On Mon, 17 Oct 2011, andy pugh wrote:
Date: Mon, 17 Oct 2011 22:16:50 +0100
From: andy pugh <bodge...@gmail.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] config without encoders
On 17 October 2011 22:08, Tom Easterday <tom-...@bgp.nu> wrote:
I can't get anything that has lower following error than having everything set
to 0 and FF1=1.
If anything is going to work I would expect it to be FF1=1, P=0, I =
very small.
Yes except FF1 will be close to 1 but not exactly, and needs to be dialed in
first (to compensate for the difference between EMCs clock and the 7I43s
clock)
I think P is called for instead if I as P will be a first order correction to
position (via velocity) and hence stable (exponential)
A small amount of P (or I) is needed to compensate for accumulating timebase
errors and direction change delays
--
atp
"Torque wrenches are for the obedience of fools and the guidance of wise men"
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All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2d-oct
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