I have tried the at_pid.. I have not had it work for me (create workable PID numbers) Even with velocity mode amps.
sam On 4/7/2016 11:36 AM, Gene Heskett wrote: > On Wednesday 06 April 2016 05:50:30 andy pugh wrote: > >> On 6 April 2016 at 09:53, Marshland Engineering >> >> <marshl...@marshland.co.nz> wrote: >>> The only way I can get any control over the travel is setting P = >>> 0.5 which of course makes the position accuracy poor. >> I am not sure that that necessarily follows. The P term is correct >> when it is correct, there isn't a target value. >> You should be able to correct steady-state errors by adding I. You may >> be able to damp the oscillations with a little bit of D (expect D to >> be a tiny fraction of P) > Is this a point where it might be recommended to use the "at-pid" module, > read the manpage carefully, and see what sort of results can be > obtained? I have not tried this myself, but have the manpage preprinted > for the next time I go play with the newer mill. > > I think it would be a Good Thing(TM) if we can build up a database of > sorts showing that it can do automatically, at least as good as we can > do manually, at a considerable time savings in arriving at a well > working setup overall. > > But in the 9 years since its advent, I can only recall a very few > comments about it, how well it works etc, so obviously it is not being > at all widely used. N.I.H. syndrome perhaps? > > With man page in hand, I intend to see how well I can make it work, and > if it gives better results than my own cuss & cry efforts have managed. > But ATM, I am rummaging thru the midden heap in here, trying to find > what I need to get my taxes filed by the 15th. And generating 13 gallon > trash bags full of shredded paper that should have been shredded 4 years > or more ago. Packratitis is incurable, darn it. > > Cheers, Gene Heskett ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
