Abstract
A space deployable mechanism with high unfolding ratio, strong scalability, and stable structure has potential applications in the aerospace field. A pyramid basic deployable unit with good composability and expandability is studied, which can be used to construct large-scale spatial deployable mechanisms. Firstly, the principle of basic unit folding is analyzed, and the configuration design of the basic unit is carried out using the spatial multi closed-loop mechanism configuration synthesis method with added constraint branches. Then, the screw theory and the link dismantling method are used to analyze the DOF of the pyramid unit, and geometric derivatives are applied to solve the motion characteristics of the unit nodes. Furthermore, three network expansion methods for pyramid unit mechanisms are proposed, resulting in three large-scale expandable spatial mechanisms. Finally, three-dimensional models of three types of extension mechanisms are established and the motion simulation analysis are conducted to verify the effectiveness of the configuration design and extension methods. The research results can provide theoretical reference for the design and application of spatial deployable mechanisms with large aperture and high unfolding ratio.
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Acknowledgements
This research has been supported by the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20220649), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 23KJB460010) and the Key R&D Project of Jiangsu Province (Grant No. BE2022062).
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Guo, J., He, J., Zhang, G. (2023). A Single-DOF Quadrilateral Pyramid Deployable Unit and Its Networking Mechanism. In: Yang, H., et al. Intelligent Robotics and Applications. ICIRA 2023. Lecture Notes in Computer Science(), vol 14269. Springer, Singapore. https://doi.org/10.1007/978-981-99-6489-5_50
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DOI: https://doi.org/10.1007/978-981-99-6489-5_50
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