Improved analytical method for hysteresis modelling of soft magnetic materials

The analytical model for hysteresis cycle of soft magnetic materials using arcs of circle and straight line segments presented in [2] has been improved to minimize the error between the measured and modelled one. The LabVIEW program has been improved to be more user-friendly. For the new model presented in this paper, the data that are necessary for modelling are automatically collected from the measured data using sorting methods developed in LabVIEW. The input data required to be inserted by the user are reduced to just two points not very precisely chosen from measured hysteresis cycle. The program makes to slip these two points along measured cycle to achieve minimum error between measured and modelled cycle. The advantage of the proposed analytical model over other more known models is given by the small amount of input data supplied by the programmer. The program allows, as indicated in [2], to obtain minor cycles, first-order reversal curve of first magnetization curve using a reverse mapping function, all starting from major hysteresis cycle properly modelled. For consistency, the proposed program allows comparison of measured and modelled data to observe the benefits obtained by the method of minimizing error used.