第五届飞思卡尔智能车电磁组获奖程序
#include <hidef.h> /* common defines and macros */
#include "derivative.h" /* derivative-specific definitions */
#include <stdio.h>
#include <MC9S12XS128.h>
#include <stdlib.h>
#include <math.h>
#pragma LINK_INFO DERIVATIVE "mc9s12xs128"
#define K 1
#define N 3
unsigned int i=0,j=0,m=0,n=0;
unsigned char str[]={'0'};
signed int b=0,c=0,d=0,e=0,f=0,g=0,spe=0,r=0,l,x3,y,z,x1,x2,x4;
int time;
int zd=0,flag;
int pp;
/////////////////////////////////////
//// 电机 PID 定义
/////////////////////////////////////
int SetPoint=0; //设定目标 Desired Value
int FeedBack=0;
float KKp=1.5; //比例常数 Proportional Const
float KKi=0;
float KKd=0.6; //微分常数 Derivative Const
signed int EE0=0; //当前误差
signed int EE1=0; //Error[-1]
signed int EE2=0; //Error[-2]
signed int EError0=0,EError1=0;
signed int iiIncpid=0;
int sp=0;
///////////////////////////////
/// 舵机 PID 定义
//////////////////////////////
float Kp=3; //比例常数 Proportional Const
float Ki=1;
float Kd=4.2; //微分常数 Derivative Const
signed int E0=0 ; //当前误差
signed int E1=0; //Error[-1]
signed int E2=0; //Error[-2]
signed int Error0=0,Error1=0;
signed int iIncpid=0;
/////////////////////////////////////
/////////////////////////////////////
//// 电机 PID
/////////////////////////////////////
////////////////////////////////////
unsigned int Getspeed(int cch1,int cch2 )
{
EE0=cch1-cch2; //增量计算
EError0=EE0-EE1;
EError1=EE1-EE2;
iiIncpid=(int)(KKi*EError0+KKp*EE0+KKd*(EError0-EError1));
EE1=EE0;
EE2=EE1; //存储误差,用于下次计算
sp+=iiIncpid;
if(sp>210)
sp=210;
if(sp<0)
sp=0;
return sp;
}
void sudu(int SetPoint)
{
pp=Getspeed(SetPoint,FeedBack);
PWMDTY2=pp;
}
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