物探与化探2012，Vol.36Issue(6)：960-965,6.
航空重力减振系统振动测试与分析
THE VIBRATION TEST AND ANALYSIS OF THE VIBRATION REDUCTION SYSTEM FOR AIRBORNE GRAVITY
摘要
Abstract
In the survey of the airborne gravity system, high frequency vibration caused by aircraft engine and airborne environment affects the precision of airborne gravity system measurement seriously, and this problem could be solved by the method of vibration reduction system. Therefore, the suppression effect of vibration reduction system and its modal parameters (natural frequency, damping ratio and model shape) constitute the very important basis of the structural design and evaluation of the vibration reduction system. Aimed at solving the problems existent in the airborne gravity vibration reduction system, the authors made several vibration tests, and the result shows that the natural frequency can avoid the periodic vibration frequency of aircraft engine. In the frequency band of 100-500 Hz, the vibration transmissibility for the measuring point 1 is from - 18 to -38 dB, and the vibration reduction effect is quite obvious.关键词
航空重力/高频振动/减振/模态参数/振动传递率Key words
airborne gravity/ high-frequency vibration/ vibration suppression/ model parameters/ vibration transmissibility分类
天文与地球科学引用本文复制引用
屈进红,周锡华,李冰,王志博,乔扬..航空重力减振系统振动测试与分析[J].物探与化探,2012,36(6):960-965,6.基金项目
高新技术研究发展计划(863计划)(2006AA06A202)项目、中国国土资源航空物探遥感中心对地观测技术工程实验室课题(2010YFL03) （863计划）
