计算机控制直流电机闭环调速实验,直流电机PWM闭环控制实验(完整的C51程序)

原标题：直流电机PWM闭环控制实验(完整的C51程序)

C源代码：

#include

/*定义字型字位口*/

#define DIGPORT P2

#define WORDPORT P0

/*定义键盘口*/

#define KEYPORT P1

#define uint unsigned int

#define uchar unsigned char

#define uong unsigned long

sbit P_7=P3^7; //信号输出

bit OVER;

uint k,dt;

uong KEYNUM;

uchar qu,NUM;

void Delay(uint ms)

{

while(--ms);

}

void timer0(void) 1 using 1

{

TL0=-(10248%256);

TH0=-(10248%256);

NUM+=1;

if(NUM>=10){

TR1=0;

TR0=0;

OVER=1;

}

}

uint CK(void)

{

uint number=0;

P_7=1;

OVER=0;NUM=0;

EA=1;ET0=1;

TH0=(10203/256);

TH0=(10203%256);

TH1=0;

TL1=0;

TMOD=0x51;

TR0=1;

TR1=1;

Delay(dt);

P_7=0;

while (!OVER);

OVER=0;

number=TH1*256+TL1;

return(number);

}

void Display_(uong nu)

{

uint ii=0;

uong aa,bb;

uint xx[]={-0x10,-0x10,-0x10,-0x10,-0x10,-0x10,-0x10,-0x10};

do

{

bb=nu/10;

aa=nu-bb*10;

xx[ii]=aa;

nu=bb;ii++;

}while(nu>0);

DIGPORT=0xf0; WORDPORT=0x30+xx[0];

DIGPORT=0xf1; WORDPORT=0x30+xx[1];

DIGPORT=0xf2; WORDPORT=0x30+xx[2];

DIGPORT=0xf3; WORDPORT=0x30+xx[3];

DIGPORT=0x0f; WORDPORT=0x30+xx[4];

DIGPORT=0x1f; WORDPORT=0x30+xx[5];

DIGPORT=0x2f; WORDPORT=0x30+xx[6];

DIGPORT=0x3f; WORDPORT=0x30+xx[7];

}

void getkey()

{

qu=0;k=0;

KEYNUM=0;

do

{

switch(KEYPORT)

{

case 0xbd:

KEYNUM=KEYNUM*10;

break;

case 0xf6:

KEYNUM=KEYNUM*10+1;

break;

case 0xf5:

KEYNUM=KEYNUM*10+2;

break;

case 0xf3:

KEYNUM=KEYNUM*10+3;

break;

case 0xee:

KEYNUM=KEYNUM*10+4;

break;

case 0xed:

KEYNUM=KEYNUM*10+5;

break;

case 0xeb:

KEYNUM=KEYNUM*10+6;

break;

case 0xde:

KEYNUM=KEYNUM*10+7;

break;

case 0xdd:

KEYNUM=KEYNUM*10+8;

break;

case 0xdb:

KEYNUM=KEYNUM*10+9;

break;

case 0xbe:

KEYNUM=KEYNUM/10;

break;

case 0xbb:

qu=1;

}

Delay(6000);

Delay(6000);

Delay(6000);

Delay(6000);

Delay(6000);

Delay(6000);

Delay(6000);

Delay(6000);

if(KEYNUM>100000000) break;

Display_LED(KEYNUM);

}while(qu==0);

}

void main(void)

{

uong f;

P_7=0;

dt=1000;

getkey();

for(;;){

f=0;

f=CK()*12;

Display_LED(f);

if((f>KEYNUM)&&(dt>100)) dt=dt-(f-KEYNUM)/10;

if((f

}

}

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