ogether?
For the most part, I followed the instructions at
http://neo-technical.wikispaces.com/emc2-arch
<http://neo-technical.wikispaces.com/emc2-arch>
I think they're basically correct, though they did contain some errors and
omissions.
Neil Baylis
---
Anyone can see what symbols a module depends on. The module exports a symbol
table that insmod can read (before it loads the module) to make sure it's
safe to install the module. If there are symbols required by the module
you're installing that are not exported by any other module, insmod will
com
I think the unknown symbol message happens at link time (i.e., before
control is transferred to the loaded module.)
If there's an unknown symbol, it won't load, obviously.
I think depmod can give you a map of what modules depend on what symbols.
Neil
On Tue, Aug 31, 2010 at 10:09 AM, Jon Elson
Andy,
during the orientation, I'm assuming the device operates in trapezoidal
mode. Is that correct?
If so, would it be possible to combine the orientation with homing, since
homing is a time when the user expects the machine to move anyway.
Presumably, to do the phase orientation, you must move
If changing/removing some unrelated line of code fixes a problem, then I
usually suspect one of two things: a) It's a race condition, and you changed
the timing, or b) You changed the memory layout, and corruption (e.g. due to
wild pointer) that was occurring at a vital location is now occurring at
On Wed, Jun 16, 2010 at 4:32 PM, Andy Pugh wrote:
> Though I have rather forgotten why I started this, I think it was the
> three servos I got off eBay for a bargain price.
>
>
All my best ideas seem to start out that way. Now I have two nice Moog BLDC
motors I bought on eBay, and am thinking of a
x27;t know much
about SoftDMC. Does SoftDMC even do sinusoidal?)
Neil
On Wed, Jun 16, 2010 at 2:18 PM, Andy Pugh wrote:
> On 10 June 2010 00:05, Neil Baylis wrote:
> > Can you describe how it runs your motor compared to Trapezoidal
> commutation?
>
> Here is the comparison, yo
cogging? If so, then it's not ironless, and would be more difficult to
control smoothly, especially at low speeds.
Neil
On Wed, Jun 9, 2010 at 4:38 PM, Andy Pugh wrote:
> On 10 June 2010 00:05, Neil Baylis wrote:
> > Can you describe how it runs your motor compared to Trapezoidal
Can you describe how it runs your motor compared to Trapezoidal commutation?
Is your motor Ironless?
Neil
On Wed, Jun 9, 2010 at 3:43 PM, Andy Pugh wrote:
> Attached is a sinusoidally commutating bldc driver for the hostmot2
> 3pwmgen.
>
> I have it running a NEMA23 servo with a 7i43 and a 7i39
On Tue, May 18, 2010 at 10:30 AM, Jon Elson wrote:
>
>
> To make it a linear program, I would have had to run the slot generator
> program 24 times and type in the coordinates each time, then combine the
> output of these 24 program runs into one file, editing out the M02's.
> Manually typing in
r be able to reach very high
speeds, and so the control loop will have relatively many
opportunities to act, compared to a machine with a BLDC driving a
leadscrew.
If this works, it would make it possible to use a less expensive
6-step drive on some machines where a sinusoidal drive might o
trol loop will have relatively many
opportunities to act, compared to a machine with a BLDC driving a
leadscrew.
If this works, it would make it possible to use a less expensive
6-step drive on some machines where a sinusoidal drive might o
Well, if one uses OSC as the protocol, there's nothing to develop for
the iPhone, because there's already a great UI app that uses it. It
would only be necessary to develop the EMC part.
If there's not already an OSC application for the Nokia, it shouldn't
be too hard to make one.
Here's a link t
OSC iPhone application which is currently
used to control music synthesizers in real time. There are other
similar iPhone apps, but this is the one I have experience with. There
are existing OSC libraries that are well tested and stable.
Any comments, pointers, or suggestions would be welcome.
Thanks,
N
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