摘要
星体跟踪器是机载天文导航设备的重要组成部分,随机振动是其结构失效的重要因素。采用有限元分析软件Ansys workbench对某机载星体跟踪器进行了随机振动分析,获得了1σ响应值与随机响应谱。根据分析结果进行了随机疲劳计算,得到了疲劳寿命使用系数。该分析方法同样适用于其他光电设备的随机振动与疲劳分析,对光电设备的结构设计有一定的指导作用。
The star tracker is the primary part of airborne celestial navigation device. Random vibration is an important invalidation factor of the star tracker. The random vibration of a certain airborne star tracker is analyzed based on Ansys workbench, and the 1~ response values and random response spectra are acquired. At last, the random fatigue coefficient is calculated. The method can be applied to the analysis of other electro-optical devices as well, and it is useful for the design of electro-optical devices.
出处
《光学与光电技术》
2010年第4期44-47,共4页
Optics & Optoelectronic Technology
关键词
星体跟踪器
机载
随机振动
疲劳
star tracker
airborne
random vibration
fatigue
