For global optimization, a new method is proposed to design permanent-magnet DC machine according to the features of the machine, and the simple GA is improved to match with the new method.

• 为使全局优化更为有效，针对永磁直流电机设计特点，提出了新的设计方法，并对简单遗传算法进行了改进，使两者有机融合在一起。