关键词: 无刷直流电机, 正交试验, 田口法, 转矩, 多目标优化

Abstract: To efficiently optimize the motor output performance with multiple objectives, the Taguchi method optimization algorithm was used. The BLDCM was taken as the research object, and the optimization objective function was designed based on the initial design parameters. The performance indexes to be optimized were the output torque, torque pulsation, and iron loss of the motor. The optimization variables for the key structural parameters, such as stator inner diameter, slot depth, slot opening, tooth width, and air gap, were determined. Orthogonal tests were designed to calculate the signal-to-noise ratio response value, and combined with sensitivity analysis, stable parameter combinations that meet the design requirements were screened out. Finite element analysis was used to verify the changes in target parameters before and after optimization, demonstrating the method's validity.

Key words: brushless DC motor( BLDCM), orthogonal test, Taguchi method, torque, multi-objective optimization