失重状态下小质量测量装置设计与实现  

Design and Implementation of Small Mass Measurement Device in Weightlessness

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作  者:刘苗 刘金生[2] 毛谦敏[1] 张煜 张洪军[1] Liu Miao;Liu Jinsheng;Mao Qianmin;Zhang Yu;Zhang Hongjun(不详;China Jiliang University,Hangzhou Zhejiang 310018,China)

机构地区:[1]中国计量大学,浙江杭州310018 [2]中国航天员科研训练中心,北京100094

出  处:《航天医学与医学工程》2021年第1期39-43,共5页Space Medicine & Medical Engineering

摘  要:目的基于弹簧振子原理研制一种失重状态下测量10~700 g小质量物体质量测量装置。方法装置使用片弹簧作为弹性元件,采用悬臂梁振动方式,利用位移传感器获取振动周期。利用片弹簧自身结构克服重力影响来模拟失重条件。结果水平面内振动条件下,被测质量在10~700 g范围内,测量误差优于±0.5 g,重复性精度优于±0.1 g;当振动不在水平面内时,重力对测量产生影响,使质量测量产生较大误差。结论所开发装置测量精度高,结构简单可靠,可用于失重状态下的小质量测量。Objective Based on the principle of spring oscillator,a mass measurement device for measuring small masses ranging from 10 g to 700 g in weightless conditions was developed.Methods Leaf spring was used in the device as the elastic element and the cantilever-type vibration mode was adopted.A displacement sensor was used to obtain the vibration period.During the ground tests,the structure of leaf spring itself was used to counteract the gravity and thus simulate the micro-gravity condition.Results Under the condition of vibration in horizontal plane,the measurement error was better than ±0.5 g and the repeatability accuracy was better than ±0.1 g for masses ranging from 10 g to 700 g;When the vibration was not in the horizontal plane,the gravity affected the measurement and brought large error to the mass measurement.Conclusion The developed device has high measurement accuracy,simple and reliable structure,and can be used for small mass measurement in weightlessness.

关 键 词:弹簧振子原理 片弹簧 小质量测量 重力影响 

分 类 号:TP391[自动化与计算机技术—计算机应用技术]

 

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