2011/5/14 dave <[email protected]> > > On Fri, 2011-05-13 at 22:55 -0400, Kyle Kerr wrote: > > On Fri, May 13, 2011 at 8:15 PM, andy pugh > > >>> It's mm, not inches, I expect. > > >>> > > >> 39 inches/min is nothing to sneeze at. > > > > > > 10000mm/min is 390 in/min. > > > > > > Even less to sneeze at. > > DOH! damn decimal :P > > > > Orders of magnitude only count on paychecks. ;-) >
My apologies, those really are meant to be 10000 mm/min. Nothing extraordinary, but looks really good (I promise to share some video soon)! And it seems to me that I am getting close max theoretical speed - all the high ratios and having fixed 10-microstep resolution in drives (unfortunately I discovered it only after purchase, damn, RFM before paying!!!) is getting me close to max theoretical stepping rate - drive needs step length 3us and step space 0,5 us. I have set it to 4us. And actually it does not really make sense increasing max velocity without increasing acceleration - travel along Y is 400 mm, along Z - also 400 mm. With lower acceleration values it can be easily heard that it is still accelerating, when it already starts slowing down. But setting higher accelerations makes me fear about lost steps. I do not exactly know, how to detect them without encoders or running some complicated (and long) file for a long time and then comparing, if it always stops in the same spot. Viesturs ------------------------------------------------------------------------------ Achieve unprecedented app performance and reliability What every C/C++ and Fortran developer should know. Learn how Intel has extended the reach of its next-generation tools to help boost performance applications - inlcuding clusters. http://p.sf.net/sfu/intel-dev2devmay _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
