On 16 March 2014 00:06, Gene Heskett <[email protected]> wrote: >> Alternatively, why not run closed-loop spindle speed, then it doesn't >> matter if the control is non linear. > > Because of the positive gain, enough Pgain to make it work fairly stiff > at 300 rpm, is enough to make it obviously oscillate at 800 rpm and up.
Have you ever wondered why Lincurve has an i/o pin copy of its output? This is because my intended use-case was for making PID gains variable in relation to other things, and Pgain and friends are (rather oddly) bidirectional pins. So, lincurve is perfect for making your PID gains vary with spindle speed. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/13534_NeoTech _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
