ran the experimental3 branch on real hardware tonight. The LHchips4 sounded real good. Now it peaks across the belly at close to the y axis velocity. Very nice!
Now running steve.ngc you can really see the arc issue. X is MAX_VELOCITY = 2.33 MAX_ACCELERATION = 10 Y is MAX_VELOCITY = 1.33 MAX_ACCELERATION = 15 http://imagebin.org/298016 notice the whole profile runs mostly at 1.33in/sec - with a few peaks. Now this profile has a great portion of the motion in the x axis. sam On 03/08/2014 11:50 AM, Robert Ellenberg wrote: > It would be really nice to have consistent behavior between lines and arcs > that way, though I think the limitation is not in the blend arcs > themselves. Currently, maximum speed and acceleration are calculated in > canon with conservative assumptions. For short arc segments, it should be > possible to squeeze a bit more speed / acceleration out. Unfortunately, > there isn't a good way to do the same thing with a large arc (like >90 > deg). Since the velocity changes direction so much, the overall maximum > velocity is more likely to be constrained by axis limits. > > One way around this could be to have CAM break up segments into short (20 > deg or less) arcs. Unfortunately, to prevent slowdowns, you'd have to keep > the segments longer than the minimum length for your feed (approximately 2 > * v_max / servo_period). It might be possible to do something like this in > canon too, though I'm not sure how hard it would be. > ------------------------------------------------------------------------------ > Subversion Kills Productivity. Get off Subversion & Make the Move to Perforce. > With Perforce, you get hassle-free workflows. Merge that actually works. > Faster operations. Version large binaries. Built-in WAN optimization and the > freedom to use Git, Perforce or both. Make the move to Perforce. > http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------------ Subversion Kills Productivity. Get off Subversion & Make the Move to Perforce. With Perforce, you get hassle-free workflows. Merge that actually works. Faster operations. Version large binaries. Built-in WAN optimization and the freedom to use Git, Perforce or both. Make the move to Perforce. http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
