基于15单片机的步进电机驱动平台通用系统设计

摘要

This paper explains how to use the two step motors with driving chip ULN2803 and A3967SLB to control two step motors with different precisions. In order to achieve reverse rotation and forward rotation, A3967SLB controls its ports DIR, MSI, STEP based on its logic timing. On the other hand, ULN2803 controls stepper motor according to the excitation table. Both of the two different control methods can control the horizontal direction, and the vertical direction. In this way, we can make a general system based on 15 Single Chip Micro-computer.%本文通过两个步进电机驱动芯片ULN2803和A3967SLB来控制两个不同精度的步进电机。其中A3967SLB根据其逻辑时序来控制其端口DIR、MSI、STEP，从而实现正转和反转；ULN2803按照励磁表的顺序激励步进电机，这样也可以实现正转和反转。这两种不同的控制方式一个实现水平方向的控制，另一个实现垂直方向的控制，从而实现一种以STC15F2K60S2为主控芯片的通用控制平台。