星载平面天线可展开支撑桁架机构设计与运动分析

Satellite planar antenna has been widely applied to observe earth. Deployable support structures are key components of satellite planar antenna for supporting and spreading antenna. With the improvement of observation resolution requirements, it is necessary to design deployable support structures with high-rigidity, large-scale and simple-motion. For the purposes, this paper presents two kinds deployable truss structures with single wing which can support four antenna panels, and proposes two kinds of synchronizing mechanisms which are optimized parametrically to reduce the number of power sources. Kinematics simulation is performed for the deployable support truss structures, and the results indicate that the deploying movement is smooth with two driving sources.