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} else

if(Left_2_led==0&&Right_1_led==1)

{

backrun(); delay(500); rightrun(); delay(500); } else

if(Right_1_led==0&&Left_2_led==1)

{

backrun(); delay(500); leftrun(); delay(500); } else { run(); }

if(Im[2]==0x16) {

stoprun(); goto loop;

break;

case 0x1a:backrun();

break;

case

0x0a:leftrun();delay(5);stoprun();delay(2);

case

0x1e:rightrun();delay(5);stoprun();delay(2);

{

break;

case 0x05:stoprun();

break;

break;

case 0x16:

stoprun(); goto loop; } } }break;

case 0x19:

{

}}} break; case 0x1b:

{

delay(100); run(); while(1) {

if(Left_2_led==0&&Right_1_l

ed==0)

{ run();

delay(100); lowrun(); while(1)

{ if(Left_1_led==1&&Right_

2_led ==0)

{

- 26 -

backrun(); delay(90); rightrun(); delay(90); } else

if(Left_1_led==0&&Right_2_led ==1)

{

backrun(); delay(90); leftrun();

delay(90); } else

{ lowrun();} if(Im[2]==0x16) {

stoprun(); goto loop; } }break;} }}}}

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ͼ2-6 ϵͳÕûÌåÉè¼ÆÁ÷³Ìͼ

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2.4Ö±Á÷С³µÐ¡½á

2.4.1˼¿¼Ìâ

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¢ÚÖ±Á÷С³µÈçºÎǰ½ø¡¢ºóÍË¡¢×óת¡¢ÓÒת¡¢ÔȼÓËÙ¡¢ÔȼõËÙ£¿Äܲ»ÄÜÉè¼ÆÒ»¸ö³ÌÐò£¬ÈÃС³µÔȼÓËÙ»òÔȼõËÙתÍ䣬»òÕß¾ùÔȼÓËÙ£¬ÔȼõËÙµ½×ªÍä¡£

ǰ½øÊ±Ð¡³µ×óÂÖÄæÊ±Õëת£¬ÓÒÂÖ˳ʱÕëת¡£ºóÍËʱ¸ÕºÃÏà·´¡£×óתʱ£¬×óÂÖ˳ʱÕëת£¬ÓÒÂÖ˳ʱÕëת¡£ÓÒתʱ¸ÕºÃÏà·´¡£

ÔȼÓËÙ»òÔȼõËÙʱ¿ÉÒÔͨ¹ý¸Ä±äPWM²¨µÄÕ¼¿Õ±È½øÐе÷ËÙ£¬ÆäºËÐÄ´úÂëÈçÏ£º ÔȼõËÙ£¬×îºóÔÈËÙ {

P2 = 0;

delay(t); P2 = 0xff; if(t>=90) }

t=90;

ÔȼÓËÙ×îºóÔÈËÙ {

P2 = 0; delay(t); P2 = 0xff; delay(t); if(t<=10) t=10; t=t-5;

}

delay(t);

t= t+5;

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