Hi All,The followig is two emails from over a decade ago.
[Emc-developers] Proposing a Lookahead implementation for the EMC2 module From: Robert E. <rw...@gm...> - 2013-09-28 19:32:10 Hi All, I'm a grad student working on trajectory planning for robots. While doing some fine-detail work using LinuxCNC on a mini-mill, I've bumped up against the feed rate limitations due to small G-Code segments. Since this kind of thing is my area, I wrote up a proposal to improve speed through a longer queue and lookahead, linked here as a PDF: https://www.dropbox.com/s/p1g1zbwmviv5cn7/LinuxCNC%20Lookahead%20Proposal.pdf I'm obviously a bit of an outsider to emc development, so any feedback you all have (positive or negative) would be greatly appreciated. Thanks! Rob [Emc-developers] An alternative method of trajectory lookahead From: Robert E. <rw...@gm...> - 2013-10-15 00:02:32 Hi All, Thanks to the extensive feedback and advice I got from everyone on the lists, a few concerns arose that my original proposal didn't fully address. I wrote up another PDF that explains a variation on the original approach that should be easier to develop and test, and potentially could be more robust in the future. https://www.dropbox.com/s/o5he7ijpplkvc8r/Trajectory%20Lookahead%20with%20Arcs.pdf I'm curious what everyone thinks of this strategy, and if there are any pitfalls or risks I didn't think of. In particular, I'm curious about potential conflicts with spindle-synchronized motion, and if the simulation provides a means to test CSS moves and rigid tapping. Thanks! Rob These pdfs are the documents on trajecory planner in liunxcnc.The above two links is invalid now!Who could email me a copy?Thanks Hugh _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
