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標(biāo)題: 單片機(jī)控制直流電機(jī)，怎么調(diào)速度方向 [打印本頁(yè)]

作者: 彭澤陽(yáng) 時(shí)間: 2019-4-1 11:28
標(biāo)題: 單片機(jī)控制直流電機(jī)，怎么調(diào)速度方向
#include "stc15.h"
#include "intrins.h"
#include "config.h"

#define CYCLE 0x1000L    //定義PWM周期(最大值為32767)
unsigned char DUTY  =  20L;       //定義占空比為10%

  void Delay30ms() //@11.0592MHz
{
unsigned char i, j, k;

_nop_();
_nop_();
i = 2;
j = 67;
k = 183;
do
{
do
{
while (--k);
} while (--j);
} while (--i);
}

void UartInit(void) //9600bps@11.0592MHz
{
PCON &= 0x7F; //波特率不倍速
SCON = 0x50; //8位數(shù)據(jù),可變波特率
AUXR &= 0xBF; //定時(shí)器1時(shí)鐘為Fosc/12,即12T
AUXR &= 0xFE; //串口1選擇定時(shí)器1為波特率發(fā)生器
TMOD &= 0x0F; //清除定時(shí)器1模式位
TMOD |= 0x20; //設(shè)定定時(shí)器1為8位自動(dòng)重裝方式
TL1 = 0xFD; //設(shè)定定時(shí)初值
TH1 = 0xFD; //設(shè)定定時(shí)器重裝值
ET1 = 0; //禁止定時(shí)器1中斷
TR1 = 1; //啟動(dòng)定時(shí)器1
}

void SndData(unsigned char dat)
{
SBUF = dat;
while(!TI);
TI = 0;
}

unsigned char TmpData;

void main()
{
UartInit();

P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;

P_SW2 |= 0x80;             //使能訪問(wèn)XSFR
PWMCFG = 0x00;                //配置PWM的輸出初始電平為低電平
PWMCKS = 0x00;                //選擇PWM的時(shí)鐘為Fosc/(0+1)
PWMC = CYCLE;                //設(shè)置PWM周期
PWM2T1 = 0x0000;             //設(shè)置PWM2第1次反轉(zhuǎn)的PWM計(jì)數(shù)
PWM2T2 = CYCLE * DUTY / 100; //設(shè)置PWM2第2次反轉(zhuǎn)的PWM計(jì)數(shù)

PWM3T1 = 0x0000;             //設(shè)置PWM2第1次反轉(zhuǎn)的PWM計(jì)數(shù)
PWM3T2 = CYCLE * 20 / 100; //設(shè)置PWM2第2次反轉(zhuǎn)的PWM計(jì)數(shù)

PWM4T1 = 0x0000;             //設(shè)置PWM2第1次反轉(zhuǎn)的PWM計(jì)數(shù)
PWM4T2 = CYCLE * 20 / 100; //設(shè)置PWM2第2次反轉(zhuǎn)的PWM計(jì)數(shù)

                                 //占空比為(PWM2T2-PWM2T1)/PWMC
PWM2CR = 0x00;                //選擇PWM2輸出到P3.7,不使能PWM2中斷
PWM3CR = 0x00;                //選擇PWM3輸出到P3.7,不使能PWM2中斷
PWM4CR = 0x00;                //選擇PWM4輸出到P3.7,不使能PWM2中斷

PWMCR = 0x07;                //使能PWM信號(hào)輸出
PWMCR |= 0x80;                //使能PWM模塊
P_SW2 &= ~0x80;



Lun1Set1Xiang(2);
Lun1Set2Xiang(1);
Lun1Set3Xiang(2);

   SndData(DUTY);

while (1)
{
SetSpeed1(40);
SetSpeed2(10);
SetSpeed3(10);

/* if(!P17)
   {
   Delay30ms();
   if(!P17)
   {
      while(P17 == 0 );
      DUTY += 10L ;
   SndData(DUTY);
   if(DUTY >= 100) DUTY =0;

   SetSpeed2(DUTY);
   }
   } */

}

}
//tmpcycle范圍0~100
void SetSpeed1(unsigned char tmpcycle)
{
   P_SW2 |= 0x80;             //使能訪問(wèn)XSFR
   PWM2T1 = 0x0000;             //設(shè)置PWM2第1次反轉(zhuǎn)的PWM計(jì)數(shù)
   PWM2T2 = CYCLE * tmpcycle / 100; //設(shè)置PWM2第2次反轉(zhuǎn)的PWM計(jì)數(shù)
   P_SW2 &= ~0x80;
}

//tmpcycle范圍0~100
void SetSpeed2(unsigned char tmpcycle)
{
   P_SW2 |= 0x80;             //使能訪問(wèn)XSFR
   PWM3T1 = 0x0000;             //設(shè)置PWM2第1次反轉(zhuǎn)的PWM計(jì)數(shù)
   PWM3T2 = CYCLE * tmpcycle / 100; //設(shè)置PWM2第2次反轉(zhuǎn)的PWM計(jì)數(shù)
   P_SW2 &= ~0x80;
}
//tmpcycle范圍0~100
void SetSpeed3(unsigned char tmpcycle)
{
   P_SW2 |= 0x80;             //使能訪問(wèn)XSFR
   PWM4T1 = 0x0000;             //設(shè)置PWM2第1次反轉(zhuǎn)的PWM計(jì)數(shù)
   PWM4T2 = CYCLE * tmpcycle / 100; //設(shè)置PWM2第2次反轉(zhuǎn)的PWM計(jì)數(shù)
   P_SW2 &= ~0x80;
}

void Lun1Set1Xiang(unsigned char fangdat)
{
if(fangdat == 1)    {P04 = 1; P05 = 0;}
else if(fangdat == 2) {P04 = 0; P05 = 1;}
else    {P04 = 1; P05 = 1;}
}

void Lun1Set2Xiang(unsigned char fangdat)
{
if(fangdat == 1)    {P00 = 1; P01 = 0;}
else if(fangdat == 2) {P00 = 0; P01 = 1;}
else    {P00 = 1; P01 = 1;}
}

void Lun1Set3Xiang(unsigned char fangdat)
{
if(fangdat == 1)    {P02 = 1; P03 = 0;}
else if(fangdat == 2) {P02 = 0; P03 = 1;}
else    {P02 = 1; P03 = 1;}
}

作者: 笨笨兔 時(shí)間: 2019-4-1 12:49
調(diào)速就是提高PWM的占空比，改變方向需要H橋驅(qū)動(dòng)。
這應(yīng)該是早計(jì)劃好的吧！

歡迎光臨 (http://www.raoushi.com/bbs/)

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