某航天超光谱成像仪光学指向摆镜系统的模态分析  

Modality analysis on swing mirror system in imagine hyperspectrometer of space optical based on ANSYS

作　　者：刘阳[1,2] 熊望娥[1] 高郭鹏[1,2] 

机构地区：[1]中科院西安光学精密机械研究所,西安710119 [2]中科院研究生院,北京100039

出　　处：《机械设计与制造》2009年第12期216-218,共3页Machinery Design & Manufacture

基　　金：国家重点基础研究发展计划项目(2009CB724005)

摘　　要：共振是机械结构设计研究是不可忽视的问题,尤其是在航天领域,卫星发射时会产生主频率在（0-100）Hz振动,为了保证仪器的安全,要求载荷避免发生共振。采用有限元分析软件ANSYS对航天摆镜的结构设计方案进行模态分析,得到了系统前6阶固有振动频率和振型,结果表明摆镜系统在（0-100）HZ以内不会产生共振,达到了设计要求。这些数据还为传动伺服控制系统提供了必要依据。Resonance is a non-neglectable problem for the study of machinery mechanism design.Especially,Space Machinery mechanism shouldn’t occur resonance between（0～100）HZ.By the use of fi-nite element analytical software ANSYS to carrying out modality analysis on the designing structures the vibration characteristics of structure can be obtained.Modality analysis was carried out in this paper on a swing mirror,and the preceding 6 ordered inherent frequencies and vibration type of the swing mirror were obtained.As a result,the swing mirror system is safe in（0～100）Hz,these data provided foundations for the automatic control of rotary speed of the milling planning rotor.

关 键 词：指向摆镜 ANSYS 有限元 模态分析 

分 类 号：TH744[机械工程—光学工程] TH76[机械工程—仪器科学与技术]