PID without the D - Chief Delphi

Yeah After we decided not to do autonomous, the robot took matters into it's own hand. i'd bet it would get it's self DQ'd... or an award. - GMKlenklen [more]

		Chief Delphi > Technical > Programming
PID without the D

Thread Tools

Rate Thread

Display Modes

22-01-2008, 16:37

Alex.Norton Alex.Norton is offline

Fidgetting

no team

Join Date: Apr 2005

Rookie Year: 2003

Location: Ft. Collins, Colorado

Posts: 190

Re: PID without the D

I would think that doing a PI would be really unstable. The D part has the effect usually of dampening the I since the I will always overshoot the goal. Of course the instability will dampen itself over time because of friction in the system but I would agree that I have never seen a PI loop. Plenty of P+D and P-D and just P loops but never a PI loop.

What exactly is your reason for not using the derivative part of the loop?

« Previous Thread | Portal | Next Thread »

Thread Tools
Show Printable Version Email this Page
Display Modes	Rate This Thread
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode	Rate This Thread:

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts vB code is On Smilies are On [IMG] code is On HTML code is Off

Forum Jump

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Running the robot without a tether	Hiromi	Technical Discussion	3	05-10-2007 08:37
PID How to hold an arm in a fixed position without a locking gear box	Ian_Xodus	General Forum	29	28-01-2007 08:50
PID without a Ph.D.	Joe Johnson	Programming	3	07-02-2006 17:37
Emergency: PID with Wheels Off the Ground	Rick TYler	Programming	9	07-02-2006 11:37
Drive Straight C Code using Encoders without PID?	Chris_Elston	Programming	17	15-02-2005 23:41

All times are GMT -5. The time now is 18:39.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.