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Interpolation of Measured Hysteresis Loops for Proper Construction of the Everett Map

The Everett map is a component used by the Preisach model that stores the hysteresis behavior of soft-magnetic materials, and allows for accurate modeling of hysteresis loops when properly constructed. It is created from scattered data points, obtained from a set of magnetic measurements, that need to be interpolated for usage in the Preisach model. The generic approach for interpolation, based on Delaunay triangulation and polynomial or spline surface fits, introduces artifacts in the modeled hysteresis results, due to low quality triangulation or oscillations. Therefore, this work presents a different method of interpolating the measured data to construct the Everett map without impacting its accuracy.