On May 27, 2012, at 5:30 AM, andy pugh wrote: > On 27 May 2012 05:16, Jeshua Lacock <jes...@3dtopo.com> wrote: > > >> The drive is dithering at 0.0003 - 0.0006 with the worst spike now at 0.0012. > ... >> One encoder pulse is 0.0003 on this axis. Would tuning the PID help with the >> "spikes" > > You could consider setting the PID deadband to 1 or 2 encoder counts > if you don't need sub 0.001" positioning accuracy.
Hi Andy, Funny you should mention that, just last night curiosity got the better of me and I started experimenting with the deadband for the first time. I had no idea what I was doing, I just kept increasing the value until it got really quiet (which happened to be about 3 encoder counts). Cheers, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated <http://3DTOPO.com> Phone: 208.462.4171 ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
