Thread: Current Control
View Single Post
  #9   Spotlight this post!  
Unread 18-06-2010, 19:43
kamocat's Avatar
kamocat kamocat is offline
Test Engineer
AKA: Marshal Horn
FRC #3213 (Thunder Tech)
Team Role: Mentor
 
Join Date: May 2008
Rookie Year: 2008
Location: Tacoma
Posts: 894
kamocat is just really nicekamocat is just really nicekamocat is just really nicekamocat is just really nicekamocat is just really nice
Send a message via AIM to kamocat Send a message via MSN to kamocat
Re: Current Control

Yes, I have firmware version 91.

I fiddled with the sliders, but didn't really get anywhere.
Your method of tuning is actually perfectly acceptable and common, and it's just an approximation of Ziegler-Nichols.

However, the oscillation point seems to change on me as I change the setpoint, and that's rather puzzling. (When I have the setpoint at 1A, every P value seems to either cause oscillation, or no output at all.)
__________________
-- Marshal Horn
Reply With Quote