噪声与振动控制2019，Vol.39Issue(1)：110-115,6.DOI:10.3969/j.issn.1006-1355.2019.01.021
机械制冷机微振动固支测力修正
Correction of the Mirco-vibration Force Test on Clamped Mechanical Cryocoolers
马军 1聂云松 1闫秀荣 1童卫明1
作者信息
- 1. 北京空间机电研究所, 北京 100094
- 折叠
摘要
Abstract
Magnitude errors and loading position uncertainties are faced when the results of micro-vibration force test on clamped mechanical cryocoolers are applied to engineering. A correction method is introduced based on dynamic analysis for the micro-vibration force test on clamped cryocoolers. In this correction method, the measured mirco-vibration forces at the center of the upper surface of the testing platform are translated to the corrected mirco-vibration forces which are applied to the rotor of the cryocooler. Then, the de-coupling between the mirco-vibration forces of the cryocooler and the stiffness and mass of the support structure can be realized. Spectrums of the corrected mirco-vibration forces by this correction method are the actual spectrums of the mirco-vibration forces output by the cryocooler and the load position is the exact position where the mirco-vibration is produced. Problems of the engineering application in the micro-vibration force test are solved by this correction method. The corrected results can be used for micro-vibration properties evaluation and dynamics response analysis for the cryocoolers.关键词
振动与波/机械制冷机/微振动/固支测力/测力台Key words
vibration and wave/mechanical cryocooler/mirco-vibration/force test on calmped cryocooler/force testing platform分类
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马军,聂云松,闫秀荣,童卫明..机械制冷机微振动固支测力修正[J].噪声与振动控制,2019,39(1):110-115,6.
