40m天线换馈机构结构设计及有限元分析  

Structure Design and Finite Element Analysis of Feed-switching Mechanism in a 40 m Antenna

作　　者：李燕[1] 

机构地区：[1]中国电子科技集团公司第三十九研究所,陕西西安710065

出　　处：《电子机械工程》2017年第2期22-26,30,共6页Electro-Mechanical Engineering

摘　　要：文中根据某40 m天线实际工程需要设计了一种新型换馈机构。该换馈机构结构简单,易于操作,在换馈驱动单元驱动下,馈源绕旋转轴旋转实现换馈。在换馈机构工作过程中,工况复杂多变。由于换馈角度较小,时间要求相对较长,馈源摆动角速度和角加速度都非常小,因此可以用静力学方法对其进行研究。利用ANSYS对该换馈机构进行结构建模、计算和分析,得出在多种复杂工况下,该换馈机构能够满足馈源对其结构强度和刚度的要求。该换馈机构可使天线的制造成本降低,使用率提高。A new style of feed-switching mechanism is designed for a 40 m antenna in this paper according to actual engineering requirements.This feed-switching mechanism is simple in structure and easy to operate.Feed-switching drive makes feed rotating around axis to realize feed switching.The feed-switching mechanism works under complicated working conditions.Because of small rotation angle and long time requirements,the feed rotates with very low velocity and acceleration,therefore statics methods can be used for research.Structure modeling,calculation and analysis for the feed-switching mechanism are conducted using ANSYS.The results show that the mechanism can meet the strength and stiffness requirements of feed under complex working conditions.This feed-switching mechanism can reduce the manufacturing cost of the antenna and increase its efficiency.

关 键 词：换馈机构 结构设计 ANSYS 

分 类 号：TN82[电子电信—信息与通信工程]