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. 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
