On Sat, 2007-08-04 at 01:41 -0500, RogerN wrote: > ----- Original Message ----- > From: "John Kasunich" <[EMAIL PROTECTED]> > To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > Sent: Friday, August 03, 2007 11:21 AM > Subject: Re: [Emc-users] HAL Error, what did I do wrong? > > > > This is a head-scratcher. ... snip > I added another limit 2.0 to the feedback rpm going into the pid loop. > I limited the rate of change to 3000 rpm / sec figuring 3 rpm per 1ms > servo thead fperiod. So now my negative spike generated from threading > resetting the spindle position will be limited to 3 rpm in one servo > period. If this thing is tunable I should have a pretty nice closed > loop spindle control... hopefully! > > Thanks again > > Roger Neal
Would the analog signal from tachometer be easier to use for feedback? Kirk Wallace ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
