I just looked at the PocketBeagle and it seems to be a good choice for
servo or stepper.
It will have to be headless so I would imagine that I will be using
ladder to control the system with.
The track length is 6m, a button is pressed and I accelerate to 8m/s and
stop at the other end waiting for a command to do the same in the
opposite direction. Machine must home in the one axis on demand as well.
Would the ladder logic route be good enough or are there some other
suggestions?
------ Original Message ------
From: "Alexander Rössler" <alexander@roessler.systems>
To: "Enhanced Machine Controller (EMC)"
<emc-users@lists.sourceforge.net>
Cc: "Marius Liebenberg" <mar...@mastercut.co.za>
Sent: 2018-04-04 09:24:43
Subject: Re: [Emc-users] One servo system
Machinekit + PocketBeagle is good combo if you are looking for
something
running Linux.
Chris Albertson writes:
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
<mar...@mastercut.co.za> 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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Alexander Rössler
HMI Expert at Rössler Systems
Tel: +43 680 1348338
Web: https://roessler.systems
Blog: https://machinekoder.com
alexander@roessler.systems
Lebnergasse 1/7/7
1210 Wien - Austria
ATU72251528
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