星载固面可展开天线反射器展开状态模态试验研究  

Modal Test Research of the Deployable Rigid Reflector for Satellite Antenna

作　　者：方永刚[1] 于新战[1] 王磊[1] 薛永刚[1] 

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》2014年第2期32-35,共4页Space Electronic Technology

摘　　要：文章以某卫星固面可展开天线反射器为研究对象,详细介绍了利用经典的锤击法对其展开状态进行模态试验研究的方法、步骤、结论。由于地面试验存在重力影响或部件不全等原因,导致反射器地面试验状态与在轨工作状态的边界条件不可能完全一致。利用有限元软件,去除边界影响,修正仿真模型,通过计算可以有效获得固面可展开天线反射器在轨工作状态下的模态参数。文章对星载固面可展开天线反射器模态特性的研究对于星载可展开结构的模态试验具有借鉴作用。This paper studies modal test of the deployable rigid reflectors on satellites. The modal test method, proce- dure, conclusion with classical modal impact are introduced in detail. Because of gravity affection or lack of antenna parts, the boundary condition of satellite antenna is different between testing on the ground and working on satellites. With the finite element method, the boundary effect can be eliminated and the model modified. It is valid to get modal parameters of the deployable parabolic antenna reflector working on satellite. Reference to modal experiment researches is provided in this paper of deployable rigid satellite antenna.

关 键 词：可展开天线 反射器 模态试验 基频 有限元 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计]