Abstract: In order to solve the problem of standardization of electromagnetic force simulation, the three-dimensional distribution of air gap magnetic field is obtained by establishing the standard model of electromagnetic force simulation, and the processing flow of 3D FFT is formulated to determine the spatial order and time frequency characteristics of electromagnetic force. In order to verify the practicability of this technology, two types of mass-produced motors are selected for electromagnetic force simulation, and the electromagnetic vibration of these two motors is tested. The accuracy of this method is confirmed by comparing with the trend of electromagnetic force simulation results. Finally, the electromagnetic force optimization was carried out in the design phase. In the end, through the comparison of electromagnetic vibration of sample preparation motor, the electromagnetic vibration of motor 2f decreased by 53%, respectively, which verified the effectiveness of the method.

Key words: Electromagnetic force, Air gap magnetic field, 3D FFT, Spatial order, Time frequency