非磁性旋转导体盘阻尼效应的定量研究  

Quantitative study of dampening effect on the nonmagnetic revolving metal plate

作　　者：刘雨龙[1] 俞晓明[1] 

机构地区：[1]盐城工学院数理学院,江苏盐城224051

出　　处：《大学物理》2016年第12期30-33,共4页College Physics

摘　　要：应用法拉第电磁感应定律推导出非磁性旋转导体盘的转动衰减方程;定义并测量了导体盘的摩擦阻尼系数和电磁阻尼系数;分析研究了电磁阻尼系数与励磁电流平方间的关系.The regression equation of angular velocity of a nonmagnetic revolving metal plate is deduced by using the Faraday＇ s law of induction. Then, both frictional damping coefficient and electromagnetic damping coefficient are defined and measured. Lastly, the relationship between the electromagnetic damping coefficient and the value of exciting current is analyzed.

关 键 词：旋转导体盘 摩擦阻尼系数 电磁阻尼系数 转速衰减方程 

分 类 号：O441[理学—电磁学]