As someone who uses functions like g8p1, g5.1q1 and g5p10000 on mits/fanuc and cycle832 on Siemens, I can say that the need for high speed data processing functionality is pretty great. Although I don't know how Linuxcnc processes g code data, I do know that the aforementioned functions will buffer hundreds of lines of code and smooth the transitions between points to a certain degree of accuracy, much like calculating down to a nurb or spline instead of worrying about acc/dec on a point to point basis. Much like how lcnc has g64 with selectable accuracy, these functions offer selectable acc/dec settings that will either rattle your fillings or smooth out sharp corners to be razor perfect. I've not tried to run any of my lcnc machines at speeds that would make me see an eminent need for this functionality, but I'm sure it would be a welcomed addition.
Phil T. The Feral Engineer Check out my LinuxCNC tutorials, machine builds and other antics at www.youtube.com/c/theferalengineer Help support my channel efforts and coffee addiction: www.patreon.com/theferalengineer On Mon, Aug 23, 2021, 10:17 AM Todd Zuercher <to...@pgrahamdunn.com> wrote: > To my lay persons eyes I would think it would be enough to jerk limit in > joint space. The limiting in Cartesian space would then take care of > itself. > > As to the jogging question, does it matter? Why would jogging have to > have the same acceleration limits as planned motion? Set the jogging > limits to something safe and conservative that won't matter if they are > jerk limited. > > Todd Zuercher > P. Graham Dunn Inc. > 630 Henry Street > Dalton, Ohio 44618 > Phone: (330)828-2105ext. 2031 > > -----Original Message----- > From: andy pugh <bodge...@gmail.com> > Sent: Monday, August 23, 2021 4:50 AM > To: Enhanced Machine Controller (EMC) <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] jerk control > > [EXTERNAL EMAIL] Be sure links are safe. > > On Mon, 23 Aug 2021 at 04:40, Chris Albertson <albertson.ch...@gmail.com> > wrote: > > > Actually for a machine tool, why not run the simulation off-line and > > use as much time and computer power as it takes. > > Feed-override? > > Do you allow infinite jerk on abort? You might think that is an easy > question, except that continuous jog is implemented as a move to the limit > that is aborted on key release. > > And, do we need to jerk-limit in joint space or cartesian space, or both? > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is designed > for the especial use of mechanical geniuses, daredevils and lunatics." > - George Fitch, Atlanta Constitution Newspaper, 1912 > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Ctoddz%40pgrahamdunn.com%7Caaabdbd2b59a4e0ad88708d966134695%7C5758544c573f47cebee96c3e0806fb43%7C0%7C0%7C637653055682515186%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=iD2Nxd21YC5aKx8hByW2ScEBuMjM9%2FXJCwo05FHb%2BLU%3D&reserved=0 > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
