2012/12/14 Jon Elson <[email protected]>: > Dave Caroline wrote: >> if the encoder is on the motor there will be a small hysteresis to the >> movement due to the friction. >> if on the screw then I can see a small effect on the loop as the servo >> will move and not the screw. >> can you rotate 90 degrees and hang the motor below. >> > I put the encoders on the ballscrew, and have had no problem with it. I > do tension the > belt VERY tightly to eliminate any "flapping", and the belt is quite > short, the shafts > are about 3" apart.
The small problem here is that putting encoder on ballscrew is just a waste of encoder as the nut is rotating and the screw is fixed :)) -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
