jifenfenlishipidkongzhiqi.txt

pid积分温度控制

/* 名称: float PIDprocess1 */ 
/* 功能: PID adjust */ 
/* 说明: */ 
/* 调用: */ 
/* 输入: float xdata *Yn, float xdata *Rn */ 
/* 返回值: deltaPn */ 
/*********************************************************/ 
float PIDprocess1() 
{ 
int data E_0; 
float data deltaPn,deltaPi,deltaPp,deltaPd,PsumCopy; 

E_0=SetTemperature1-CurrentTemperature1; 

if(abs(E_0)>Emax) 
{ 
deltaPp=(float)Kp*(E_0-E_11); 
deltaPd=(float)Kd*(E_0-2*E_11+E_21); 
// if(deltaPd>=dPdmax) deltaPd=0; 
deltaPn=deltaPp+deltaPd; 
} 
else 
{ 
if(abs(E_0)>E0) 
{ 
deltaPi=(float)Ki*E_0*(Emax-abs(E_0))/(Emax-E0); 
} 
else 
{ //小误差时的处理 
deltaPi=(float)Ki*E_0; 
// if(fabs(deltaPi)<dPimin) deltaPi=0; 
} 
deltaPp=(float)Kp*(E_0-E_11); 
deltaPd=(float)Kd*(E_0-2*E_11+E_21); 
// if(deltaPd>=dPdmax) deltaPd=0; 
deltaPn=deltaPp+deltaPi+deltaPd; 
} 

/* if(fabs(deltaPn)>dPmax) 
{ 
if(deltaPn>0) deltaPn=dPmax; 
else deltaPn=-dPmax; 
} */ 
Psum1+=deltaPn; 
PsumCopy=Psum1; 

if(PsumCopy>Pmax) PsumCopy=Pmax; 
if(PsumCopy<Pmin) PsumCopy=Pmin; 

E_21=E_11; 
E_11=E_0; 

return(PsumCopy); 
} 
/*********************************************************/ 
/* 名称: float PIDprocess2 */ 
/* 功能: PID adjust */ 
/* 说明: */ 
/* 调用: */ 
/* 输入: float xdata Yn, float xdata Rn */ 
/* 返回值: Psum2 */ 
/*********************************************************/ 
float PIDprocess2() 
{ 
int data E_0; 
float data deltaPn,deltaPi,PsumCopy; 

E_0=SetTemperature2-CurrentTemperature2; 

if(abs(E_0)>Emax) 
{ 
deltaPn=(float)Kp*(E_0-E_12)+(float)Kd*(E_0-2*E_12+E_22); 
} 
else 
{ 
if(abs(E_0)>E0) 
{ 
deltaPi=(float)Ki*E_0*(Emax-abs(E_0))/(Emax-E0); 
} 
else 
{ //小误差时的处理 
deltaPi=(float)Ki*E_0; 
} 
deltaPn=(float)Kp*(E_0-E_12)+deltaPi+(float)Kd*(E_0-2*E_12+E_22); 
} 

/* if(fabs(deltaPn)>dPmax) 
{ 
if(deltaPn>0) deltaPn=dPmax; 
else deltaPn=-dPmax; 
}*/ 
Psum2+=deltaPn; 
PsumCopy=Psum2; 

if(PsumCopy>Pmax) PsumCopy=Pmax; 
if(PsumCopy<Pmin) PsumCopy=Pmin; 

E_22=E_12; 
E_12=E_0; 

return(PsumCopy); 
}