On 11/01/2011 5:50 AM, Andrew wrote: > Hi, > Anyone can share the source of inexpensive linear scales/encoders? I'm > looking for 5-10um resolution, quadrature is better as I plan to > connect them to MESA 7i39. BTW, how can I connect encoders with > differential output to 7i39? > 10 um = ~ .0004" which is pretty low resolution. Some people have tried this, it does not give great performance. You generally want 10 X the displayed resolution for smooth servo control. Also, you MUST have minimal backlash between the motor and the linear slide, so unless you have zero-backlash ballscrews, you will have very annoying servo hunting.
Jon ------------------------------------------------------------------------------ RSA® Conference 2012 Save $700 by Nov 18 Register now! http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
