三相步进电机在单片机的

三相步进电机在单片机的驱动电路
1、产生工作方式需要的时序脉冲； 2、控制步进电机的速度，使它始终遵循加速、匀速、减速的规律工作。


程序：#include#includeconst char zHzhuan[7]={0x06,0x04,0x05,0x01,0x03,0x02,0x00};const char fanzhuan[7]={0x06,0x02,0x03,0x01,0x05,0x004,0x00};const int time[5]={4000,3200,2400,1600,800};/*脉冲宽度：0.05m,0.04ms,0.03ms,0.02ms,0.01ms*/char num; /*将要转动的步数*/char direct; /*转动方向，0为反转，1为正转*/char num_run; /*已经转动的步数*/void main(void) { DDRA=0x07; TCCR1A=0x00; TCCR1B=0x09; TIMSK=0x10; SREG|=0x80; while(1) { ; }}#pragma interrupt_handler time1coma:5 void time1coma(void) { char i,j; if(num>9) { if(num_run5) OCR1A=time[num_run]; /*增速*/ else if(num_run>(num-5)) OCR1A=time[num-num_run];/*减速*/ } else { i=(num+1)/2; if(num_run(i)) OCR1A=time[num_run]; /*增速*/ else OCR1A=time[num-num_run]; /*减速*/ } if(num_run { j=num_run%6; if(direct==1) PORTA=zhzhuan[j]; else PORTA=fanzhuan[j]; num_run+=1; } else { OCR1A=0x0fa0;