摘要
物理实验中开设的测定磁介质中的直流磁滞回线实验属于电磁学综合性、设计性项目,实验有助于学生直观、清晰地认知和理解磁介质的磁滞现象。而在实际实验操作中往往测量误差较大,根据所测数据往往难以获得正确的直流磁滞回线图形,会给学生带来不解与困惑。文章着重分析实验过程中误差产生原因并提出解决方案,对实验结果加以修正。
The experimental study on determining DC hysteresis loop in magnetic media offered by physics experiment course at university is a comprehensive program,which benefits students' understanding of hysteresis loop of magnetic media in a more perceptual and clear way.However,during the experiment,there will be a relatively big error,with which students cannot plot the correct graph of DC hysteresis loop,resulting to the confusion and misunderstanding.Emphasizes on the cause of errors during the experiment and putting forward the solutions,which contributes to the successful experiment.
出处
《物理与工程》
2017年第S1期311-316,共6页
Physics and Engineering
基金
江西省教学改革研究重点项目"雨课堂"在大学物理课程中的应用实践(JXJG-16-7-1)
关键词
磁滞回线
误差来源
零点漂移
图形校正
hysteresis loop
source of error
zero drift
correction of graph
