摘要：针对多通道步进电机细分控制系统，设计了一套上位机控制程序。论文详细的介绍了上位机的功能及各子程序的实现方法，给出了部分关键程序的代码，上位机使用VC++的MSComm控件来实现与控制系统的通信，所设计的上位机界面友好，可以设定电机运行速度及方向、细分控制模式、电流给定等功能；并且上位机可以实时对系统进行监测。实验结果表明上位机能够对系统进行很好的控制和监测。
关键词：步进电机；上位机；MSComm控件； 细分
Abstract: According to subdivision control system of multichannel stepper motor, the paper designed a set of host computer program. The paper detailed introduced the function of PC program and the method of each [JP2]submodule, gave some key programs. The Host was realized by Microsoft communication control of VC[KG-1.5mm]+[KG-1.5mm]+[KG-1mm],[JP] the PC program was designed friendly, could set motor speed and direction, could give subdivision control mode and set given current; also could realized the realtime monitor to control system. The experimental results showed that the computer could control and realized monitor to the system well.
Key words: stepper motor；PC；mSComm；subdivision