First of all, thanks for spreading the word! I think you did not a great job explaining what these changes are, and what people should expect.
As for adding other axes, I'm working on the math for that, though it won't be a quick fix because it needs a bunch of new data structures and support functions. It seems like a 'ZZ' config would be a better solution in the near term for his machine. On Jan 8, 2014 3:56 PM, "sam sokolik" <sa...@empirescreen.com> wrote: > Todd on the forum brought up > > > http://www.linuxcnc.org/index.php/english/forum/10-advanced-configuration/27368-new-trajectory-planner-testersprograms-wanted > > I think you guys working on this are defonately on the right track. It > can offer a significant improvement depending on the code used. > I wish that it would be possible to easily extend this to other axis > beyond XYZ. > Several of the routers we use have double vertical axis with 2 spindles > using Z and W. The new traj planner shaved a min off running the code > included (went from 4.5 to 3.5) That was nearly a 25% improvement. > > Using the G64P0.005 vs G64P0.005Q0.005 difference was less significant > on the new planner run times were, 3:37 vs. 3:30. > > PS The same carving with the W code (W is identical to Z) takes about 6 > minuts using either planner. > > Maybe I need to try harder to build a ZZ configuration that will work > for us. > > Thanks again I will be playing with this some more. > > > > On 1/7/2014 9:16 PM, sam sokolik wrote: > > I posted on cnczone and linuxcnc for testing.. Hopefully some of the > > more adventurous users will give it a try > > > > > http://www.cnczone.com/forums/linuxcnc_formerly_emc2/206712-new_trajectory_planner_-_testers_programs_wanted.html > > > > > http://www.cnczone.com/forums/linuxcnc_formerly_emc2/206712-new_trajectory_planner_-_testers_programs_wanted.html > > > > If there is anything I should add - let me know. I may have been a bit > > vague on purpose. > > > > sam > > > > > > On 01/07/2014 11:52 AM, Robert Ellenberg wrote: > >> I'm thinking about changing how that constant works. Right now, it > >> represents how much of the segment has to be "consumed" by a blend arc > >> before we enable smoothing. If it's set at 0.50, this means smooth any > >> lines that are shortened by more than 50%. Smoothing in this case means > >> limiting the velocity to not exceed the initial or final velocity, to > >> remove the rapid acceleration and deceleration. > >> > >> As a debugging constant, it worked fine, but as an INI setting, it does > >> seem hard to use. If we're lucky, there may be an algorithmic way to do > >> this. Maybe if a segment isn't long enough to reach a "cruise" phase at > the > >> requested velocity, or if the velocity "bump" is less than some amount. > >> > >> > >> On Tue, Jan 7, 2014 at 11:45 AM, sam sokolik <sa...@empirescreen.com> > wrote: > >> > >>> I have a question about > >>> > >>> Controls how aggressive velocity smoothing is. It's a bit > counterintuitive, > >>> a value of 0.5 means no smoothing, a value of 0.0 means every segment > is > >>> "smoothed". Decrease this value if the velocity profile seems to be too > >>> "bumpy". > >>> > >>> ARC_BLEND_SMOOTHING_THRESHOLD = 0.4 > >>> > >>> I see in the email you had the threshold set to .75? (I am confused..) > >>> > >>> sam > >>> > >>> > >>> On 1/7/2014 2:19 AM, Robert Ellenberg wrote: > >>>> Ok, good news on the testing front, I think I've finally eliminated > the > >>>> little acceleration overages by making TP_TIME_EPSILON smaller, from > >>> 10^-7 > >>>> to 10^-10 or so. Properly initializing the ABC and UVW parts of the > blend > >>>> arc seem to have eliminated the graphical glitches as well. > >>>> > >>>> With these last issues being fixed, I've moved development over to the > >>>> "beta" branch here: > >>>> > >>>> > >>> > https://github.com/robEllenberg/linuxcnc-mirror/tree/circular-blend-arc-beta > >>>> The "beta" status means that it's been tested on multiple builds and > >>> shows > >>>> no apparent constraint violations or crashes. My top priority for the > >>> near > >>>> future will be squashing any bugs on this branch, though if there's > time > >>> I > >>>> might add some additional features. > >>>> > >>>> > >>>> On Tue, Jan 7, 2014 at 2:03 AM, phill carter < > phill.car...@oztime.com.au > >>>> wrote: > >>>> > >>>>> I'm still a few steps away from surface mount yet. > >>>>> All the gcode I have has probing for variable z height, I'll rip the > >>>>> probing out of one and post it. > >>>>> > >>>>> On Tue, 7 Jan 2014 01:48:47 -0500 > >>>>> Robert Ellenberg <rwe...@gmail.com> wrote: > >>>>> > >>>>>> On Tue, Jan 7, 2014 at 1:33 AM, phill carter < > >>> phill.car...@oztime.com.au > >>>>>> wrote: > >>>>>> > >>>>>>> I do a bit of repair work around the home, a few pcb's and lots of > >>>>>>> learning and trying things out. > >>>>>>> What got me interested in what you are doing is my original pcb > >>> etching > >>>>>>> was slooowww so I figured your changes would help. > >>>>>> Sounds like fun! Do you do any surface mount stuff? I bought a set > of > >>> PCB > >>>>>> mills / drills recently, though I haven't had much time to make any > >>>>> boards > >>>>>> yet. > >>>>>> > >>>>>> > >>>>>>> It turns out I had my acceleration way too low. The pcb gcode I am > >>>>> using > >>>>>>> is all very short line-line transitions. > >>>>>>> > >>>>>> Would you mind sharing an example of such a program that ran really > >>> slow? > >>>>>> The greater variety of test cases I can find, the easier it will be > to > >>>>>> improve and troubleshoot. For a mill with a low top speed, > increasing > >>>>>> acceleration seems to be a viable solution, but it's probably not > ideal > >>>>>> since it means you're hitting your drive system harder. If you could > >>> get > >>>>>> the same performance with lower acceleration, it could help your > >>> machine > >>>>> in > >>>>>> the long term. > >>>>>> > >>> > ------------------------------------------------------------------------------ > >>>>>> 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. 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Start your 15-day FREE TRIAL of > >>> AppDynamics Pro! > >>> > http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk > >>>> _______________________________________________ > >>>> Emc-developers mailing list > >>>> Emc-developers@lists.sourceforge.net > >>>> https://lists.sourceforge.net/lists/listinfo/emc-developers > >>>> > >>>> > >>> > >>> > ------------------------------------------------------------------------------ > >>> 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-developers mailing list > >>> Emc-developers@lists.sourceforge.net > >>> https://lists.sourceforge.net/lists/listinfo/emc-developers > >>> > >> > ------------------------------------------------------------------------------ > >> 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-developers mailing list > >> Emc-developers@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/emc-developers > >> > > > > > ------------------------------------------------------------------------------ > > 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-developers mailing list > > Emc-developers@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > > > > > ------------------------------------------------------------------------------ > 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-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------------ 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-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
