基于锤击法模态试验的某星载天线基频辨识研究  

Fundamental Frequency Identification Research on Satellite Antenna Based on Impact Modal Test

作　　者：方永刚[1] 郑士昆[1] 薛永刚[1] 杨俊良[1] 

机构地区：[1]西安空间无线电技术研究所,西安710000

出　　处：《空间电子技术》2017年第1期46-49,共4页Space Electronic Technology

摘　　要：利用锤击法对某星载天线进行了基频辨识研究,得到了该结构在3种不同边界状态下的基频。测试结果表明,边界状态变化影响结构基频,但振形、阻尼比保持不变。测试结果为改进结构设计提供了参考。The impact method was adopted to identify the fundamental frequency of the satellite antenna, the fundamen-tal frequencies of the structure were gained under three boundary conditions. Test result shows ： the fundamental frequency can change with the different boundary condition, but the mode shape and the damping ratio cannl change. The test result could be considered as reference to improve design of the satellite antenna structures.

关 键 词：天线 锤击法 模态试验 基频 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计]