On May 6 2013 10:50 PM, Michael Haberler wrote:
Kent, Ebo,
Am 07.05.2013 um 02:59 schrieb Kent A. Reed
kentallanr...@gmail.com:
On 5/6/2013 5:00 PM, EBo wrote:
does anyone remember the paper that was posted to the group that
measured the loss in torque as a function of speed and jitter?
Am 07.05.2013 um 10:26 schrieb EBo e...@sandien.com:
I think it would be a very useful study topic (and a paper worth
publishing) to start with this work, and go a step further
a sketch for the work based on the above I would find interesting in
general and very relevant to the
On May 7 2013 2:55 AM, Michael Haberler wrote:
Am 07.05.2013 um 10:26 schrieb EBo e...@sandien.com:
I think it would be a very useful study topic (and a paper worth
publishing) to start with this work, and go a step further
a sketch for the work based on the above I would find interesting
Am 07.05.2013 um 11:05 schrieb EBo e...@sandien.com:
speaking strictly for myself... writing such a paper would take me
more time than running such an experiment and would not help me in the
least. I do not mind helping solve the conundrum though. Do you have
access to suitable
On 7 May 2013 01:59, Kent A. Reed kentallanr...@gmail.com wrote:
Nevermind the SPIE paywall. NIST provides a pdf copy at
http://www.nist.gov/customcf/get_pdf.cfm?pub_id=824455
This models a linear dependency of delta-torque to delta-time, which
seems like it should break down at some point.
I
On 6 May 2013 21:44, Christophe Grellier c...@grellier.fr wrote:
- What is a stepper motor or a servo ? In french, a moteur can be a
stepper motor, a handrill motor, or even a car engine. Those are quite
different things.
One approach to answering such questions that I find works well is to
hmm do I have to bring forward the repair to my HP 3562A dynamic
system analyser?
it has a couple of channels and a driving noise source
Dave
--
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On 5/7/2013 5:53 AM, andy pugh wrote:
This models a linear dependency of delta-torque to delta-time, which
seems like it should break down at some point.
Absolutely, just as the small-angle analysis of a pendulum begins to
break down as the angle increases beyond 30deg-45deg, say. Fred and Will
Christophe,
It's hard to be everything to everyone - regarding howtos and LinuxCNC.
Don't overlook websites like CNCZone.com. They can often times offer
specifics for your particular CNC application
Knee Mill vs Plasma Cutter vs ? etc.
Also, questions such as this are probably better on the
I have a preliminary WJ200 modbus inverter driver that I've written, based
upon other modbus drivers I have seen from the VFD wiki page.
The source code so far is posted at https://github.com/OKComputers/wj200vfd
How do I report an error from user_mainloop? If the driver crashes, or
errors out,
Am 07.05.2013 um 16:43 schrieb Curtis Dutton curtd...@gmail.com:
I have a preliminary WJ200 modbus inverter driver that I've written, based
upon other modbus drivers I have seen from the VFD wiki page.
The source code so far is posted at https://github.com/OKComputers/wj200vfd
How do I
Christophe Grellier wrote:
Clear explanation. Thank you, Jon.
I will try to make a page on the wiki, with your answers, if you're OK.
Oh, cool! I'd like to proof that and maybe improve the explanation, too,
when the page is there. Thanks for doing the work.
Jon
Dave Caroline wrote:
hmm do I have to bring forward the repair to my HP 3562A dynamic
system analyser?
it has a couple of channels and a driving noise source
Actually, I think you could do it with LinuxCNC. Just rig a hardware step
generator in velocity mode to a constructed HAL signal
On 5/7/2013 12:23 PM, Jon Elson wrote:
I have a VAGUE recollection that Mariss Freimanis may have written
about this in his whitepapers about stepper performance. It might be
worth a quick search on his website at Geckodrives. He has certainly
done a LOT of testing of steppers.
Jon, that's
There's a mostly functionally complete bb_gpio driver in the bb-hal-gpio branch:
http://git.mah.priv.at/gitweb?p=emc2-dev.git;a=shortlog;h=refs/heads/bb-hal-gpio
It doesn't solve all pin-conflict issues yet, but the good news is it seems to
fail in pinmuxing if a pin isn't available. The crash
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Awesome! I'm looking forward to playing with this!
...now where did I put all that free time?!? :)
On 5/7/2013 2:52 PM, Ian McMahon wrote:
There's a mostly functionally complete bb_gpio driver in the
bb-hal-gpio branch:
I'd like to spend a little bit of time messing with your PRU code... got any
tips on the best way to get started with it?
On May 7, 2013, at 5:04 PM, Charles Steinkuehler char...@steinkuehler.net
wrote:
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Awesome! I'm looking forward to playing
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