Re: [Emc-users] One servo system

[Nicklas Karlsson]

On Wed, 28 Mar 2018 09:42:01 -0700
Chris Albertson  wrote:

> Of course.   Write a PID based control loop and put it an something
> like an Arduino.  I've done this a few times the control the wheels of
> a mobile robot.

Then you need quite a lot of accelertion, if it's heavy you also have to make 
sure floor is properly fastened to the earth or allow the floor to move.

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Re: [Emc-users] Help

[Todd Zuercher]

Chuck, 

Thank you very much for your work on that part I needed.  It was exactly what I 
had asked for, and would have worked perfectly if I had only measured the outer 
hole circle correctly.  I was able to make it work with some minor 
modifications though.
Again, thank you for your help.

Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street 
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031

-Original Message-
From: ch...@koenigcnc.com [mailto:ch...@koenigcnc.com] 
Sent: Thursday, March 15, 2018 2:03 PM
To: Todd Zuercher 
Subject: RE: [Emc-users] Help

I can do it later today.  I am in Washington  State, Fed Ex is the quickest
and Pay Pal would be fine.If you have a fed ex account just set up a
pick up. Or I can use my account.  

Also can you send as a DXF   I am having trouble opening the file as a DWG,
Mastercam does not like it for some reason.  

Thanks

Chuck

KoenigCNC
3311 T Ave
Anacortes, WA 98221
3609691420

-Original Message-
From: Todd Zuercher 
Sent: Thursday, March 15, 2018 9:44 AM
To: ch...@koenigcnc.com
Cc: Franklin Geiser 
Subject: RE: [Emc-users] Help

Hello Chuck,

Well, you have been the first response I've gotten, and that price would be 
acceptable for us, and since I'm in a little bit of a hurry.

How soon could you have it done?  Where would it be sent from?  How would you 
like to arrange payment?

Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031

-Original Message-
From: ch...@koenigcnc.com [mailto:ch...@koenigcnc.com]
Sent: Thursday, March 15, 2018 11:56 AM
To: 'Enhanced Machine Controller (EMC)' 
Subject: Re: [Emc-users] Help

Hi Todd

If you can't find anyone to do it let me know.  I can cut one for you for
100.00   I have several mills and I have some shop students that I mentor on
Saturdays that I could turn loose on this project

Let me know

Chuck Todd
360-969-1420

-Original Message-
From: Todd Zuercher 
Sent: Thursday, March 15, 2018 8:45 AM
To: Linuxcnc-Users 
Subject: [Emc-users] Help

I need a part milled reasonably quickly.  Unfortunately we are a wood working 
shop and we just don't have any metal working machines.  (not completely true 
we recently bought an old manual Bridgeport, but I have not had a chance to cnc 
it yet.)

I'm in Ohio, and the part I need is a mild steel adapter ring for the nose of a 
spindle.  It is 6.5 inches (165mm) diameter, and 10mm thick, center hole is 
96mm, and has two hole circles of 8 holes each.  The outer circle is on a 
155.5mm circle and is tapped for 6mm screws, the inner circle is offset to the 
outer one on a 115mm circle and is drilled and counter sunk for 6mm flat head 
screws.

Seems like it would be a simple job for someone with a cnc mill set up for 
working with steel.

If you have any interest in this little one off job, please email me a quote.

Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031


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Re: [Emc-users] One servo system

[Chris Albertson]

Of course.   Write a PID based control loop and put it an something
like an Arduino.  I've done this a few times the control the wheels of
a mobile robot.

The details depend on the interfaces to botkhthe motoring the higher
level control


As for higher level control...  Is it a human using a joystick or some
kind of automation that does the same thing repetivity  or must the
device interact with the environment some how.  Perhaps opening a for
as a person approaches.

Then I have to ask what kind of hardware driver you have.   Some
drivers do most of the work for you.  These might take a
step/direction pulse, r have an analog input.  But other drivers are
just an H-Bridge and raw encoder signals.This is the kind of
serves I use.   I end u using a small micro controler (Arduino or
ARM-M) and relaying on a PID library.

In ant case most of your effort will be spent in the interfaces not
the actual PID control loop as that is just a few calls to a PID
library

On Wed, Mar 28, 2018 at 8:15 AM, Marius Liebenberg
 wrote:
> Hi all
> I have to put together a system that will use one servo to drive a small
> platform over a distance of 6m at a speed of about 25km/h or 8m/s or there
> about.
>
> I feel that using a full computer and mesa card for just one axis that does
> not need a display sounds a bit excessive. The question is what are the
> other options if any.
>
>
>
> -
> Regards / Groete
>
> Marius D. Liebenberg
> +27 82 698 3251
> +27 12 743 6064
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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-- 

Chris Albertson
Redondo Beach, California

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Re: [Emc-users] One servo system

[andy pugh]

On 28 March 2018 at 16:15, Marius Liebenberg  wrote:

> I feel that using a full computer and mesa card for just one axis that does
> not need a display sounds a bit excessive. The question is what are the
> other options if any.

There are servo motors with integrated drives that can do this. That
is probably the minimal solution.
http://www.motioncontrolproducts.com/motors/axor-fast-back-brushless-motor-with-drive.php?cat=4
Might do it (They may only work from CAN bus, but that seems a bit limiting)


-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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Re: [Emc-users] One servo system

[Peter C. Wallace]

rOn Wed, 28 Mar 2018, Marius Liebenberg wrote:


Date: Wed, 28 Mar 2018 15:15:05 +
From: Marius Liebenberg 
To: "Enhanced Machine Controller (EMC)" 
Subject: [Emc-users] One servo system

Hi all
I have to put together a system that will use one servo to drive a small 
platform over a distance of 6m at a speed of about 25km/h or 8m/s or there 
about.


I feel that using a full computer and mesa card for just one axis that does 
not need a display sounds a bit excessive. The question is what are the other 
options if any.




-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064
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If its just one axis can't you do this entirely with a servo drive capable of 
position mode moves?


Peter Wallace
Mesa Electronics


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Re: [Emc-users] One servo system

[Cristian Bontas]

Hello
An Arduino would work I think, if the driver takes step/dir inputs then
motion is simply a pulse loop. Speed control or travel ends can be added
easily too.

On Wed, Mar 28, 2018, 18:46 Marius Liebenberg 
wrote:

> Hi all
> I have to put together a system that will use one servo to drive a small
> platform over a distance of 6m at a speed of about 25km/h or 8m/s or
> there about.
>
> I feel that using a full computer and mesa card for just one axis that
> does not need a display sounds a bit excessive. The question is what are
> the other options if any.
>
>
>
> -
> Regards / Groete
>
> Marius D. Liebenberg
> +27 82 698 3251
> +27 12 743 6064
>
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
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> https://lists.sourceforge.net/lists/listinfo/emc-users
>
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Re: [Emc-users] One servo system

[Dave Cole]

Many Digital servo drives can be configured for simple motion moves via 
their internal logic. Automation Direct and Teco servo drives can do 
that.   You can trigger the motion with digital I/O.   The motion is 
basic but that may be all you need.


Dave

On 3/28/2018 11:15 AM, Marius Liebenberg wrote:

Hi all
I have to put together a system that will use one servo to drive a 
small platform over a distance of 6m at a speed of about 25km/h or 
8m/s or there about.


I feel that using a full computer and mesa card for just one axis that 
does not need a display sounds a bit excessive. The question is what 
are the other options if any.




-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064
-- 


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[Emc-users] One servo system

[Marius Liebenberg]

Hi all
I have to put together a system that will use one servo to drive a small 
platform over a distance of 6m at a speed of about 25km/h or 8m/s or 
there about.


I feel that using a full computer and mesa card for just one axis that 
does not need a display sounds a bit excessive. The question is what are 
the other options if any.




-
Regards / Groete

Marius D. Liebenberg
+27 82 698 3251
+27 12 743 6064
--
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