基于扭摆法的转动惯量测量  

Rotational Inertia Measurement Using Torsion Pendulum

作　　者：刘振东[1] 郑桂梅[1] 孙兴川[1] 

机构地区：[1]安阳工学院理学部,河南安阳455000

出　　处：《河南科学》2008年第10期1181-1185,共5页Henan Science

基　　金：国家自然科学基金资助(40574010)

摘　　要：利用扭摆法测量物体的转动惯量,受到待测物体摆动周期测量误差、装配位置偏移误差和轴线倾斜误差的影响,虽然这些相对误差总合γ<0.1%,为了使测量结果更加精确,实践中应该注意扭摆的水平、光电门与挡光杆的垂直、待测物重心的位置、人为误差的影响以及待测物与标准件形状、质量的相近性等.初摆角和摆动次数对测量周期没有影响.The measurement of rotational inertia is affected by the error of the torsion pendulum cycle measurement, the location offset and the axis tilting for the being measured thing. Although these combined relative error γ〈0.1%, in order to obtain more precise measurement results, it should be pay attention for the level of the torsion pendulum, the uprightness between the photoelectric doors and the block rod, the location of the being measured substance, the similarity of the shape and the quality between the standard object and the being measured object, human factors and so on. The beginning angle and the swing number of torsion pendulum don＇t affect the torsion cycle of the object.

关 键 词：转动惯量 误差分析 周期 扭摆 

分 类 号：O313.3[理学—一般力学与力学基础]