❶ 哪位有溫度PID控制的c語言程序
#include <stdio.h>
#include<math.h>
struct _pid {
int pv; /*integer that contains the process value*/
int sp; /*integer that contains the set point*/
float integral;
float pgain;
float igain;
float dgain;
int deadband;
int last_error;
};
struct _pid warm,*pid;
int process_point, set_point,dead_band;
float p_gain, i_gain, d_gain, integral_val,new_integ;;
/*------------------------------------------------------------------------
pid_init
DESCRIPTION This function initializes the pointers in the _pid structure
to the process variable and the setpoint. *pv and *sp are
integer pointers.
------------------------------------------------------------------------*/
void pid_init(struct _pid *warm, int process_point, int set_point)
{
struct _pid *pid;
pid = warm;
pid->pv = process_point;
pid->sp = set_point;
}
/*------------------------------------------------------------------------
pid_tune
DESCRIPTION Sets the proportional gain (p_gain), integral gain (i_gain),
derivitive gain (d_gain), and the dead band (dead_band) of
a pid control structure _pid.
------------------------------------------------------------------------*/
void pid_tune(struct _pid *pid, float p_gain, float i_gain, float d_gain, int dead_band)
{
pid->pgain = p_gain;
pid->igain = i_gain;
pid->dgain = d_gain;
pid->deadband = dead_band;
pid->integral= integral_val;
pid->last_error=0;
}
/*------------------------------------------------------------------------
pid_setinteg
DESCRIPTION Set a new value for the integral term of the pid equation.
This is useful for setting the initial output of the
pid controller at start up.
------------------------------------------------------------------------*/
void pid_setinteg(struct _pid *pid,float new_integ)
{
pid->integral = new_integ;
pid->last_error = 0;
}
/*------------------------------------------------------------------------
pid_bumpless
DESCRIPTION Bumpless transfer algorithim. When suddenly changing
setpoints, or when restarting the PID equation after an
extended pause, the derivative of the equation can cause
a bump in the controller output. This function will help
smooth out that bump. The process value in *pv should
be the updated just before this function is used.
------------------------------------------------------------------------*/
void pid_bumpless(struct _pid *pid)
{
pid->last_error = (pid->sp)-(pid->pv);
}
/*------------------------------------------------------------------------
pid_calc
DESCRIPTION Performs PID calculations for the _pid structure *a. This function uses the positional form of the pid equation, and incorporates an integral winp prevention algorithim. Rectangular integration is used, so this function must be repeated on a consistent time basis for accurate control.
RETURN VALUE The new output value for the pid loop.
USAGE #include "control.h"*/
float pid_calc(struct _pid *pid)
{
int err;
float pterm, dterm, result, ferror;
err = (pid->sp) - (pid->pv);
if (abs(err) > pid->deadband)
{
ferror = (float) err; /*do integer to float conversion only once*/
pterm = pid->pgain * ferror;
if (pterm > 100 || pterm < -100)
{
pid->integral = 0.0;
}
else
{
pid->integral += pid->igain * ferror;
if (pid->integral > 100.0)
{
pid->integral = 100.0;
}
else if (pid->integral < 0.0) pid->integral = 0.0;
}
dterm = ((float)(err - pid->last_error)) * pid->dgain;
result = pterm + pid->integral + dterm;
}
else result = pid->integral;
pid->last_error = err;
return (result);
}
void main(void)
{
float display_value;
int count=0;
pid = &warm;
// printf("Enter the values of Process point, Set point, P gain, I gain, D gain \n");
// scanf("%d%d%f%f%f", &process_point, &set_point, &p_gain, &i_gain, &d_gain);
process_point = 30;
set_point = 40;
p_gain = (float)(5.2);
i_gain = (float)(0.77);
d_gain = (float)(0.18);
dead_band = 2;
integral_val =(float)(0.01);
printf("The values of Process point, Set point, P gain, I gain, D gain \n");
printf(" %6d %6d %4f %4f %4f\n", process_point, set_point, p_gain, i_gain, d_gain);
printf("Enter the values of Process point\n");
while(count<=20)
{
scanf("%d",&process_point);
pid_init(&warm, process_point, set_point);
pid_tune(&warm, p_gain,i_gain,d_gain,dead_band);
pid_setinteg(&warm,0.0); //pid_setinteg(&warm,30.0);
//Get input value for process point
pid_bumpless(&warm);
// how to display output
display_value = pid_calc(&warm);
printf("%f\n", display_value);
//printf("\n%f%f%f%f",warm.pv,warm.sp,warm.igain,warm.dgain);
count++;
}
}
以上程序僅供參考！
我畢業設計是PID溫控！不過是PLC的！看過一天PID控制演算法程序!
❷ 求溫度控製程序中按鍵的C語言
您好，這樣的：
if(keypress==true)檢測有鍵按下
{delay_us(50); 延遲50us，軟體濾波防抖動
if(keypress==true) 檢測有鍵被按下
key_value=P1;提取鍵值
{switch(key_value) 識別是那個鍵被按下了
case 0x01: XXX；break;
case 0x02:XXX;BREAK;進入對應工步或者動作即可。
......
}
}
}
❸ 跪求一溫度控制系統 包括原理圖和C語言程序
太難了沒有人會回答，我是好心給你說下。
❹ 求一份用C語言編寫控制溫度的程序，要求溫度控制在10度到30度之間
。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
用C語言寫？你的是單片機之類的吧，你就這樣問一句連個電路圖都沒有誰能
寫出來啊。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
再次表示無語。。。。。。。。。。。。。。。。。。。。。。。。。。。。
。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
❺ c語言的單片機控制的空調溫度控制系統的源程序
你沒有電路怎麼出程序啊，首先要有測溫的，設定溫度的，之後就是去控制壓縮機工作與否的。這些出來了就簡單了，只要讀出溫度---比較---控制壓縮機工作與否，這樣就能達到設定溫度的恆溫了
❻ 51單片機溫度控制系統的C語言程序
你好！
顯示用數碼管還是用液晶呢？人機對話，是和上位機通訊嗎
❼ 求一溫度控制的C語言程序
我做過DS18B20溫控設備，單匯流排感測這是一個不錯的選擇哦。下面是C語言程序，硬體接線如下：
（1）把「單片機系統」區域中的P0.0－P0.7用8芯排線連接到「動態數碼顯示」區域中的ABCDEFGH端子上。
（2）把「單片機系統」區域中的P2.0－P2.7用8芯排線連接到「動態數碼顯示」區域中的S1S2S3S4S5S6S7S8端子上。
（3）把DS18B20晶元插入「四路單匯流排」區域中的任一個插座中，注意電源與地信號不要接反。
（4）把「四路單匯流排」區域中的對應的DQ端子連接到「單片機系統」區域中的P3.7/RD端子上。
#include <REG52.h> //at89c52
#include <INTRINS.h>
unsigned char code displaybit[]={0xfe,0xfd,0xfb,0xf7,
0xef,0xdf,0xbf,0x7f};
unsigned char code displaycode[]={0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71,0x00,0x40};
unsigned char code dotcode[32]={0,3,6,9,12,16,19,22,
25,28,31,34,38,41,44,48,
50,53,56,59,63,66,69,72,
75,78,81,84,88,91,94,97};
unsigned char displaycount;
unsigned char displaybuf[8]={16,16,16,16,16,16,16,16};
unsigned char timecount;
unsigned char readdata[8];
sbit DQ=P3^7;
bit sflag;
bit resetpulse(void)
{
unsigned char i;
DQ=0;
for(i=255;i>0;i--);
DQ=1;
for(i=60;i>0;i--);
return(DQ);
for(i=200;i>0;i--);
}
void writecommandtods18b20(unsigned char command)
{
unsigned char i;
unsigned char j;
for(i=0;i<8;i++)
{
if((command & 0x01)==0)
{
DQ=0;
for(j=35;j>0;j--);
DQ=1;
}
else
{
DQ=0;
for(j=2;j>0;j--);
DQ=1;
for(j=33;j>0;j--);
}
command=_cror_(command,1);
}
}
unsigned char readdatafromds18b20(void)
{
unsigned char i;
unsigned char j;
unsigned char temp;
temp=0;
for(i=0;i<8;i++)
{
temp=_cror_(temp,1);
DQ=0;
_nop_();
_nop_();
DQ=1;
for(j=10;j>0;j--);
if(DQ==1)
{
temp=temp | 0x80;
}
else
{
temp=temp | 0x00;
}
for(j=200;j>0;j--);
}
return(temp);
}
void main(void)
{
TMOD=0x01;
TH0=(65536-4000)/256;
TL0=(65536-4000)%256;
ET0=1;
EA=1;
while(resetpulse());
writecommandtods18b20(0xcc);
writecommandtods18b20(0x44);
TR0=1;
while(1)
{
;
}
}
void t0(void) interrupt 1 using 0
{
unsigned char x;
unsigned int result;
TH0=(65536-4000)/256;
TL0=(65536-4000)%256;
if(displaycount==2)
{
P0=displaycode[displaybuf[displaycount]] | 0x80;
}
else
{
P0=displaycode[displaybuf[displaycount]];
}
P2=displaybit[displaycount];
displaycount++;
if(displaycount==8)
{
displaycount=0;
}
timecount++;
if(timecount==150)
{
timecount=0;
while(resetpulse());
writecommandtods18b20(0xcc);
writecommandtods18b20(0xbe);
readdata[0]=readdatafromds18b20();
readdata[1]=readdatafromds18b20();
for(x=0;x<8;x++)
{
displaybuf[x]=16;
}
sflag=0;
if((readdata[1] & 0xf8)!=0x00)
{
sflag=1;
readdata[1]=~readdata[1];
readdata[0]=~readdata[0];
result=readdata[0]+1;
readdata[0]=result;
if(result>255)
{
readdata[1]++;
}
}
readdata[1]=readdata[1]<<4;
readdata[1]=readdata[1] & 0x70;
x=readdata[0];
x=x>>4;
x=x & 0x0f;
readdata[1]=readdata[1] | x;
x=2;
result=readdata[1];
while(result/10)
{
displaybuf[x]=result%10;
result=result/10;
x++;
}
displaybuf[x]=result;
if(sflag==1)
{
displaybuf[x+1]=17;
}
x=readdata[0] & 0x0f;
x=x<<1;
displaybuf[0]=(dotcode[x])%10;
displaybuf[1]=(dotcode[x])/10;
while(resetpulse());
writecommandtods18b20(0xcc);
writecommandtods18b20(0x44);
}
}
Good luck!
❽ 求一個溫度控制的C語言源代碼
可以採用LM35 或者DS18B20來檢測都可以，在120度，最好採用LM35合適哦。控制加熱器的電壓採用PWM波來控制SSR驅動加熱器可以了。
❾ 溫度控制的PID演算法的C語言程序
//PID演算法溫控C語言2008-08-17 18:58
#include<reg51.h>
#include<intrins.h>
#include<math.h>
#include<string.h>
struct PID {
unsigned int SetPoint; // 設定目標 Desired Value
unsigned int Proportion; // 比例常數 Proportional Const
unsigned int Integral; // 積分常數 Integral Const
unsigned int Derivative; // 微分常數 Derivative Const
unsigned int LastError; // Error[-1]
unsigned int PrevError; // Error[-2]
unsigned int SumError; // Sums of Errors
};
struct PID spid; // PID Control Structure
unsigned int rout; // PID Response (Output)
unsigned int rin; // PID Feedback (Input)
sbit data1=P1^0;
sbit clk=P1^1;
sbit plus=P2^0;
sbit subs=P2^1;
sbit stop=P2^2;
sbit output=P3^4;
sbit DQ=P3^3;
unsigned char flag,flag_1=0;
unsigned char high_time,low_time,count=0;//占空比調節參數
unsigned char set_temper=35;
unsigned char temper;
unsigned char i;
unsigned char j=0;
unsigned int s;
/***********************************************************
延時子程序,延時時間以12M晶振為准,延時時間為30us×time
***********************************************************/
void delay(unsigned char time)
{
unsigned char m,n;
for(n=0;n<time;n++)
for(m=0;m<2;m++){}
}
/***********************************************************
寫一位數據子程序
***********************************************************/
void write_bit(unsigned char bitval)
{
EA=0;
DQ=0; /*拉低DQ以開始一個寫時序*/
if(bitval==1)
{
_nop_();
DQ=1; /*如要寫1，則將匯流排置高*/
}
delay(5); /*延時90us供DA18B20采樣*/
DQ=1; /*釋放DQ匯流排*/
_nop_();
_nop_();
EA=1;
}
/***********************************************************
寫一位元組數據子程序
***********************************************************/
void write_byte(unsigned char val)
{
unsigned char i;
unsigned char temp;
EA=0; /*關中斷*/
TR0=0;
for(i=0;i<8;i++) /*寫一位元組數據，一次寫一位*/
{
temp=val>>i; /*移位操作，將本次要寫的位移到最低位*/
temp=temp&1;
write_bit(temp); /*向匯流排寫該位*/
}
delay(7); /*延時120us後*/
// TR0=1;
EA=1; /*開中斷*/
}
/***********************************************************
讀一位數據子程序
***********************************************************/
unsigned char read_bit()
{
unsigned char i,value_bit;
EA=0;
DQ=0; /*拉低DQ，開始讀時序*/
_nop_();
_nop_();
DQ=1; /*釋放匯流排*/
for(i=0;i<2;i++){}
value_bit=DQ;
EA=1;
return(value_bit);
}
/***********************************************************
讀一位元組數據子程序
***********************************************************/
unsigned char read_byte()
{
unsigned char i,value=0;
EA=0;
for(i=0;i<8;i++)
{
if(read_bit()) /*讀一位元組數據，一個時序中讀一次，並作移位處理*/
value|=0x01<<i;
delay(4); /*延時80us以完成此次都時序，之後再讀下一數據*/
}
EA=1;
return(value);
}
/***********************************************************
復位子程序
***********************************************************/
unsigned char reset()
{
unsigned char presence;
EA=0;
DQ=0; /*拉低DQ匯流排開始復位*/
delay(30); /*保持低電平480us*/
DQ=1; /*釋放匯流排*/
delay(3);
presence=DQ; /*獲取應答信號*/
delay(28); /*延時以完成整個時序*/
EA=1;
return(presence); /*返回應答信號，有晶元應答返回0,無晶元則返回1*/
}
/***********************************************************
獲取溫度子程序
***********************************************************/
void get_temper()
{
unsigned char i,j;
do
{
i=reset(); /*復位*/
}while(i!=0); /*1為無反饋信號*/
i=0xcc; /*發送設備定位命令*/
write_byte(i);
i=0x44; /*發送開始轉換命令*/
write_byte(i);
delay(180); /*延時*/
do
{
i=reset(); /*復位*/
}while(i!=0);
i=0xcc; /*設備定位*/
write_byte(i);
i=0xbe; /*讀出緩沖區內容*/
write_byte(i);
j=read_byte();
i=read_byte();
i=(i<<4)&0x7f;
s=(unsigned int)(j&0x0f);
s=(s*100)/16;
j=j>>4;
temper=i|j; /*獲取的溫度放在temper中*/
}
/*====================================================================================================
Initialize PID Structure
=====================================================================================================*/
void PIDInit (struct PID *pp)
{
memset ( pp,0,sizeof(struct PID));
}
/*====================================================================================================
PID計算部分
=====================================================================================================*/
unsigned int PIDCalc( struct PID *pp, unsigned int NextPoint )
{
unsigned int dError,Error;
Error = pp->SetPoint - NextPoint; // 偏差
pp->SumError += Error; // 積分
dError = pp->LastError - pp->PrevError; // 當前微分
pp->PrevError = pp->LastError;
pp->LastError = Error;
return (pp->Proportion * Error//比例
+ pp->Integral * pp->SumError //積分項
+ pp->Derivative * dError); // 微分項
}
/***********************************************************
溫度比較處理子程序
***********************************************************/
compare_temper()
{
unsigned char i;
if(set_temper>temper)
{
if(set_temper-temper>1)
{
high_time=100;
low_time=0;
}
else
{
for(i=0;i<10;i++)
{ get_temper();
rin = s; // Read Input
rout = PIDCalc ( &spid,rin ); // Perform PID Interation
}
if (high_time<=100)
high_time=(unsigned char)(rout/800);
else
high_time=100;
low_time= (100-high_time);
}
}
else if(set_temper<=temper)
{
if(temper-set_temper>0)
{
high_time=0;
low_time=100;
}
else
{
for(i=0;i<10;i++)
{ get_temper();
rin = s; // Read Input
rout = PIDCalc ( &spid,rin ); // Perform PID Interation
}
if (high_time<100)
high_time=(unsigned char)(rout/10000);
else
high_time=0;
low_time= (100-high_time);
}
}
// else
// {}
}
/*****************************************************
T0中斷服務子程序，用於控制電平的翻轉 ,40us*100=4ms周期
******************************************************/
void serve_T0() interrupt 1 using 1
{
if(++count<=(high_time))
output=1;
else if(count<=100)
{
output=0;
}
else
count=0;
TH0=0x2f;
TL0=0xe0;
}
/*****************************************************
串列口中斷服務程序，用於上位機通訊
******************************************************/
void serve_sio() interrupt 4 using 2
{
/* EA=0;
RI=0;
i=SBUF;
if(i==2)
{
while(RI==0){}
RI=0;
set_temper=SBUF;
SBUF=0x02;
while(TI==0){}
TI=0;
}
else if(i==3)
{
TI=0;
SBUF=temper;
while(TI==0){}
TI=0;
}
EA=1; */
}
void disp_1(unsigned char disp_num1[6])
{
unsigned char n,a,m;
for(n=0;n<6;n++)
{
// k=disp_num1[n];
for(a=0;a<8;a++)
{
clk=0;
m=(disp_num1[n]&1);
disp_num1[n]=disp_num1[n]>>1;
if(m==1)
data1=1;
else
data1=0;
_nop_();
clk=1;
_nop_();
}
}
}
/*****************************************************
顯示子程序
功能：將占空比溫度轉化為單個字元，顯示占空比和測得到的溫度
******************************************************/
void display()
{
unsigned char code number[]={0xfc,0x60,0xda,0xf2,0x66,0xb6,0xbe,0xe0,0xfe,0xf6};
unsigned char disp_num[6];
unsigned int k,k1;
k=high_time;
k=k%1000;
k1=k/100;
if(k1==0)
disp_num[0]=0;
else
disp_num[0]=0x60;
k=k%100;
disp_num[1]=number[k/10];
disp_num[2]=number[k%10];
k=temper;
k=k%100;
disp_num[3]=number[k/10];
disp_num[4]=number[k%10]+1;
disp_num[5]=number[s/10];
disp_1(disp_num);
}
/***********************************************************
主程序
***********************************************************/
main()
{
unsigned char z;
unsigned char a,b,flag_2=1,count1=0;
unsigned char phil[]={2,0xce,0x6e,0x60,0x1c,2};
TMOD=0x21;
TH0=0x2f;
TL0=0x40;
SCON=0x50;
PCON=0x00;
TH1=0xfd;
TL1=0xfd;
PS=1;
EA=1;
EX1=0;
ET0=1;
ES=1;
TR0=1;
TR1=1;
high_time=50;
low_time=50;
PIDInit ( &spid ); // Initialize Structure
spid.Proportion = 10; // Set PID Coefficients
spid.Integral = 8;
spid.Derivative =6;
spid.SetPoint = 100; // Set PID Setpoint
while(1)
{
if(plus==0)
{
EA=0;
for(a=0;a<5;a++)
for(b=0;b<102;b++){}
if(plus==0)
{
set_temper++;
flag=0;
}
}
else if(subs==0)
{
for(a=0;a<5;a++)
for(b=0;a<102;b++){}
if(subs==0)
{
set_temper--;
flag=0;
}
}
else if(stop==0)
{
for(a=0;a<5;a++)
for(b=0;b<102;b++){}
if(stop==0)
{
flag=0;
break;
}
EA=1;
}
get_temper();
b=temper;
if(flag_2==1)
a=b;
if((abs(a-b))>5)
temper=a;
else
temper=b;
a=temper;
flag_2=0;
if(++count1>30)
{
display();
count1=0;
}
compare_temper();
}
TR0=0;
z=1;
while(1)
{
EA=0;
if(stop==0)
{
for(a=0;a<5;a++)
for(b=0;b<102;b++){}
if(stop==0)
disp_1(phil);
// break;
}
EA=1;
}
}
//DS18b20 子程序
#include <REG52.H>
sbit DQ=P2^1; //定義埠
typedef unsigned char byte;
typedef unsigned int word;
//延時
void delay(word useconds)
{
for(;useconds>0;useconds--);
}
//復位
byte ow_reset(void)
{
byte presence;
DQ=0; //DQ低電平
delay(29); //480us
DQ=1; //DQ高電平
delay(3); //等待
presence=DQ; //presence信號
delay(25);
return(presence);
} //0允許，1禁止
//從1-wire 匯流排上讀取一個位元組
byte read_byte(viod)
{
byte i;
byte value=0;
for (i=8;i>0;i--)
{
value>>=1;
DQ=0;
DQ=1;
delay(1);
if(DQ)value|=0x80;
delay(6);
}
return(value);
}
//向1-wire匯流排上寫一個位元組
void write_byte(char val)
{
byte i;
for (i=8;i>0;i--) //一次寫一個位元組
{
DQ=0;
DQ=val&0x01;
delay(5);
DQ=1;
val=val/2;
}
delay(5);
}
//讀取溫度
char Read_Temperature(void)
{
union{
byte c[2];
int x;
}temp;
ow_reset();
write_byte(0xcc);
write_byte(0xBE);
temp.c[1]=read_byte();
temp.c[0]=read_byte();
ow_reset();
write_byte(0xCC);
write_byte(0x44);
return temp.x/2;
}
❿ 溫度控制的單片機c程序
幾個if語句就搞定
SetData 設定溫度
MeaData 測量得到溫度
if((SetData==MeaData)||(SetData<MeaData))
{
....(相關操作)....
}