PID closed loop

[dukefan93]

My objective is to create a closed loop speed controller but like a guy said on one of his posts there all on the toolkit but I do not have the toolkit. I also can not afford the toolkit in my budget. 

[RavensFan]

Do you have a question?

[GerdW]

Hi duke,

maybe you team up with Gotti?

[AndyClegg]

You can easily code a PI or PID controller without the toolkit - when it is written in a form for sampled data (discrete time) then it is quite simple.

Search for "incremental PID controller" and I'm sure you'll find the simple equation to implement within a timed loop (assuming you are wanting to control something real / realtime, and the controller you want is PI/PID).

You might need to add some additional software functionality to keep it working well - e.g. limits, anti-windup, rate limits, filters - but depends upon your application.