On Thu, 1 Nov 2012, Stuart Stevenson wrote:
> Date: Thu, 1 Nov 2012 12:25:31 -0500
> From: Stuart Stevenson <[email protected]>
> Reply-To: EMC developers <[email protected]>
> To: [email protected]
> Subject: Re: [Emc-developers] ferror calculation incorrect in motion
>
> Gentlemen,
> What is ferror used for in motion or any calculation? I thought it was
> only for human feedback during the tuning phase.
>
> PID error and ferror are not two different things?
>
> Just my two cents.
>
> If ferror can be calculated in advance I would love to see automatic tuning
> so I don't need to tune the servos and I will still have no following error.
>
> just my dos centavos
>
> Stuart
Yes ferror is used:
1. For tuning (badly since 0 ferror is not 0 pid error when in motion)
2. for servo fault detection (too large a ferror causes a fault)
Peter Wallace
Mesa Electronics
(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.
------------------------------------------------------------------------------
Everyone hates slow websites. So do we.
Make your web apps faster with AppDynamics
Download AppDynamics Lite for free today:
http://p.sf.net/sfu/appdyn_sfd2d_oct
_______________________________________________
Emc-developers mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/emc-developers
