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標(biāo)題: pwm直流電機(jī)調(diào)速 [打印本頁]

作者: haojiu 時(shí)間: 2016-12-13 13:48
標(biāo)題: pwm直流電機(jī)調(diào)速
最近做了一個(gè)pwm直流電機(jī)調(diào)速
下面是程序

#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
uchar num;
uint speed,count,gao_num=50,gao_count;
sbit lcdrs=P3^5;
sbit lcden=P3^4;
sbit jia_key=P3^0;
sbit jian_key=P3^1;
sbit kaiguan=P3^2;
sbit dianji=P1^0;
uchar code table[]={"0123456789"};
uchar code digit2[]={"speed: r/min"};
uchar code digit3[]={"Gao_count:    "};
void delay(uint z)
{
uint x;
for(x=z;x>0;x--) ;
// for(y=110;y>0;y--);
}

void write_com(uchar com)
{
lcdrs=0;
P0=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}

void write_date(uchar date)
{
lcdrs=1;
P0=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}

  void display()
{
   write_com(0x80+7);
   write_date(table[speed/100]);
   write_com(0x80+8);
   write_date(table[speed%100/10]);
   write_com(0x80+9);
   write_date(table[speed%10]);
   write_com(0x80+0x40+12);
   write_date(table[gao_num/10]);
   write_com(0x80+0x40+13);
   write_date(table[gao_num%10]);
   }

void init()
{
lcden=0;
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x00);
write_com(0x80);
for(num=0;num<15;num++)
   {
write_date(digit2[num]);
delay(5);
   }
   write_com(0x80+0x40);
for(num=0;num<15;num++)
   {
write_date(digit3[num]);
delay(5);
   }
TMOD=0x51;
TH0=(65536-10000)/256;
TL0=(65536-10000)%256; //12HZ  10ms 中斷一次
EA=1;
ET0=1;
TR0=1;
TR1=1;
TH1=0;
TL1=0;

}
void timer0() interrupt 1
{
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
count++;
gao_count++;//統(tǒng)計(jì)高電平的時(shí)間
}

void key()
{ /*啟動(dòng)和關(guān)閉電機(jī)*/
if(kaiguan==0)
   {
   dianji=1;
   }
else
   {
   dianji=0;
   }
/**按鍵加**/
    if(jia_key==0)//加速
   {
delay(5);
if(jia_key==0)
gao_num+=5; //按鍵每按下一次，加5已達(dá)到讓風(fēng)扇轉(zhuǎn)的更快
     if(gao_num>99) //當(dāng)gao_num加到100時(shí)，時(shí)間正好達(dá)到1s
gao_num=99;
while(!jia_key);

   }
/**按鍵減**/
   if(jian_key==0)//減速
{
        delay(5);
if(jian_key==0)
           {
   if(gao_num!=0)
      gao_num-=5;
   else
      gao_num=50;
while(!jian_key);
   }
      }
}
void qudong()
{ if(gao_count>99)
   gao_count=0;
  if(gao_count<gao_num)
dianji=1;//加速
  else
dianji=0;//減速
}
void main()
{
init();
dianji=0;
while(1)
{
   key();
   qudong();
   if(count>99)  //1s
      {  count=0;
   speed=(TH1*256+TL1)*60/7;
   TH1=0;
            TL1=0;
         }
   display();
}
}

作者: 用當(dāng)以致學(xué) 時(shí)間: 2017-8-3 08:55
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