On Thursday, January 6, 2022 2:35:25 PM EST Peter C. Wallace wrote:
> On Thu, 6 Jan 2022, gene heskett wrote:
> > Perhaps, Peter or Chris, a post describing what that filter CAN do is in
> > order. I've looked at its man page but if there was a useful function
> > there I didn't trigger on it.
> >
On Thu, 6 Jan 2022, gene heskett wrote:
Perhaps, Peter or Chris, a post describing what that filter CAN do is in
order. I've looked at its man page but if there was a useful function there
I didn't trigger on it.
And here, the web links are inactive plus it doesn't copy/paste.
Is that
; >
> > To: "Enhanced Machine Controller (EMC)"
> >
> > Subject: Re: [Emc-users] Very good software backlash control demo.
> >
> > this robot that loads pencil leads it really just a software testing
> > device. A research tool. What is new h
On Wed, 5 Jan 2022, Chris Albertson wrote:
Date: Wed, 5 Jan 2022 19:38:46 -0800
From: Chris Albertson
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] Very good software backlash control demo.
this rob
this robot that loads pencil leads it really just a software testing
device. A research tool. What is new here s not the idea too use two
sensors but
1) use a predictive model that says how the system will flex in the future
in s given acceleration is apllied.
2) collect data while the
Hi,
I ran across an article by one of the servo drive firms that said the
using two sensors/axis improved motion. I think they used a resolver on
the drive and an encoder on the ball screw. While this improves motion
that assumes you have very good ball screws. I think that a better
approach
On Monday, January 3, 2022 11:45:13 PM EST Sam Sokolik wrote:
> I think it is just easy to have 2 pid's and sum them.. (one on the motor
> encoder with P,D and feed forward - the other with scales and the I term)
> Then you are not re-writing the pid component for some odd corner case.
>
> sam
uble nut ACME.
> >
> > Now for a robot arm that does pick and place of work "on to"/"off of" the
> > mill or a conveyor belt maybe it's not an issue?
> > John
> >
> >
> >
> > > -Original Message-----
> > > From
ling cutter
> > > > pulling or pushing the table under heavy cuts.
> > > >
> > > > The only real solution is ball screws or double nut ACME.
> > > >
> > > > Now for a robot arm that does pick and place of work "on to"/&q
rk "on to"/"off of"
> > > the
> > > mill or a conveyor belt maybe it's not an issue?
> > > John
> > >
> > > > -Original Message-
> > > > From: Chris Albertson [mailto:albertson.ch..
On Monday, January 3, 2022 11:00:54 PM EST Sam Sokolik wrote:
> I think this just would work with linuxcnc and scales + motor encoders.
> WIth the scales using only I in the 2 pid loops - it would be constantly
> correcting backlash to keep the position.. (that is what the G did)
>
> sam
This
> Now for a robot arm that does pick and place of work "on to"/"off of" the
> > mill or a conveyor belt maybe it's not an issue?
> > John
> >
> >
> >
> > > -Original Message-----
> > > From: Chris Albertson [mailto:albe
or a conveyor belt maybe it's not an issue?
> John
>
>
>
> > -Original Message-
> > From: Chris Albertson [mailto:albertson.ch...@gmail.com]
> > Sent: January-03-22 6:40 PM
> > To: Enhanced Machine Controller (EMC)
> > Subject: [Emc-users] Very good softwar
> From: Chris Albertson [mailto:albertson.ch...@gmail.com]
> Sent: January-03-22 6:40 PM
> To: Enhanced Machine Controller (EMC)
> Subject: [Emc-users] Very good software backlash control demo.
>
> CNC is about precision motion control. Here is a new idea where this
> builder gets 0.
This has been done at a bigger scale... (2 feedback loops)
https://web.archive.org/web/20160222165548/http://jmkasunich.com/cgi-bin/blosxom/shoptask/wichita-trip-02-20-08.html
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Combining_Two_Feedback_Devices_On_One_Axis
On Mon, Jan 3, 2022, 8:42 PM Chris
CNC is about precision motion control. Here is a new idea where this
builder gets 0.05mm accuracy but uses hobby level R/C servo Not only that,
but he connects three of these in series, one to the next to the next so
all the backlashes and poor tolerances add together. Then he uses this to
do
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