On Fri, Aug 23, 2019 at 8:41 PM Gene Heskett <ghesk...@shentel.net> wrote:
> > I will state that encoders with less than 1000 counts per turn aren't > going to be ultimately usefull on a mill where its also stablilizing > speed, but even a 240 count I am getting from hall effect sensors There is a trick to making this work. If you have a low-resolution encoder, what you do is NOT count the number of "ticks" per time interval. But rather measure the number of nanoseconds (not microseconds) between each "tick" Then you control the motor voltage to keep the number of nanoseconds at the desited value. In practice you sample a fast clock or counter on each encoder edge. Gives very accurate results even with poor encoders. Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
