Design and analysis of a novel hinged boom based on cable drive
Design and analysis of a novel hinged boom based on cable drive
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DOI：
10.1016/j.cja.2021.04.006
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发表时间：
2021-05
影响因子：
5.7
通讯作者：
Kaijie Dong;Duanling Li;Lin Qiuhong;Qiu Hui;Cong Qiang;X. Li
中科院分区：
文献类型：
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作者：
Kaijie Dong;Duanling Li;Lin Qiuhong;Qiu Hui;Cong Qiang;X. Li
铰接臂在天体物理任务中应用广泛，但由于其通常由弹簧驱动，其轨迹和展开速度难以控制，限制了其在狭窄空间中的应用。因此，高度需要一种新型铰接臂以实现运动可控性。通过索传动回路与二元连杆在拓扑学上的等效替代，提出了基于单开链加法的索传动单自由度链型综合方法。根据臂架的结构设计，提出了一种新型的缆索驱动铰接臂架，以实现臂架同步。然后，为了便于预紧，采用了在索端施加预紧力并测量预紧力的方法，推导了初始预紧力与目标预紧力之间的关系。通过对索力分布的分析，提出了一种新的索力刚度模型，从而得到了索力刚度方程。最后，对铰接臂架进行了动力学仿真分析和失重展开实验，验证了其可靠性。该研究为单自由度索传动链的型综合提供了一种新的途径，为索传动链的刚度分析提供了一种新的模型。此外，本研究所得到的新型缆索驱动铰接臂架在航空航天领域具有良好的应用前景。
Hinged booms are widely used in astrophysics missions; however, the trajectory and deployment velocity are difficult to control because they are usually driven by springs, which limits their application in narrow spaces. Thus, a novel hinged boom is highly required to achieve motion controllability. Through an equivalent substitution between the cable drive loop and the binary link in topology, a type synthesis method for the cable-driven single-degree-of-freedom chain is proposed based on the single-open-chain (SOC) adding method. According to the configuration design, a novel cable-driven hinged boom is proposed, aiming to achieve boom synchronism. Then, to preload easily, a method that preload is applied and measured at the cable ends is adopted and the relationship between the initial preload and the target preload is deduced. By analyzing the distribution of cable tension, a new stiffness model is proposed thus a stiffness equation is obtained. Finally, the dynamic simulation analysis and zero-gravity deployment experiment of the hinged boom is carried out to verify its reliability. This research provides a new way for the type synthesis of cable-driven single-degree-of-freedom chain and a new model for analyzing cable-driven stiffness. Moreover, the novel cable-driven hinged boom obtained in this study can be well-applied in the field of aerospace.