C51的PID算法

awesome

//PID算法温控C语言2008-08-17 18:58
#include<w77e58.h>
6 a7 s3 p9 o$ b0 G! c8 h/ M#include<intrins.h>
#include<math.h>
0 w5 i; x0 C. \/ @3 S% R. ?#include<string.h>
  [  ^0 e3 A  l7 ~. _" m8 @struct PID {
" [, r+ m* A4 qunsigned int SetPoint; // 设定目标 Desired Value
unsigned int Proportion; // 比例常数 Proportional Const
unsigned int Integral; // 积分常数 Integral Const
' u! U9 ?+ m! n: Y% }4 u+ H, Xunsigned int Derivative; // 微分常数 Derivative Const
unsigned int LastError; // Error[-1]
/ ~+ X/ b$ f- G) \unsigned int PrevError; // Error[-2]
unsigned int SumError; // Sums of Errors
};
1 ]& N& J+ N/ Cstruct PID spid; // PID Control Structure
unsigned int rout; // PID Response (Output)
& g2 Z9 a: N  Y# Lunsigned int rin; // PID Feedback (Input)
: q+ Q, T- {* g8 M. rsbit data1=P1^0;
sbit clk=P1^1;
0 e( \# R# y- [# h# p( Usbit plus=P2^0;
sbit subs=P2^1;
; v" S0 s( N$ }+ _, C5 Csbit stop=P2^2;
! H' r+ P/ F  o- E; N7 x8 vsbit output=P3^4;
sbit DQ=P3^3;
unsigned char flag,flag_1=0;
unsigned char high_time,low_time,count=0;//占空比调节参数
unsigned char set_temper=35;
unsigned char temper;
unsigned char i;
unsigned char j=0;
unsigned int s;
/***********************************************************
延时子程序,延时时间以12M晶振为准,延时时间为30us×time
***********************************************************/
void delay(unsigned char time)
{
5 R2 q* c# s! f8 h7 h  K2 Sunsigned char m,n;
for(n=0;n<time;n++)
+ {  [4 Y* v6 _* `8 q- d3 Rfor(m=0;m<2;m++){}
}
/***********************************************************
+ e. ?/ N' k; a! |& v( X7 F写一位数据子程序
***********************************************************/
0 Y; ~  M( B. j0 O& N% t! Y

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bbxyliyang01

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