基于LM3S615的二相步进电机控制系统

The Control System of Two-phase Stepper Motor Based on LM3s615

通过利用LM3S615单片机内部自带的PWM模块来实现对二相混合式步进电机进行细分驱动.由于LM3S615单片机内部的PWM模块由3个PWM发生器模块组成,并且每个PWM发生器模块可以产生两个PWM信号,可以同时控制3个二相混合式步进电机实现三轴运动.通过配置PWM模块,可以产生占空比不同的方波,从而在电机线圈内能够产生多种幅值不同的电流来实现细分驱动.

This article introduces the internal PWM module of LM3S615 microcontroller,and how to realize the subvision driving on two-phase hybrid stepping motor.As internal PWM generator module of the LM3S615 microcontroller consists of three modules,and Each PWM generator module can generate two PWM signals,it can simultaneously control the three two-phase hybrid stepping motor to achieve three-axis movement.By configuring PWM module can generate a different Duty cycle square wave,so can generate a variety of different current in motor coil to achieve sub-driver.