Hi, take a look at this commit and generally at this branch: https://github.com/araisrobo/linuxcnc/commit/bc839716b2cc6cb905cab55f6fe98be87fdd74b8
Michael W dniu 16.12.2013 17:47, Charles Steinkuehler pisze: > Hmm...I dug into this a bit, and it turns out the Arduino Marlin > firmware doesn't really support true jerk limiting. What they call jerk > is actually the maximum instantaneous allowable change in combined XY > velocity (ie: going around corners). I'm pretty sure the "jerk" setting > in Marlin can be approximated (likely with better overall results) using > G64 with a tolerance. > > Descriptions of Arduino/Marlin "jerk" limiting: > > http://forums.reprap.org/read.php?146,190628,191971#msg-191971 > > https://github.com/ErikZalm/Marlin/issues/305#issuecomment-10318472 > > Expand the comments too, where it is mentioned: "Evdz and me had > discussions, because we both know jerk is a terrible name for this, > because jerk is the change rate of acceleration. It should be renamed to > turn-velocity or similar. But the name is to well known to change." > > Off to experiment... > > On 12/16/2013 9:50 AM, Viesturs Lācis wrote: >> Araisrobo have implemented jerk limitation. I will forward you an email >> from Yishin, there are some links to their source code. That email is more >> than 2,5 years old :) >> >> Viesturs >> >> >> 2013/12/16 Charles Steinkuehler <char...@steinkuehler.net> >> >>> I'm wanting to limit jerk on my 3D printer and see if it helps with >>> print quality, but I don't see any way to do that. >>> >>> Digging through the documentation and list archives, it looks like the >>> stock motion module doesn't support any sort of limit on jerk. Is that >>> really correct? >>> >>> If so, does the new trajectory planner with arc blending have jerk >>> limiting too? I may be switching to that sooner than I expected. :) >>> >>> -- >>> Charles Steinkuehler >>> char...@steinkuehler.net >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> Rapidly troubleshoot problems before they affect your business. Most IT >>> organizations don't have a clear picture of how application performance >>> affects their revenue. With AppDynamics, you get 100% visibility into your >>> Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics >>> Pro! >>> http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >>> > > > > ------------------------------------------------------------------------------ > Rapidly troubleshoot problems before they affect your business. Most IT > organizations don't have a clear picture of how application performance > affects their revenue. With AppDynamics, you get 100% visibility into your > Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! > http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
