摘要
永磁伺服电机直接影响机器人系统的操作精度与运行稳定。以两种不同永磁体形状方案的表贴式永磁电机作为研究对象,建立有限元参数化模型,对电机的齿槽转矩、反电动势、转矩波动等主要电磁性能进行了对比分析。通过分析发现,平底面包型永磁电机的反电动势正弦性更好,具有更小的转矩波动和更高的转矩密度,最终确定出一种更优的伺服电机设计方案。该研究成果对永磁伺服电机的设计具有一定的理论价值与指导意义。
Permanent magnet servo motors directly affect the operation accuracy and stability of the robot system.Taking two surface-mounted permanent magnet motors with different permanent magnet shapes as the research object,a finite element parameter model was established.The main electromagnetic properties of the motor,such as cogging torque,back electromotive force,and torque ripple,were compared and analyzed.Through analysis,it was found that the back electromotive force of the flat-bottomed permanent magnet motor had better sinusoidal properties,smaller torque fluctuations and higher torque density.Finally,a better servo motor design plan was determined.The research results had certain theoretical value and guiding significance for the design of permanent magnet servo motors.
作者
杨奕
YANG Yi(Urban Power Supply Company,State Grid Shanghai Municipal Electric Power Company,Shanghai 200080,China)
出处
《电工技术》
2020年第21期162-164,167,共4页
Electric Engineering
关键词
永磁伺服电机
永磁体结构
齿槽转矩
有限元分析
permanent magnet servo motor
permanent magnet structure
cogging torque
finite element analysis
