you are missing arc-line transitions in your table.... is this an oversite?
https://www.dropbox.com/s/o5he7ijpplkvc8r/Trajectory%20Lookahead%20with%20Arcs.pdf thanks sam On 10/24/2013 10:08 AM, Robert Ellenberg wrote: > It is possible to do it on the parabolic blends as well. That was actually > the original plan. The downside of doing it that way is that the it's hard > to isolate tangential acceleration from the total acceleration, since they > aren't always perpendicular. It also makes the trapezoidal velocity profile > a bit more complex. I'm hoping that tangent arcs solve enough of the > slowdown that we won't need to optimize the remaining parabolic blends. > > Rob > On 24 October 2013 15:00, Robert Ellenberg <rwe...@gmail.com> wrote: > >> The good news is, we don't have to do any optimization for the > conventional >> blends. The idea of using arcs is to create a tangent path that doesn't >> need any blending, but there will be cases where that's not easy, so we >> fall back to traditional blending. In this case, the segments start and >> stop at zero speed, so we don't need to do any optimization. > I think I am confused about the link between blending and lookahead. > > Is the back-propogation of the maximum speed (which I think was your > "rising tide" optimisation) only possible with the circular arc > blends, or can it also be applied to the current parabolic blends? > > Of course, if you would rather do the work than explain the work, that's > fine. > > -- > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto > > ------------------------------------------------------------------------------ > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most > from > the latest Intel processors and coprocessors. See abstracts and register > > http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------------ > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from > the latest Intel processors and coprocessors. See abstracts and register > > http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > > ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
