The development of remote sensing satellites has made the application of spaceborne cryocool-er widespread.The cryocooler provides the required temperature environment for the detector,but brings micro-vibration interference which will affect the performance of detector.Therefore,it is neces-sary to suppress the micro-vibration of cryocooler.In this paper,a passive vibration isolation device for cryocooler is designed based on relaxation damper and layout of three-point uniform support,and the iso-lation performance of the device is analyzed.The transfer characteristics of dynamic model and finite ele-ment model are compared.The result shows that the vibration isolation efficiency of the designed passive vibration isolation device for the main frequency,double frequency and triple frequency can achieve 90%,95%and 97%.This paper can provide significant reference for designing such kind of passive vibration i-solation device for sapceborne cryocooler.
关键词
微振动/松弛型阻尼/空间制冷机/被动隔振/传递率
Key words
micro-vibration/relaxation type damping/spaceborne cryocooler/passive isolator/transmissibility
维普
万方数据