On Sat, 3 Oct 2009, John Thornton wrote: > Date: Sat, 03 Oct 2009 14:26:19 -0600 > From: John Thornton <bjt...@gmail.com> > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: Enhanced Machine Controller EEMC" <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] PWM tuning with hostmot2 and 7i33 > > Ok, I think I understand now. So somethin to imput a change in the commanded > position > with a trigger for the scope and watch the commanded vs the actual position > to tune that > drive. How big of a step would you take? > > Thanks > John
Big enough so the encoder resolution and any mechanical backlash are swamped out by the size of the move say a 1/4 inch or so. Depending on the exact drive/mechanical characteristics, you may need to limit the acceleration to prevent damage > > On 3 Oct 2009 at 10:35, Peter C. Wallace wrote: > >> >> Either a gcode or HAL test setup that can take a step (instant jump >> in >> commanded position) so the step response of the servo can be >> captured via >> HALScope. I cant really imagine hand tuning without being able to >> see a plot >> of the servo systems step response. >> >> Peter Wallace >> Mesa Electronics >> > > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry® Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9-12, 2009. Register now! > http://p.sf.net/sfu/devconf > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
