On Saturday, April 07, 2012 09:39:56 PM Stephen Dubovsky did opine: > Thats a common first order/single pole IIR (infinite impulse response) > filter. You can find equations on the web based on the > sampling(execution) rate to calculate the gain given a desired cutoff > frequency. > > I wonder if the thread jitter causes the errors. Since the timebase > over which the measurement is done varies you think it would affect the > output. > Servo thread jitter shouldn't be bad enough to cause a 50% variation though.
I ran it up to full speed in high gear today, and was getting a range from 42-51 RPMS, at 2600 revs. So it appears I will not be restricted to spindle low gear when this is in use. Thanks Stephen. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> "Life begins when you can spend your spare time programming instead of watching television." -- Cal Keegan ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
