摘要
为测绘软磁材料超微晶的磁导率曲线,采用电流电压法对其进行测量,并对测量系统及方法进行优化改进,设计上位机软件,采用标准RS232通信接口,实现对测试仪器的自动控制及测量数据的实时记录,最终描绘出磁导率随交流磁场强度变化的曲线。结果表明:该方法能准确测出初始磁导率和最大磁导率,其测绘结果与厂家数据手册基本相符,有一定的工程利用价值。
In order to describe the permeability curve of soft magnetic material ultra crystallite, the current voltage meter is used to measure, and optimize the system and method of measurement, the instrument's automatic controlling and the data's real-time recording are realized through standard RS232 communication interface. Finally map the permeability variation curve by influence of AC magnetic field intensity. The result shows that the method can accurately measure the initial and maximum permeability. The result conforms to the data sheet, which has a certain engineering value in use.
引文
[1]赵占奎,邓娜,昝朝,等.高性能软磁材料的研究进展[J].长春工业大学学报:自然科学版,2012,33(5):521-528.
[2]陈亚杰.去磁现象与退磁方法[J].物理教师,2003,10(24):49-50.
[3]刘兴民.关于退磁方法的讨论[J].宇航计测技术,2002,5(22):13-15.
[4]张冲,董威.基于三电压法的弹性磁导率测量[J].物理测试,2013,31(2):43-52.
[5]张近民,丁印福,王立欣.一种测量软磁铁氧体磁芯磁导率的方法[J].电测与仪表,2009,46(522):26,67.
[6]张关汉.软磁铁氧体高频复数磁导率的测量方法[J].磁性材料及器件,2000,30(3):54-56.
[7]梅文余.动态磁性测量[M].北京:机械工业出版社,1985:212-227.
[8]赵修科.开关电源中磁性元器件[M].南京:南京航空航天大学自动化学院,2004:41-43.
[9]白旭东,刘巧凤,王飞,等.铁磁材料磁导率测量实验研究[J].大学物理实验,2009,22(3):5-7.
