摘  要：该文在介绍了艾默生统一驱动器概况的基础上，给出了应用硬件原理图和具体参数设计实例，重点分析了关键参数选取方法和调试步骤。通过实验数据和工业现场应用证明参数选取合理、系统运行平稳，是一种解决大功率永磁同步交流伺服电机配套应用的有效办法。
关键词：永磁同步伺服电机；交流驱动器；参数选取

Abstract: Subdivided driving for two-phase hybrid step motor was designed,in which FPGA was adopted to realize subdivided driving for step motor. Uniform constant amplitude rotating current vector subdivision was adoped to realize cnstant torque of step motor,and PWM was used to control excitation current of step motor.Testing shows that the subdivided driving is stable,and can overcome the shortcoming of  vibration in low frequency state and losting step in hight frequency state,which can enhance performance of step motor and have good practical value.
Key words: two-phase hybrid step motor; SPWM; subdivded driving; FPGA