On Fri, 10 Jul 2009, Leslie Newell wrote: > Date: Fri, 10 Jul 2009 23:12:38 +0100 > From: Leslie Newell <les.new...@fastmail.co.uk> > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] Hostmot2 homing > > Hi Peter, > >> With a small error (1 count or so) thats possible but that also most likely >> indicates that your integral term is way too low. > > LOL. Most people have been telling mee i'm using too MUCH I term... >
I think somehow the P and I terms for HostMot2 are different from m5I20 and other systems... >> Thats probably something that should be fixed in the PID component (indicate >> saturate also when integral term is in limit) > > I might do that. It isn't exactly a difficult fix. I wonder how much it > would help though as again you need a fairly high limit or you will get > nuisance tripping. I think the nuisance tripping can be avoided with the right time delay in other words if your PID output or integral term are saturated for more than 50 mS or so, you are running open loop so something is dreadfully wrong... > > I am a bit paranoid on this subject as this machine can be used as a > manual, using high resolution MPGs. Therefore a runaway could be quite > dangerous. > > Les > > ------------------------------------------------------------------------------ > Enter the BlackBerry Developer Challenge > This is your chance to win up to $100,000 in prizes! For a limited time, > vendors submitting new applications to BlackBerry App World(TM) will have > the opportunity to enter the BlackBerry Developer Challenge. See full prize > details at: http://p.sf.net/sfu/Challenge > _______________________________________________ > 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. ------------------------------------------------------------------------------ Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/Challenge _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
