does this work arc-arc also - or should I stay away from those programs? (or did that get fixed with teh split-cycle method?)
can't wait to bang on it thanks sam On 11/21/2013 04:19 PM, Robert Ellenberg wrote: > On Nov 19, 2013 12:18 PM, "sam sokolik" <[email protected]> wrote: >> Heh - Ok. I have been playing with it and the motion is a lot >> smoother. The velocity on the spiral is a strait line (used to be >> scaloped..) >> >> Couple more little issues.. :) >> On the spiral - if you pause it - then single block it. (try it - I >> dare you) ;) - it will take off in some random direction - or do a >> circle over and over. (kinda looks like the maybe the last blend move >> gets extended... ) Then when you take it out of single block - you get >> a large step change in acelleration/velocity as it goes to where it >> supposed to be instantly and continues on. > This should be fixed in the latest push. > >> I don't know how the feedrate override should act. I had mentioned that >> it didn't violate the constraints when I want to 120% - (its speed went >> up also 290ipm vs 350ipm. But then I thought - ok - so then I should be >> able to set the FO max to 100% in the ini and get 350ipm... but It >> doesn't - I still get 290ipm. (I was thinking it calculated worse case >> for the FO) So there must be some headroom in there. >> >> Ok - thinking out loud... I just set the FO in the ini to 200%. I was >> thinking I would break it being able to go over - but you have some sort >> of checking in there (more like the original planner) where it seems to >> stop at 350ipm and doesn't go over acceleration constraints. That is >> cool. Maybe you have 120% hard coded? huh? Do you? ;) >> >> Well - one more thing - setting the feed rate override to 200% cause the >> program not to end like before. (the motion ends but axis still thinks >> it is running the program - the play button is pushed.) ie.. >> http://imagebin.org/277887 Notice though - the constraints are >> obeyed... Yay > Yeah, feed override needs more work. The current version should at a > minimum not fail under feed override, but it doesn't give optimal behavior > either. If we can get to the point of there being no acceleration > violations under any circumstances, the next step is to improve the > override. I just don't want to build additional stuff on top of a buggy > base, then have to debug both at the same time. > > The good news is, I found a way to eliminate overshoot of trajectory > segments. Previous versions had a bunch of band-aid fixes to prevent > overshoot from causing too much damage, but made if very difficult to > control acceleration during tangent "joints". The new "split-cycle" method > uses the exact time that a segment ends, and updates the next one with the > difference. > > If you have some time, could you give it a quick sanity check? I don't need > exhaustive testing for another few days, but a quick check to see if you > can break it would be very helpful. Stepping, crazy feed overrides, spindle > start/stop, coolant, whatever you can think of to trip it up is fair game. > My goal is to get this on hardware ASAP. > > Thanks! > > Rob > ------------------------------------------------------------------------------ > Shape the Mobile Experience: Free Subscription > Software experts and developers: Be at the forefront of tech innovation. > Intel(R) Software Adrenaline delivers strategic insight and game-changing > conversations that shape the rapidly evolving mobile landscape. Sign up now. > http://pubads.g.doubleclick.net/gampad/clk?id=63431311&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------------ Shape the Mobile Experience: Free Subscription Software experts and developers: Be at the forefront of tech innovation. Intel(R) Software Adrenaline delivers strategic insight and game-changing conversations that shape the rapidly evolving mobile landscape. Sign up now. http://pubads.g.doubleclick.net/gampad/clk?id=63431311&iu=/4140/ostg.clktrk _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
