摘要
本文对大口径相机结构次镜相对主镜的振动进行了分析，并提出了次镜动力减振的减振方式，且对动力减振系统进行了分析．最后对某相机的动力减振结构进行了优化设计，并计算了一定冲击激励下原结构与带动力减振结构的响应时间历程．结果表明动力减振具有一定的减振效果。
In this paper,the secondary mirror
vibration absorption,a effective way in some cases to control the primary mirror/secondary
mirror vibration,is presented based on the studying on the vibration of the structure of large
optical system.And the vibration suppression effect on the secondary mirror under a wider
frequency range excitation is analysed and the damping ratio is a decisive factor.Then the
optimal design of the structure of a vibation absorber is presented.The absolute amplitudes
nondimensional response of the secondary mirror with a vibration absorber is just one 6th of
the absolute amplitudes nondimensional response of the secondary mirror without vibration
absorber under the same excitation (0.1g shock).
出处
《光子学报》
EI
CAS
CSCD
1999年第5期458-462,共5页
Acta Photonica Sinica
关键词
振动控制
动力吸振
大型
相机
主镜/次镜结构
Vibration control
Vibration
absorption
Optimal design of structure
Large optical system
