实验八直流电机开环控制实验

实验八直流电机开环控制实验提高部分：1、在分析掌握基于SST89E554RC微控制器实现直流电机控制电路原理基础上，实现电机速度可调；本程序利用ADC0808采样来改变PWM波，从而实现电机的无极调速。【电路原理图protues】LUEUEUEUELUELUEUEU2(CLOCK)—LED-BLUEk‘XTAL1182030-3^12345678XTAL2RSTPSENATEEAP1.0P1.1P1.2P1.3P1.4P1.5P1.6P0.0/AD0P0.1/AD1P0.2/AD2P0.3/AD3P0.4/AD4P0.5/AD5P0.6/AD6P0.7/AD7P2.0/A8P2.1/A9P2.2/A10P2.3/A11P2.4/A12P2.5/A13P2.6/A14P2.7/A15P3.0LUEUEUEUELUELUEUEU2(CLOCK)—LED-BLUEk‘XTAL1182030-3^12345678XTAL2RSTPSENATEEAP1.0P1.1P1.2P1.3P1.4P1.5P1.6P0.0/AD0P0.1/AD1P0.2/AD2P0.3/AD3P0.4/AD4P0.5/AD5P0.6/AD6P0.7/AD7P2.0/A8P2.1/A9P2.2/A10P2.3/A11P2.4/A12P2.5/A13P2.6/A14P2.7/A15P3.0/RXDP3.1/TXDP3.2/INT0P3.3/INT1P3.4/T0P3.5/T1P3.6/WR383736353433322

ADAD5

AD6AD一AD'AD71AD20AD59AD18AD38AD25AD14AD07CLOCKIN0STARTIN1EOCIN2IN3OUT1IN4IN5OUT2IN6OUT3IN7OUT4OUT5ADDAOUT6ADDBOUT7ADDCOUT8ALEOEVREF(+)VREF()^5^"2^22'1''1216pp-^1234ADC0808+88.8AT89C51net=AD9【C代码】//////////////////adc-motor.c///////////////////////#include<reg51.h>#defineT_value(unsignedchar)0xff//T周期值#defineTL0_value(unsignedchar)0xe7//定时器T0计数值(低)sbitpwm二P3八3;sbitoe二P3入2；sbitstart二P3入0;sbiteoc=P3"1;unsignedcharT_Count,T1_value=0x77,Tx;////////////////////Delay()/////////////////////////////voidDelay(){unsignedchari;for(i=0;i<200;i++);///////////////time中断，重新赋初值并减T_Count////////////voidint_tim0()interrupt1{if(T1_value==0x00)pwm=0;elseif(T1_value==0xff)pwm=1;else{T_Count--;if(T_Count==0) //跳变{pwm=~pwm;Tx=T_value-Tx;T_Count=Tx;}}}////终于到ADC这郁闷孩子的时候//////////////////////////////voidad_pwm(){unsignedchargetdata;oe=0;start=0;start=1;start=0;while(eoc==0);oe=1;getdata=P0;oe=0;P1=getdata;if(getdata!=T1_value){T1_value=getdata;Tx=T_Count=T1_value;pwm=1;}//if(T1_value==0x00)pwm=0;//elseif(T1_value==0xff)pwm=1;}////////主函数main.c////////////////////////////////////////voidmain(){T_Count=T1_value;Tx=T1_value;TM