摘要
根据步进电机的转速与脉冲频率直接相关,通过恒流斩波、PWM脉冲调宽及细分控制方法,得到很好的输出效果.单片机开环控制步进电动机,进行速度调节、转向控制,介绍了STR672-080芯片控制四相步进电动机,实现16细分,使步进电动机近似匀速运动.同时对采用细分控制的精密注射泵进行实验精度测定,得到细分控制的平均精度达到99.9%以上.
According to the stepper motor speed and pulse frequency which is directly related, through the constant- current chopper, PWM pulse - width - modulated control method and the breakdown has been a very good output. Single - chip stepper motor open - loop control for speed adjustment, steering control, especially the introduction of the STR672 - 080 - chip four - phase stepper motor control, implementation 16 segments, so that stepper motor sports uniform approximation. At the same time, the adoption of subdivision control measured precision syringe pump. Be broken down to control the average accuracy of 99.9%.
出处
《机械与电子》
2009年第9期26-28,共3页
Machinery & Electronics
