A Progressive Loss Decomposition Method for Low-Frequency Shielding of Soft Magnetic Materials.

Energy loss in shielding soft magnetic materials at low frequencies (1-100 Hz) can cause fluctuations in the material's magnetic field, and the resulting magnetic noise can interfere with the measurement accuracy and basic precision physics of biomagnetic signals. This places higher demands on the credibility and accuracy of loss separation predictions. The current statistical loss theory (STL) method tends to ignore the high impact of the excitation dependence of quasi-static loss in the low-frequency band on the prediction accuracy.