Design and analysis of a scissors double-ring truss deployable mechanism for space antennas
Design and analysis of a scissors double-ring truss deployable mechanism for space antennas
复制标题
空间天线剪刀式双环桁架展开机构设计与分析
DOI：
10.1016/j.ast.2019.105357
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发表时间：
2019-10
影响因子：
5.6
通讯作者：
Yongsheng Zhao
中科院分区：
文献类型：
--
作者：
Bo Han;Yundou Xu;Jiantao Yao;Dong Zheng;Yongjie Li;Yongsheng Zhao
天线反射面是航天器雷达天线的重要组成部分，空间展开机构对天线反射面的轨道展开和稳定支撑起着重要作用。为了提高环桁架式可展开天线机构在大直径情况下的结构刚度，提出了一种剪叉式双环桁架可展开机构。首先，对一般环桁架式可展开天线进行结构分析，构造剪刀式双环桁架式可展开机构，并将整个机构分解为多个机构单元。基于螺旋理论对剪叉式双环桁架展开机构进行了自由度分析，结果表明该机构只有一个自由度。基于螺旋理论，分析了剪叉式双环桁架展开机构的运动学特性，得到了机构各构件的速度和加速度，以及机构的雅可比矩阵。最后，基于牛顿-欧拉方程和虚功原理，建立了整个机构的动力学模型，并进行了数值计算和仿真验证，结果验证了理论分析的正确性。本文提出的剪叉式双环桁架展开机构可以很好地应用于空间天线领域，文中采用的基于螺旋理论的理论分析方法可以为其他空间展开机构的研究提供借鉴。
Space deployable mechanism plays an important role in the orbital deployment and stable support of the antenna reflection surface, which is an important component for the spacecraft radar antenna. In order to improve the structural stiffness of the ring truss deployable antenna mechanism when it has a large diameter, a scissors double-ring truss deployable mechanism is proposed in this paper. First, structure analysis of general ring truss deployable antenna and construction of the scissors double-ring truss deployable mechanism are conducted, and the whole mechanism is decomposed to a plurality of mechanism units. Then, degree of freedom (DOF) of the scissors double-ring truss deployable mechanism is analyzed based on screw theory, the result showed that it has only one DOF. Furthermore, based on screw theory, kinematic characteristics of the scissors double-ring truss deployable mechanism are examined, velocities and accelerations of the components in the mechanism are obtained, as well as the Jacobian matrixes. Finally, based on Newton-Euler equation and the principle of virtual work, a dynamic model of the whole mechanism is established, numerical calculation and simulation verification are carried out, and the results verified the correctness of the theoretical analysis. The scissors double-ring truss deployable mechanism proposed in this paper can be well applied in the field of space antennas, and the theoretical analysis method based on screw theory used in this paper can provide insights into other spatial deployable mechanisms.
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影响因子：
1.4
作者：
Datashvili, L.;Endler, S.;Santiago-Prowald, J.
通讯作者：
Santiago-Prowald, J.
影响因子：
5.6
作者：
F. Guan;Lu Dai;M. Xia
通讯作者：
F. Guan;Lu Dai;M. Xia
影响因子：
1.4
作者：
J. Santiago-Prowald;H. Baier
通讯作者：
J. Santiago-Prowald;H. Baier
DOI：
10.1098/rspa.2007.0188
发表时间：
2008-05
期刊：
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
影响因子：
--
作者：
Yan Chen;Zhong You
通讯作者：
Yan Chen;Zhong You
影响因子：
4.7
作者：
Yao Chen;Linzi Fan;Jian Feng
通讯作者：
Yao Chen;Linzi Fan;Jian Feng