You are not registered yet. Please click here to register!


 
 
plc storereviewsdownloads
This board is for PLC Related Q&A ONLY. Please DON'T use it for advertising, etc.
 
Try our online PLC Simulator- FREE.  Click here now to try it.

New Here? Please read this important info!!!


Go Back   PLCS.net - Interactive Q & A > PLCS.net - Interactive Q & A > LIVE PLC Questions And Answers

Reply
 
Thread Tools Display Modes
Old February 8th, 2023, 10:10 PM   #46
Peter Nachtwey
Member
St Kitts and Nevis

Peter Nachtwey is offline
 
Peter Nachtwey's Avatar
 
Join Date: Apr 2002
Location: No income tax, no capital gains tax. Freedom!
Posts: 8,274
Yes, I was sloppy.
OK we agree. 0.2085 cnts/250 microseconds.
The problem is that most of the time the controller doesn't think it is moving and when it does, there is a huge output spike due the derivative gain. Most of the control output seems to come from the feed forwards.

The time between counts gets worse when the motion is slower.
__________________
"Living is easy with eyes closed, misunderstanding all you see...." Strawberry Fields Forever, John Lennon

Last edited by Peter Nachtwey; February 8th, 2023 at 10:39 PM.
  Reply With Quote
Reply
Jump to Live PLC Question and Answer Forum


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:07 PM.


.