## 1 Introduction
The above five common magnetic hysteresis models have their own advantages and disadvantages in engineering applications, summarized as shown in Table 1. Hybrid magnetic hysteresis models are usually a combination of the Preisach model and S-W model. However, when most magnetic hysteresis models and the improved models are used for PWM excitation, the value of the relative error will be increased (here, as in the abstract, the error refers to the discrepancy between experimental results and theoretical model predictions). Therefore, combined with Preisach model, an improved modeling method suitable for PWM excitation is proposed. In this paper, an improved Preisach model is proposed, introducing correction coefficients and improving the approximation formula based on the classical Preisach model. At the same time, the method takes into account the wiping-out property in the magnetization process. The meaning of the wiping-out property is that when the input magnetic field strength \(\mathbf{H}\) value is greater than certain historical maximum values or the input magnetic field strength \(\mathbf{H}\) value is less than certain historical minimum values, the input voltage value will wipe these historical extreme values, and the historical processes related to these historical extreme values will also be wiped, no longer affecting future output. By comparing the principles of measuring magnetic properties of different grain-oriented silicon steel \begin{table}
\begin{tabular}{c c c} \hline \hline
**Magnetic Hysteresis Models** & **Advantages** & **Disadvantages** \\ \hline \multirow{2}{*}{Preisach Model} & Based on the original model, the proposed simplified & Interactions between particles and specific \\  & Preisach model is easy to compute and has a wide & magnetization processes are not considered \\  & range of applications & \\ \hline \multirow{2}{*}{J-A Model} & \multirow{2}{*}{The principle is simple and easy to improve} & The number of unknowns is high, and the \\  & The principle is simple and easy to improve & parameter identification process is complex and \\  & computationally intensive \\ \hline \multirow{2}{*}{S-W Model} & Analyzed from the energy point of view, it can reflect & \\  & the nature of the magnetic hysteresis phenomenon & Limited scope of application \\ \hline \multirow{2}{*}{E\&S Model} & Vectors B and H and gives the relation to establish & \\  & technological vector magnetic properties. Considers & Relies on a large amount of experimental data \\ \multicolumn{4}{c}{the anisotropic properties of ferromagnetic materials} \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Comparison of magnetic hysteresis models. and selecting the appropriate measurement method, relying on the basis of the ring-sample test method, we built the experimental platform. Based on the LabVIEW2018 platform and the data acquisition and data processing functions of the data acquisition card, the magnetic properties of the grain-oriented silicon steel specimens were measured. Combined with the experimental data, by comparing the simulation results of the traditional Preisach model and the improved Preisach model proposed in this paper, the results show that the error of the improved model is smaller than that of the traditional model, i.e., the results of the improved hysteresis modeling are more accurate.