Dynamic analysis and deploying process control of large parabolic cylinder antennas
<p>The deployable parabolic cylindrical antenna, due to its large structural scale, complex transmission linkages, and multiple closed-loop constraints, endures significant differential loads on its structural components during the deployment process. This leads to substantial deformations or...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2025-06-01
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| Series: | Mechanical Sciences |
| Online Access: | https://ms.copernicus.org/articles/16/245/2025/ms-16-245-2025.pdf |
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| author | Z. Wang Z. Song J. Chen C. Chen H. Zhang J. Li |
| author_facet | Z. Wang Z. Song J. Chen C. Chen H. Zhang J. Li |
| author_sort | Z. Wang |
| collection | DOAJ |
| description | <p>The deployable parabolic cylindrical antenna, due to its large structural scale, complex transmission linkages, and multiple closed-loop constraints, endures significant differential loads on its structural components during the deployment process. This leads to substantial deformations or even damage to the structure. To enhance the reliability of the antenna's deployment and the load-bearing safety of its components, it is imperative to comprehensively identify the dynamic characteristics inherent in the control of the antenna deployment process. In this paper, a fast dynamic modeling method for large-scale, module-assembled, space deployable supporting structures is proposed. Based on this, an algorithm for solving high-dimensional differential equations which features polycondensation and recursion module by module is proposed. First, the dynamic and constraint equations are established for a large-scale deployable supporting structure with parabolic cylindrical surfaces which is divided into 25 sub-modules. Then, sub-modules are assembled to realize the fast dynamic modeling of the large-scale supporting structure. Further, an efficient recursive algorithm, which is solved module by module, is presented according to the concept of building dynamic equations in modularization. Finally, a nonlinear deployment control strategy based on velocity feedback is introduced to ensure stable deployment control over strongly nonlinear systems, such as the deployable supporting structure with parabolic cylindrical surfaces; moreover, ideal deployment control effects are achieved for such systems. The results indicate that the control method can reduce the peak velocity of the supporting structure during the deployment process from 5.508 to 0.0323 m s<span class="inline-formula"><sup>−1</sup></span> and that it improves the synchronicity of the antenna's supporting structure deployment by 69.49 %. This study provides a feasible implementation scheme for the dynamic characteristic analysis and deployable process control of back-shell truss antennas.</p> |
| format | Article |
| id | doaj-art-1124acdb3dc64f64a91ffe0704b1b645 |
| institution | DOAJ |
| issn | 2191-9151 2191-916X |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Mechanical Sciences |
| spelling | doaj-art-1124acdb3dc64f64a91ffe0704b1b6452025-08-20T03:07:27ZengCopernicus PublicationsMechanical Sciences2191-91512191-916X2025-06-011624526210.5194/ms-16-245-2025Dynamic analysis and deploying process control of large parabolic cylinder antennasZ. Wang0Z. Song1J. Chen2C. Chen3H. Zhang4J. Li5National Key Laboratory of Aerospace Mechanism, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, ChinaNational Key Laboratory of Aerospace Mechanism, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, ChinaNational Key Laboratory of Aerospace Mechanism, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, ChinaNational Key Laboratory of Aerospace Mechanism, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, ChinaAerospace System Engineering Shanghai, Shanghai, 201100, ChinaNational Key Laboratory of Aerospace Mechanism, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China<p>The deployable parabolic cylindrical antenna, due to its large structural scale, complex transmission linkages, and multiple closed-loop constraints, endures significant differential loads on its structural components during the deployment process. This leads to substantial deformations or even damage to the structure. To enhance the reliability of the antenna's deployment and the load-bearing safety of its components, it is imperative to comprehensively identify the dynamic characteristics inherent in the control of the antenna deployment process. In this paper, a fast dynamic modeling method for large-scale, module-assembled, space deployable supporting structures is proposed. Based on this, an algorithm for solving high-dimensional differential equations which features polycondensation and recursion module by module is proposed. First, the dynamic and constraint equations are established for a large-scale deployable supporting structure with parabolic cylindrical surfaces which is divided into 25 sub-modules. Then, sub-modules are assembled to realize the fast dynamic modeling of the large-scale supporting structure. Further, an efficient recursive algorithm, which is solved module by module, is presented according to the concept of building dynamic equations in modularization. Finally, a nonlinear deployment control strategy based on velocity feedback is introduced to ensure stable deployment control over strongly nonlinear systems, such as the deployable supporting structure with parabolic cylindrical surfaces; moreover, ideal deployment control effects are achieved for such systems. The results indicate that the control method can reduce the peak velocity of the supporting structure during the deployment process from 5.508 to 0.0323 m s<span class="inline-formula"><sup>−1</sup></span> and that it improves the synchronicity of the antenna's supporting structure deployment by 69.49 %. This study provides a feasible implementation scheme for the dynamic characteristic analysis and deployable process control of back-shell truss antennas.</p>https://ms.copernicus.org/articles/16/245/2025/ms-16-245-2025.pdf |
| spellingShingle | Z. Wang Z. Song J. Chen C. Chen H. Zhang J. Li Dynamic analysis and deploying process control of large parabolic cylinder antennas Mechanical Sciences |
| title | Dynamic analysis and deploying process control of large parabolic cylinder antennas |
| title_full | Dynamic analysis and deploying process control of large parabolic cylinder antennas |
| title_fullStr | Dynamic analysis and deploying process control of large parabolic cylinder antennas |
| title_full_unstemmed | Dynamic analysis and deploying process control of large parabolic cylinder antennas |
| title_short | Dynamic analysis and deploying process control of large parabolic cylinder antennas |
| title_sort | dynamic analysis and deploying process control of large parabolic cylinder antennas |
| url | https://ms.copernicus.org/articles/16/245/2025/ms-16-245-2025.pdf |
| work_keys_str_mv | AT zwang dynamicanalysisanddeployingprocesscontroloflargeparaboliccylinderantennas AT zsong dynamicanalysisanddeployingprocesscontroloflargeparaboliccylinderantennas AT jchen dynamicanalysisanddeployingprocesscontroloflargeparaboliccylinderantennas AT cchen dynamicanalysisanddeployingprocesscontroloflargeparaboliccylinderantennas AT hzhang dynamicanalysisanddeployingprocesscontroloflargeparaboliccylinderantennas AT jli dynamicanalysisanddeployingprocesscontroloflargeparaboliccylinderantennas |