多功能电涡流演示仪  

Multi-purpose instrument to demonstrate eddy currents

作　　者：刘通 王泽源 于琪 LIU Tong;WANG Ze-yuan;YU Qi(School of Physics and Materials Science,Tianjin Normal University,Tianjin 300387,China;Tianjin Experimental High School,Tianjin 300074,China)

机构地区：[1]天津师范大学物理与材料科学学院,天津300387 [2]天津市实验中学,天津300074

出　　处：《物理实验》2022年第4期47-50,56,共5页Physics Experimentation

基　　金：2021年天津市科学普及技术普及项目(No.52P21002);天津师范大学教育基金项目(No.52XJ2004)。

摘　　要：高中物理教学中,关于涡流部分的演示实验较少,利用电涡流演示仪可以弥补该不足,改善教学效果.根据电磁感应中楞次定律的理论知识和基本原理设计了多功能电涡流演示仪,通过转动的铝盘与磁铁的不同磁极之间产生的相互作用,根据电磁阻尼和电磁驱动原理,完成电涡流悬浮、隔离传动、隔离制动和发电4种现象的演示.There were few demonstration experiments about eddy current in high school physics teaching.And the eddy current demonstration instrument was used to make up for this deficiency and improve the teaching effect.Based on theoretical knowledge and the basic principles of Lenz law in electromagnetic induction,a multi-purpose eddy current demonstration instrument had been developed.The demonstration process of eddy current suspension,insulated transmission,insulated braking and energy generation had been completed through the interaction between the aluminium rotating disc and the magnet based on the electromagnetic damping and drive.

关 键 词：电磁感应 楞次定律 涡流 电磁阻尼 电磁驱动 

分 类 号：G633.7[文化科学—教育学]