永磁同步直线电机是新一代高效高精度电子设备、数控机床等机电产品中最具代表性的先进电机技术之一。构建了永磁同步直线电机模型，不考虑边缘效应，建立了电机初级齿部所受单齿切向电磁力数学模型，并利用有限元分析软件对电机单齿切向电磁力和局部齿槽电磁力进行仿真计算。最后利用ANSYS Workbench平台对电机的模态和振动加速度进行计算，验证了切向电磁力在振动分析中的重要性。结果表明，局部齿槽电磁力波动是单齿切向电磁力产生振动的重要原因，通过合理调整电机初级齿部磁场分布，可以有效减小电机的振动，为该类电机的设计和优化提供了参考。

Permanent magnet synchronous linear motor is one of the most representative advanced motor technologies in the new generation of high-efficient and high-precision electronic equipment, CNC machine tools, and other electromechanical products. A permanent magnet synchronous linear motor model is established. Without considering edge effects, a mathematical model of the tangential electromagnetic force on the primary teeth of the motor is established, and the finite element analysis software is used to simulate and calculate the single tooth tangential electromagnetic force and local cogging electromagnetic force of the motor. Finally, the modal and vibration acceleration of the motor are calculated using the ANSYS Workbench platform to verify the importance of tangential electromagnetic force in vibration analysis. The results indicate that the fluctuation of local cogging electromagnetic force is the important cause of vibration generated by single tooth tangential force. The vibration of the motor can be effectively reduced by reasonably adjusting the distribution of the magnetic field in the primary teeth of the motor, which provides a reference for the design and optimization of this type of motor.