PID algorithm in pic microcontroller

[--BawA--]

hey, i want to implement PID algorithm to keep the output of DC DC converter stable, i am using PIC mcu . i use mikroc for coding. i know the fundamentals of PID algo ,but didn't know how to code the PID in C language. my refrence voltage is 3v and the dynamic voltage may vary from 1 to 4 v. according to the the dynamic voltage , i have to set a dutycycle such that the dynamic voltage should be equal to 3v, an anyone tell me a sample code or algo to proceed?

 

[barry]

PID is simply multiplications and additions. In a digital system it's a little more complicated because you need to convert your continuous function to a discrete-time one. There's lots of stuff on the web, I mean LOTS, about how to do this.

 

[--BawA--]

thanx barry ,i have searched web alot but didn't find any c code. can u give me any link where i can find some sample code of PID written in C language?

 

[barry]

You are using a PIC, right? It's made by Microchip, right? Maybe you should GO TO THE MICROCHIP WEBSITE AND DO A SEARCH!!!. Like I did. It took me all of 10 seconds to find this.

https://ww1.microchip.com/downloads/en/AppNotes/00937a.pdf