计量学报2026，Vol.47Issue(4)：531-535,5.DOI:10.3969/j.issn.1000-1158.2026.04.08
绝对重力仪落体加速分离段运动特性分析
Analysis of the Motion Characteristics of the Accelerating Separation Section of the Falling Object in the Absolute Gravimeter
摘要
Abstract
For the laser interferometric absolute gravity instrument,analyze the motion characteristics of the cart and the falling object accelerated separation stage,use the laser vibrometer to get the vertical motion parameters of the cart,determine the time point of separation of the trailer and the falling object,project the vertical motion model after the separation of the falling object,and at the same time,use the laser interferometer to measure the actual motion curve of the falling object to validate it.The experiment shows that the separation time between the FG5-X type absolute gravity meter carriage and the falling object is 9.77±0.02 ms.The falling object displacement curve measured by laser interferometer is validated against the falling object motion model,and the results show that the difference between the measured falling object displacement and the falling object motion model displacement is small,the difference is distributed between±2×10-6 mm,and the standard deviation of the residual of the difference is 5.57×10-7 mm,which is in good consistency.关键词
重力测量/绝对重力仪/激光测振仪/垂向运动模型Key words
gravity measurement/absolute gravimeter/laser vibrometer/vertical motion model分类
通用工业技术引用本文复制引用
刘征,冯金扬,王启宇,李春剑,要佳敏,彭宝营,吴书清..绝对重力仪落体加速分离段运动特性分析[J].计量学报,2026,47(4):531-535,5.基金项目
国家科技重大专项(2024ZD1002504) （2024ZD1002504）
中国计量科学研究院基本科研业务费(AKYZZ2302,AKYZZ2403) （AKYZZ2302,AKYZZ2403）
