摘要
为了验证高精度星敏感器是否能承受飞行器发射过程中产生的随机振动载荷,对其进行了随机振动分析.从振动理论入手,详细阐述了高精度星敏感器随机振动分析过程中功率谱密度的确定.利用有限元分析软件Patran和Nastran对其进行随机振动分析,结果表明发射过程中产生的随机振动对高精度星敏感器的影响非常小,为其结构设计提供了依据.
In order to verify if the high accuracy star sensor could resist against the random vibration pro- duced by the air vehicle during launching, the random vibration was analyzed. First, the theory of vibration and power spectral density was presented. Then random vibration analysis was done by the finite element software Patran and Nastran. The results show that the effect of the random vibration is very small, which is useful to improve the structure design.
出处
《光电技术应用》
2010年第1期71-74,共4页
Electro-Optic Technology Application
基金
国家973计划项目
关键词
星敏感器
随机振动
有限元
star sensor
random vibration
finite element
