基于PLC运动控制的平面磁场图景绘制仪

The Image Gathering System of Plane Magnetic Field based on PLC Motion Control

磁场图景的测绘一直以来使用手工播撒磁粉或稀疏磁针阵列来获取磁场图景,效率较低,重复性差。随着对继电器、接触器等电磁机构,以及永磁体研究的深入,需要得到不同形状的平面磁场图景,并可以反复进行实验研究;本文基于PLC运动控制,设计了平面磁场图景绘制仪机械运动结构及其电控系统,制作了专用的磁粉播撒装置,编写了伺服电机运动控制程序,编制了上位机软件,实现了对系统的控制、监控及数据的采集,该系统能够在指定区域均匀而快速的自动播撒磁粉,并可实现重复操作;实测采集某牌号永磁单体的磁场图景清晰准确,与设计预期相符。

The picture of magnetic field is always obtained by spreading magnetic powder by hand or applying sparse arrays of magnetic needles, the methods are low - efficiency and poor repeatability. With the deepening of permanent magnet study, getting images of the magnetic field in different permanent magnet shapes and do repeated tests on the permanent magnet are in need. Based on programmable logic controller（PLC） motion control, the control and mechanical system have been built, and the software has been programmed. Accomplished the design and manufacture, the system has achieved the goal that spreading magnetic powder quickly and evenly in the appointed area.