摘要：传统的直线电机在恒低速运行时，需要采用与控制设备相结合的方式或采用复杂的工艺结构，从而导致成本大幅增加。针对上述问题提出了低速永磁直线电机，并给出电机结构和基于磁路、技术指标下，结合直接搜索算法的电机最优设计。并通过建立电机三维有限元模型，显示出永磁体工作点和气隙磁场特性符合磁路设计要求，验证了电机结构的有效性，为该电机的优化设计提供了依据。
关键词：低速永磁直线电机；电机优化设计；直接搜索算法；有限元仿真

Abstract: When traditional linear motor worked on constant low speed, it need control devices or complex structure, resulting in significant increases in cost. In response to these issues offered lowspeed permanent magnet linear motor, and gave the motor structure, basing on magnetic circuit, technical targets, combined with the direct search algorithm optimizing motor design. Through the establishment of threedimensional finite element model of the motor, analyzed the operating point of the permanent magnet and the characteristics of airgap magnetic field suited the design requirements, verified the validity of the motor structure, provided the basis of optimal design of the motor.
Key words: lowspeed permanent magnet linear motor; optimization of motor design; direct search algorithm; finite element simulation