>>> option 3) differentiate the output from above with ddt and feed it to
>>> the needle "spindle" as a velocity command. might be slightly less
>>> accurate than 2 but you won't need to do silly hacks to prevent
>>> counter overflow.
>
> 3A) differentiate the X and Y positions _before_ the hypo
Dave Engvall wrote:
> Hi Ben,
>
> Thanks for the ideas, option 3 makes the most sense to me and I guess
> the best approach is to rig up a couple of servo motors and start
> experimenting.
>
>> option 3) differentiate the output from above with ddt and feed it
>> to the
>> needle "spindle"
Hi Ben,
Thanks for the ideas, option 3 makes the most sense to me and I guess
the best approach is to rig up a couple of servo motors and start
experimenting.
Dave
On Aug 24, 2007, at 3:38 AM, ben lipkowitz wrote:
> Dave Engvall wrote:
>
>> Think long arm sewing machine for quilting. The rot
Dave Engvall wrote:
> Think long arm sewing machine for quilting. The rotational axes are the
> needle and the bobbin. The tracking give constant stitch length.
> Two are X and Y and the other pair need to track (rotationally) with in
> a few degrees or better. Rotational speeds are from zero
Hi all,
I have an application that needs (eventually) 4 axes.
Two are X and Y and the other pair need to track (rotationally) with
in a few degrees or better.
Rotational speeds are from zero to 1800 rpm for one axis and either
1:1 or 2:1 for the other.
The speed of rotation and the vectorized
