On 26 December 2017 at 20:16, Gene Heskett <[email protected]> wrote:
> But somehow, this joint.2.vel-cmd has a huge high vel spike as it ... > This spike is way faster than the z motor can usually > move, and results in a z following error at the bottom of a g33.1 move. A spike in the velocity feedback shouldn't cause any sort of following error. (does the velocity even get anywhere near the PID?) > This is despite a limit3.maxa and maxv setting in series with pid_s that > results in a quite leasurely reversal at the bottom of the stroke. There have been some problems found recently with limit3. But I have never bothered using a spindle PID, so can't really advise further. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
