测量物体转动惯量的新方法研究

doi:10.3969/j.issn.1000-1158.2011.01.11

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摘要利用刚体绕定轴转动的动能定理,在建立了单轴气浮台绕定轴转动的转动惯量与时间关系的基础上,提出了一种基于单轴气浮台利用能量衰减测量物体转动惯量的新方法。通过理论推导得出了测量物体转动惯量的实验计算式,并进行了实验验证,实验测量结果与理论计算结果的相对误差均在±0.5%以内。

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	张勇
	孙宁
	任永川
	梁永湖

关键词 ：计量学, 转动惯量, 单轴气浮台, 能量衰减

Abstract：With the kinetic energy theorem of the rigid body rotating round fixed axis, the relation between the moment of inertia of a single axis air bearing table rotating around fixed axis and time is established.On this basis, a new method for measuring the moment of inertia based on energy attenuation of a single axis air bearing table is described.Through detailed theoretical deduction, the experimental formula for measuring the moment of inertia of the objects is obtained.And the experimental results of measurement are verified.The results show that the relative error between the experimental results and the theoretical results is within ± 0.5%.

Key words： Metrology Moment of inertia Single axis air bearing table Energy attenuation

PACS:

TB936

基金资助:国家自然科学基金(50965005); 广西制造系统与先进制造技术重点实验室主任课题(0842006-019-Z)

作者简介: 张勇(1981－),男,河北衡水人,硕士研究生,研究方向为机电一体化技术。zhangyong885141@126.com

引用本文:

张勇,孙宁,任永川,梁永湖. 测量物体转动惯量的新方法研究[J]. 计量学报, 2011, 32(1): 49-52.
ZHANG Yong,SUN Ning,REN Yong-chuan,LIANG Yong-hu . Study on a New Method for Measuring the Moment of Inertia. Acta Metrologica Sinica, 2011, 32(1): 49-52.

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http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2011.01.11 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2011/V32/I1/49