That sounds right, it's a queue buster because of the spindle speed change, so it acts like exact stop. I'm still not sure why it's capping the speed at 237RPM. Your outputs make sense (~19 ipm at ~270RPM actual speed is about 0.07 in / rev). I'll poke around some more and see what I can find. Thanks again for putting it through its paces!
On Wed, Dec 14, 2016 at 8:58 PM sam sokolik <sa...@empirescreen.com> wrote: > oh - what - did you mention you get exact stop when it is trying to > change the spindle speed? Is that why it is happening on this system? > > sam > > On 12/14/2016 05:56 PM, sam sokolik wrote: > > Here is a plot with motion.spindle-speed-in > > > > > http://electronicsam.com/images/KandT/testing/robthreading/latest/robnewandspindlein.png > > > > sam > > > > > > > > On 12/11/2016 03:52 PM, Robert Ellenberg wrote: > >> Sam, one last thing, is it possible to put the spindle-speed-in pin on a > >> halscope channel? I'd like to see what the spindle velocity is when it > >> transitions out of accel sync. > >> > >> On Sun, Dec 11, 2016 at 4:44 PM Robert Ellenberg <rwe...@gmail.com> > wrote: > >> > >>> Thanks for giving it a spin! > >>> > >>> I am still getting the error about the spindle going too fast.. You > can > >>> see the threading is happening at 19.12 ipm and the axis max vel is > >>> 30ipm. I tried a similar config and got the same result (could be both > >>> configs have some odd issue we have not figured out.) > >>> > >>> > http://electronicsam.com/images/KandT/testing/robthreading/latest/newthreadingfix2Error.png > >>> > >>> > >>> There's definitely an edge case there I didn't account for. I'll keep > >>> working on it and see if I can isolate a test case to reproduce. > >>> > >>> Current 2.7 behavior with the blip at the beginning (again - didn't see > >>> this with your latest push) > >>> > >>> > http://electronicsam.com/images/KandT/testing/robthreading/latest/current2.png > >>> > >>> > >>> Another thing I'm noticing is that my modified position-error > calculation > >>> seems to perform worse with the stock-like velocity estimate (in terms > of > >>> steady-state error). I'll play with a few approaches and see if I can > get > >>> something better than stock. > >>> > >>> Sam, do you do any kind of filtering / averaging in your spindle-speed > >>> input? It would be interesting to see the effect if so. I suspect > that the > >>> velocity signal could be filtered significantly without impacting the > >>> position tracking performance. > >>> > >>> Best, > >>> Rob > >>> > >> > ------------------------------------------------------------------------------ > >> Developer Access Program for Intel Xeon Phi Processors > >> Access to Intel Xeon Phi processor-based developer platforms. > >> With one year of Intel Parallel Studio XE. > >> Training and support from Colfax. > >> Order your platform today.http://sdm.link/xeonphi > >> _______________________________________________ > >> Emc-developers mailing list > >> Emc-developers@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/emc-developers > >> > > > > > ------------------------------------------------------------------------------ > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-developers mailing list > > Emc-developers@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
