SKDY.rar_数控_数控 电源_数控电源_电源

#include"c8051f020.h" #include"intrins.h" #include"my.h" #include<string.h> #include<stdio.h> #define SYSCLK 22118400 #define SAMPLERATE 5000 xdata unsigned char text1[32]={"数控恒流源"}; xdata unsigned char text2[32]={"设定电流: 20mA"}; xdata unsigned char text3[32]={"实测电流: mA"}; xdata unsigned char text4[32]={"设定电流: 20mA"}; xdata unsigned char text5[32]={"设定的电流值过大"}; xdata unsigned char text6[32]={"请重新输入！"}; struct PID { float SetPoint; // 设定目标Desired value float Proportion; // 比例常数Proportional Const float Integral; // 积分常数Integral Const float Derivative; // 微分常数Derivative Const float LastError; // Error[-1] float PrevError; // Error[-2] float SumError; // Sums of Errors }sPID; //struct PID sPID; /***PID控制结构体***/ float rOut; /***PID ***/ float rIn; /***PID ***/ unsigned long sum=0; float vc0,vc1; float DA_data; xdata unsigned sample[200]; unsigned char flag=0; //unsigned int Dliu; unsigned char qw,bw,sw,gw; void SysclkInit(void) { unsigned int i; OSCXCN=0x67; for(i=0;i<256;i++); while(!(OSCXCN&0x80)); OSCICN=0x88; } void PortInit(void) { XBR2=0x40; P0MDOUT=0xff; P1MDOUT=0xff; P2MDOUT=0xff; P3MDOUT=0xff; P74OUT=0xff; } void Delay(void) { unsigned char i; for(i=0;i<100;i++); } void ADC0Init(void) { ADC0CN=0x04; //ADC0禁止；正常工作模式；定时器3溢出ADC0转换开始；ADC0转换数据右对齐 REF0CN=0x07; //使能温度传感器，片内VREF，和VREF输出缓冲器 AMX0SL=0x00; //选择AIN0作为ADC多路转换输出 ADC0CF=(SYSCLK/2500000)<<3; //ADC转换时钟2.5MHZ ADC0CF&=~0x07; //PGA增益=1 EIE2&=~0x02; //禁止ADC0中断 AD0EN=1; //使能ADC0 } void DAC1Init(void) { REF0CN=0x03; DAC1CN=0x80; } void Timer3Init(int counts) { TMR3CN=0x02; //停止定时器3；清除TF3；使用系统时钟作为时基 TMR3RL=-counts; //初始化重装值 TMR3=0xffff; //立即开始重装 EIE2&=~0x01; //禁止定时器3中断 TMR3CN|=0x04; //启动定时器3 } /*************PID计算部分**************/ unsigned long PIDCalc(struct PID*pp,double NextPoint)/*** ***/ { float dError,Error ; Error=pp->SetPoint-NextPoint ; /***偏差***/ pp->SumError+=Error ; /***积分***/ dError =pp->LastError -pp-> PrevError ; /***当前微分***/ pp->PrevError=pp-> LastError; /*** ***/ pp-> LastError=Error; /*** ***/ return( pp->Proportion *Error /***比例项***/ +pp->Integral * pp->SumError /***积分项***/ +pp->Derivative* dError ); /***微分项***/ } /************初始化PID参数***************/ void PIDInit(struct PID*pp) /*** ***/ { memset( pp,0,sizeof(struct PID)); /*** ***/ } void Change(unsigned int i) { qw=i%10000/1000; bw=i%1000/100; sw=i%100/10; gw=i%10; } void Fuzhi() { if(qw==0) text2[10]=' '; else { text2[10]=qw+0x30; } if (qw==0&&bw==0) text2[11]=' '; else { text2[11]=bw+0x30; } if (qw==0&&bw==0&&sw==0) text2[12]=' '; else { text2[12]=sw+0x30; } if (qw==0&&bw==0&&sw==0&&gw==0) strcpy(text2,text4); else { text2[13]=gw+0x30; } } void DAC_calnum() { DA_data=((vc0-4.83)/2436.17)*4095; } void DAC_setnum() { DAC1L=(unsigned int ) DA_data; DAC1H=((unsigned int)DA_data)>>8; } void ADC_getnum() { unsigned char j; EA=1; EIE2|=0x02; while(!flag); flag=0; for(j=0;j<200;j++) sum=sum+sample[j]; sum=sum/200; if(Dliu<249) vc1=(((float)sum)/4095)*2430+4.8-5.5; else if(Dliu<749) vc1=(((float)sum)/4095)*2430+4.8-6.8; else if(Dliu<1050) vc1=(((float)sum)/4095)*2430+4.8-7.9; else if(Dliu<1450) vc1=(((float)sum)/4095)*2433+4.8-10.6; else if(Dliu<1650) vc1=(((float)sum)/4095)*2433+4.8-11.8; else vc1=(((float)sum)/4095)*2435+4.8-15.7; } void ADC0_ISR(void) interrupt 15 using 3 { static unsigned char i=0; AD0INT=0; //清除ADC0转换结束标志 sample[i]=ADC0; //读和存储ADC0值 i++; if(i==200) { flag=1; i=0; EA=0; EIE2&=~0x02; } } void main(void) { float Idealv; WDTCN=0xde; WDTCN=0xad; SysclkInit(); PortInit(); Timer3Init(SYSCLK/SAMPLERATE); ADC0Init(); DAC1Init(); PIDInit(&sPID); /***结构初始化***/ sPID. Proportion=0.0; /***PID参数设置***/ sPID.Integral=1.0; /*** ***/ sPID.Derivative=0.0; /*** ***/ sPID.SetPoint=0.0; /*** ***/ vc0=20*1.18974; Idealv=vc0; DAC_calnum(); DAC_setnum(); Delay(); ADC_getnum(); LcdInit(); LcdClear(); LcdShow(1,1,text1); LcdShow(2,0,text2); LcdShow(3,0,text3); while(1) { keydown(); if(Fkey) { Fkey=0; Change(Dliu); Fuzhi(); if(Dliu>=2490) { LcdClear(); LcdShow(1,1,text1); LcdShow(2,0,text2); LcdShow(3,0,text5); LcdShow(4,0,text6); Dliu=0; vc0=20*1.18974; Idealv=vc0; DAC_setnum(); Delay(); ADC_getnum(); } else { if(!Dliu) vc0=20*1.18974; else vc0=(float)Dliu*1.18974; Idealv=vc0; DAC_setnum(); Delay(); ADC_getnum(); LcdClear(); LcdShow(1,1,text1); LcdShow(2,0,text2); LcdShow(3,0,text3); DAC_calnum(); DAC_setnum(); Delay(); ADC_getnum(); } if(Clr==1) { Clr=0; Dliu=0; } } ADC_getnum(); /* if(vc1-Idealv>0.8) { DA_data=DA_data-1.0; DAC_setnum(); Delay(); ADC_getnum(); } if(Idealv-vc1>0.8) { DA_data=DA_data+1.0; DAC_setnum(); Delay(); ADC_getnum(); } */ } }