C51的PID算法

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//PID算法温控C语言2008-08-17 18:58
) S5 V, a! ?7 h$ j1 @#include<w77e58.h>
#include<intrins.h>
. ^& k" S) G  M& F#include<math.h>
$ a5 A- z2 k$ d0 x: S5 E1 @. j/ s#include<string.h>
8 F' K% J  j/ @& ?2 i- ^struct PID {
unsigned int SetPoint; // 设定目标 Desired Value
unsigned int Proportion; // 比例常数 Proportional Const
5 r. d8 `( P% K* k3 ?" munsigned int Integral; // 积分常数 Integral Const
unsigned int Derivative; // 微分常数 Derivative Const
" W  @: v1 n& [: p8 u5 q% lunsigned int LastError; // Error[-1]
unsigned int PrevError; // Error[-2]
* Z9 `# i$ a. @" N, j/ Munsigned int SumError; // Sums of Errors
" j0 ~1 T: Y( D( o};
struct PID spid; // PID Control Structure
unsigned int rout; // PID Response (Output)
! |& V1 s! o% N+ F, runsigned 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;
: p2 J8 m! k& }/ D, aunsigned 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;
6 t' u6 {  F+ e0 D2 \unsigned char temper;
+ K4 ^) f+ K) @) _unsigned char i;
unsigned char j=0;
6 b7 ?* V1 `( junsigned int s;
) P( P$ x9 m3 R& r' N& b/***********************************************************
延时子程序,延时时间以12M晶振为准,延时时间为30us×time
" F- U& h  H5 x; I& n( E***********************************************************/
. w' ^; t/ v: H8 |6 ]void delay(unsigned char time)
: B' C+ H$ X, t6 N2 f( Z6 Z{
- c* r( w( a6 g+ Zunsigned char m,n;
% H0 d, j+ \& v- |3 H  Tfor(n=0;n<time;n++)
for(m=0;m<2;m++){}
}
4 [' `" `' m; K. ?* c3 z/***********************************************************
) @- [' O* X+ X7 g. c/ \, F写一位数据子程序
8 b+ |& @, e& S6 @4 S4 V4 v***********************************************************/
" W( c& Y" `4 P& [  v2 U

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bbxyliyang01

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