基于51单片机的直流电机PWM闭环控制实验.doc

基于51单片机的直流电机PWM闭环控制实验 从光驱上拆了一个直流电机组件(这种服务器上用的光驱很难找)，有现成的码盘和光耦，给它配了一个板子很方便就成了我的直流电机的实验模块，再配上小键盘和显示模块，我的单片机闭环控制直流电机的一个实验装置就这样OK了。 先键入转速，按#键确认，开始启动电机，显示屏实时显示电机转速，可看到转速在所设数值上下摆动，最后稳定在20左右的摆幅。 其C语言程序如下：#include #define DIGPORT P2#define WORDPORT P0#define KEYPORT P1#define uint unsigned int#define uchar unsigned char#define uong unsigned longsbit P_7=P37;bit OVER;uint k,dt;uong KEYNUM; uchar qu,NUM;void Delay(uint ms) while(-ms);void timer0(void) interrupt 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_LED(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; xxii=aa; nu=bb;ii+; while(nu0); DIGPORT=0xf0; WORDPORT=0x30+xx0; DIGPORT=0xf1; WORDPORT=0x30+xx1; DIGPORT=0xf2; WORDPORT=0x30+xx2; DIGPORT=0xf3; WORDPORT=0x30+xx3; DIGPORT=0x0f; WORDPORT=0x30+xx4; DIGPORT=0x1f; WORDPORT=0x30+xx5; DIGPORT=0x2f; WORDPORT=0x30+xx6; DIGPORT=0x3f; WORDPORT=0x30+xx7;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(KEYNUM100000000) 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(fKEYNUM)&(dt100) dt=dt-(f-KEYNUM)/10; if(fKEYNUM)&(dt6400) dt=dt+(KEYNUM-f)/10; 为了您的安全，请只打开来源可靠的网址 打开网站取消来自: /52%5Fdiy/blog/item/65f7e9cacbc5ff44f21fe772.html 来自: 艺新工作室 第一分享: chzmount 时间: 2010-12-26 17:28 评论: 0条 投票: 0次 本贴分享: 1 累计分享: 7 共有0人发表观点.目前还没有互动观点，输入您的互动观点