol. 44, no. 5, pp. 1065—1072, DOI: 10.2514/1.18069.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
