星载高精度伞状天线展开过程运动及受力分析  

Force and Dynamic Analysis of Deployable Mechanism of High Precision Space Umbrella Antenna

作　　者：师甜[1] 王波[1] 华岳 管乐超 SHI Tian;WANG Bo;HUA Yue;GUAN Yuechao(China Academy of Space Technology(Xi’an ),Xi’an 710000,China)

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2019年第2期58-61,共4页Space Electronic Technology

摘　　要：伞状天线是目前大型可展开天线的一种主流构型。由于天线口径大,天线在卫星发射阶段处于收拢状态;卫星发射至指定轨道后,天线展开至工作状态。展开机构是伞状天线展开与收拢的执行机构,其展开与收拢过程中关键零部件的运动精度及受力情况直接决定了天线展开到位精度和天线型面在轨热变形,对最终天线在轨型面精度起决定性作用。文章以国内某星载高精度伞状天线展开机构为研究对象,结合天线展开机构各运动部件参数,利用解析的方法获得展开机构运动方程;通过对方程进行分析,得到展开机构各关键部件在天线展开过程中的运动情况、受力情况及天线理论展开时间,为天线最终在轨展开时间的制定及展开过程中关键零部件的受力控制提供理论依据。Precision umbrella antenna is tightly furled and installed on the satellite platform when the satellite launching, after the satellite in place, antenna need to expand into working condition. For the functional requirements, a high-precision deployable mechanism of umbrella antenna was designed. The deployable mechanism generate torque to achieve antenna ribs expand and furled. The motion precision and the stress of the components directly determine the precision of the umbrella antenna after the antenna is deployed. This paper takes mechanism of umbrella antenna as the research object, the motion precision and the stress of the key components during the movements are analyzed.

关 键 词：伞状天线 展开机构 受力分析 动态分析 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计]