一种磁滞回线数据自动采集的实验方法

An Experimental Method for Automatic Acquisition of Hysteresis Loop Data

基于LabVIEW虚拟平台和磁滞回线测量的基本原理,通过USB接口技术实现示波器和PC机的交互式通信,实现磁滞回线实验数据的自动采集和信号处理,为铁磁材料磁滞回线的测量提供一种快速有效的方法。基于设计的实验装置,系统地研究在特定输入电压下,磁滞回线特性随外接电阻的变化规律以及磁性材料励磁和去磁过程的异同。

Based on the basic principle of Labview virtual platform and hysteresis loop measurement,the interactive communication between oscilloscope and PC is realized through USB interface technology,and the automatic acquisition and signal processing of hysteresis loop experimental data are achieved,which provide a fast and efficient method for measuring the hysteresis loop of ferromagnetic materials.Based on the designed experimental device,systematically the variation of the hysteresis loop characteristics with the external resistanles studied,the similarities and differences between excitation and demagnetization processes of the magnetic material under certain input voltages are also researched.