基于51单片机的步进电机驱动器

: MOV P1,#0B0H

MOV 20H,#08H

MOV 21H,#10H

AJMP QUIT

LOOP3: MOV P1,#030H

MOV 20H,#10H

MOV 21H,#08H

AJMP QUIT

LOOP4: MOV P1

,#070H

MOV 20H,#20H

MOV 21H,#04H

AJMP QUIT

LOOP5: MOV P1,#060H

MOV 20H,#40H

MOV 21H,#02H

AJMP QUIT

LOOP6: MOV P1,#0E0H

MOV 20H,#80H

MOV 21H,#01H

AJMP QUIT

LOOP7: MOV P1,#0C0H

MOV 20H,#01H

MOV 21H,#80H

AJMP QUIT

;***************电机反转*****************

FAN: JB 08H,LOOQ0

JB 09H,LOOQ1

JB 0AH,LOOQ2

JB 0BH,LOOQ3

JB 0CH,LOOQ4

JB 0DH,LOOQ5

JB 0EH,LOOQ6

JB 0FH,LOOQ7

LOOQ0: MOV P1,#0A0H

MOV 21H,#02H

MOV 20H,#40H

AJMP QUIT

LOOQ1: MOV P1,#0E0H

MOV 21H,#04H

MOV 20H,#20H

AJMP QUIT

LOOQ2: MOV P1,#0C0H

MOV 21H,#08H

MOV 20H,#10H

AJMP QUIT

LOOQ3: MOV P1,#0D0H

MOV 21H,#10H

MOV 20H,#08H

AJMP QUIT

LOOQ4: MOV P1,#050H

MOV 21H,#20H

MOV 20H,#04H

AJMP QUIT

LOOQ5: MOV P1,#070H

MOV 21H,#40H

MOV 20H,#02H

AJMP QUIT

LOOQ6: MOV P1,#030H

MOV 21H,#80H

MOV 20H,#01H

AJMP QUIT

LOOQ7: MOV P1,#0B0H

MOV 21H,#01H

MOV 20H,#80H

QUIT: RETI

END

4.结论

该驱动器经实验验证能驱动0.5N.m的步进电机。将驱动部分的电阻、电容及续流二极管的有关参数加以调整，可驱动1.2N.m的步进电机。该驱动器电路简单可靠，结构紧凑，对于I/O口线与单片机资源紧张的系统来说特别适用。