On Sat, 3 Oct 2009, Eric H. Johnson wrote:
> Date: Sat, 3 Oct 2009 16:14:20 -0400
> From: Eric H. Johnson <ejohn...@camalytics.com>
> Reply-To: "Enhanced Machine Controller (EMC)"
> <emc-users@lists.sourceforge.net>
> To: "'Enhanced Machine Controller (EMC)'" <emc-users@lists.sourceforge.net>
> Subject: Re: [Emc-users] PWM tuning with hostmot2 and 7i33
>
> Peter,
>
>>> Heres what I would check:
>
> Can you get a HALScope plot of the step response? <<
>
> Yes, but not until Monday when I will be back at the shop.
>
>>> Do you have velocity or torque mode amplifiers?
>
> (Torque mode amplifiers will typically require a higher sample rate and are
> tougher to tune)
> your .6" error even with a P of 20 suggests torque mode to me. <<
>
> Velocity
So how can a .6" error which must be a large number of encoder counts not
generate even a small velocity to correct the error, something is really wrong
here...
Peter Wallace
Mesa Electronics
(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.
------------------------------------------------------------------------------
Come build with us! The BlackBerry® Developer Conference in SF, CA
is the only developer event you need to attend this year. Jumpstart your
developing skills, take BlackBerry mobile applications to market and stay
ahead of the curve. Join us from November 9-12, 2009. Register now!
http://p.sf.net/sfu/devconf
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
