On Wed, Sep 15, 2010 at 1:53 PM, Chris Radek <ch...@timeguy.com> wrote:
> On Wed, Sep 15, 2010 at 12:16:40PM -0500, Stuart Stevenson wrote: > > Gentlemen, > > > > http://www.mpm1.com:8080/machines/enshu/Screenshot.png > > This is set up with Pgain = 10, FF1 = 1 and scale = 8.89. > > I have tried Pgain = 0 - got no PID output > > Pgain = 100 - got a little better > > Pgain = 300 - not much better but didn't feel as good > > > > The accel side looks much better but as I increase P I start to see sharp > > points and flats on the curve. > > I think I want to reach symmetry? How to do that? > > thanks > > Stuart > > > > It doesn't look at all right to me. Unless the machine was very > sluggish originally, the accel you are getting here seems really low. > > Could you update the ini and hal files online? The ini still says > OUTPUT_SCALE 1.0 - is that the one you changed to 8.89? > will do - should be there within 5 minutes > > In this screenshot the axis starts decelerating halfway through your > 1" move, which is about when EMC thinks it's already at the endpoint. > Something is still grossly wrong with dac/pid scaling/maxoutput or amp > settings; you're not yet into the realm of where tweaks to tuning > numbers will fix it. > > Can you put a voltmeter on the amp's velocity input and see if you're > getting near 10v when you command a rapid? If you have it set the way > I suggested, and all is working right, you should see about 9 volts. > just got back from lunch - this is the very next thing I will do > > If it's 0.9 or some other number, you've got a smoking gun. I think > it should be working a LOT better than this. > > > ------------------------------------------------------------------------------ > Start uncovering the many advantages of virtual appliances > and start using them to simplify application deployment and > accelerate your shift to cloud computing. > http://p.sf.net/sfu/novell-sfdev2dev > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- dos centavos ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
