Hi Kirk,
That is a nice overview of the setup. Can use that for the wiki or manuals?
Thanks
John
On 10/15/2011 12:30 AM, Kirk Wallace wrote:
On Fri, 2011-10-14 at 15:43 -0400, Dave wrote:
... snip
The limit3 function is a very useful function. I have it running 3
axis on one machine at
On 10/14/2011 10:30 PM, Kirk Wallace wrote:
Homing will need to be worked out, or I could rig up an absolute
encoder. I found that if I setp encoder.0.reset 1, the carousel starts
rotating until I get it set back to 0, and of course the home position
is then lost. I suppose the procedure is to
On Sat, 2011-10-15 at 06:37 -0700, Karl Cunningham wrote:
On 10/14/2011 10:30 PM, Kirk Wallace wrote:
Homing will need to be worked out, or I could rig up an absolute
encoder. I found that if I setp encoder.0.reset 1, the carousel starts
rotating until I get it set back to 0, and of course
I now have an encoder mounted to my tool carousel. I linked the encoder
to a PID and found that each pocket is 720 counts apart. I can travel in
either way to get to a pocket, but there is no motion control, so the
start and stop is pretty abrupt. I am starting to consider implementing
some sort
On 14 October 2011 16:15, Kirk Wallace kwall...@wallacecompany.com wrote:
As is, the straight PID works okay, but if I increase the
maximum carousel speed (very likely), the start/stop jerk may become a
problem. Any pointers on how to attack this problem would be
appreciated.
If you pass the
On Fri, Oct 14, 2011 at 08:15:52AM -0700, Kirk Wallace wrote:
As is, the straight PID works okay, but if I increase the
maximum carousel speed (very likely), the start/stop jerk may become a
problem. Any pointers on how to attack this problem would be
appreciated.
Consider using a limit3
Kirk Wallace wrote:
I now have an encoder mounted to my tool carousel. I linked the encoder
to a PID and found that each pocket is 720 counts apart. I can travel in
either way to get to a pocket, but there is no motion control, so the
start and stop is pretty abrupt. I am starting to consider
On Fri, Oct 14, 2011 at 10:50:54AM -0500, Jon Elson wrote:
You cold build a stupid trajectory planner as a hal component. It would
take a couple
parameters such as max speed and acceleration, and a pin for final
position.
This is what limit3 does.
On Fri, Oct 14, 2011 at 10:15 AM, Kirk Wallace
kwall...@wallacecompany.com wrote:
I now have an encoder mounted to my tool carousel. I linked the encoder
to a PID and found that each pocket is 720 counts apart. I can travel in
either way to get to a pocket, but there is no motion control, so
On Fri, 2011-10-14 at 10:58 -0500, Chris Radek wrote:
On Fri, Oct 14, 2011 at 10:50:54AM -0500, Jon Elson wrote:
You cold build a stupid trajectory planner as a hal component. It would
take a couple
parameters such as max speed and acceleration, and a pin for final
position.
On Fri, 2011-10-14 at 11:08 -0500, Thomas Powderly wrote:
... snip
dang its like an airpot!
limit3 examples in http://www.linuxcnc.org/docview/html/hal_hal-examples.html
hth tomp
Thanks for the link. I haven't seen that one yet.
--
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
On Fri, Oct 14, 2011 at 09:22:00AM -0700, Kirk Wallace wrote:
On Fri, 2011-10-14 at 10:58 -0500, Chris Radek wrote:
On Fri, Oct 14, 2011 at 10:50:54AM -0500, Jon Elson wrote:
You cold build a stupid trajectory planner as a hal component. It would
take a couple
parameters such as
On Fri, 2011-10-14 at 11:47 -0500, Chris Radek wrote:
... snip
No, on the contrary, it does exactly what you want.
... snip
Great, thanks. I'm on my way to the shop to try it out.
--
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/index.html
On 14 October 2011 16:15, Kirk Wallace kwall...@wallacecompany.com wrote:
the start/stop jerk may become a problem.
Actually, this is possibly a case where you do want jerk-limited (rate
of change of acceleration) limiting, and that would require the
as-yet-unwritten limit4 HAL function.
On Fri, 2011-10-14 at 18:22 +0100, andy pugh wrote:
On 14 October 2011 16:15, Kirk Wallace kwall...@wallacecompany.com wrote:
the start/stop jerk may become a problem.
Actually, this is possibly a case where you do want jerk-limited (rate
of change of acceleration) limiting, and that
On 10/14/2011 3:27 PM, Kirk Wallace wrote:
On Fri, 2011-10-14 at 18:22 +0100, andy pugh wrote:
On 14 October 2011 16:15, Kirk Wallacekwall...@wallacecompany.com wrote:
the start/stop jerk may become a problem.
Actually, this is possibly a case where you do want
Chris Radek wrote:
On Fri, Oct 14, 2011 at 10:50:54AM -0500, Jon Elson wrote:
You cold build a stupid trajectory planner as a hal component. It would
take a couple
parameters such as max speed and acceleration, and a pin for final
position.
This is what limit3 does.
Yes,
On Fri, 2011-10-14 at 15:43 -0400, Dave wrote:
... snip
The limit3 function is a very useful function. I have it running 3
axis on one machine at high speeds.
I got it to work.
http://www.wallacecompany.com/machine_shop/Shizuoka/Carousel_Overview-1a.png
limit3 doesn't really work the way I
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