How to Write PID Control Algorithm Using C Language _ TipsWell

8/10/2019 How to Write PID Control Algorithm Using C Language _ TipsWell

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4/3/2014 How To Write PID control algorithm using C language | TipsWell.com

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How To Write PID control algorithm using C

language

How To Write PID control algorithm using C language

Today i am going to write PID control algorithm using C languageand how can you write your own PID controlalgorithmusing C language. The PID algorithmare basic and important in control engineeringfor example

motor control. simple example of PID algorithm is written below in C language with out put diagram.

[smartads] [smartads]

The Matlab simulation of the PID algorithm to control the DC motor

#ifndef PID_H_

#define PID_H_

#include

//Define parameter

#define epsilon 0.01

#define dt 0.01 //100ms loop time

#define MAX 4 //For Current Saturation

#define MIN -4
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#define Kp 0.1

#define Kd 0.01

#define Ki 0.005

float PIDcal(float setpoint,float actual_position)

{

static float pre_error = 0;

static float integral = 0; float error;

float derivative;

float output;

//Caculate P,I,D

error = setpoint - actual_position;

//In case of error too small then stop integration

if(abs(error) > epsilon)

{

integral = integral + error*dt;

}

derivative = (error - pre_error)/dt;

output = Kp*error + Ki*integral + Kd*derivative;

//Saturation Filter

if(output > MAX)

{

output = MAX; }

else if(output < MIN)

{

output = MIN;

}

//Update error

pre_error = error;

return output;

}

#endif /*PID_H_*/

after that embed PID Code :- >>>>

function output = fcn(error)

%Declare static value

persistent pre_error;


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if isempty(pre_error)

pre_error = 0;

end

persistent integral;

if isempty(integral)

integral = 0;

end

%Constant Value

epsilon = 0.01;

dt = 0.01;

Kp = 5;

Kd = 3;

Ki = 0.01;

if(abs(error) > epsilon)

integral = integral + error*dt;

end

derivative = (error - pre_error)/dt;

output = Kp*error + Ki*integral + Kd*derivative;

pre_error = error;

Download Complete PID Control Algorithm Using C From Here >> Click Here


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This entry was posted in Education and tagged best pid controller, pi control algorithm, pid algorithm, pid closed

loop, pid control algorithm, pid control algorithm using c language, pid control using labview, pid controller

application, pid controllers on November 7, 2012 [http://tipswell.com/pid-control-algorithm-using-c-language.html]

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How to Write PID Control Algorithm Using C Language _ TipsWell