ANALYTICAL MODEL OF EDDY CURRENT-BASED DEVICE MEANT TO THE CONDUCTIVE MATERIALS SORTING

摘要

The developed analytical model refers to an electromagnetic device intended for sorting conductive materials, as in the waste management domain. The main component of the device is a probe coil with ferrite open core that has to be placed near the piece of conductive material subject to sorting. When the probe coil is supplied by a mean frequency voltage source, eddy currents are induced into the tested conductive media, the measured impedance depends on its physical parameters. The influence of the physical parameters of the coil probe and of the relative position of the probe coil and material are also analyzed. Based on our new analytical model of the system, many numerical results corresponding to a wide range of working parameters have been investigated, in order to identify most proper possible implementations in engineering practice.