I looked at the unit. It seems like a good idea. It uses inputs from both the motor's shaft encoders and another encoder on the object that is being moved, like a linear encoder on the table.
Question: Let's say I wanted to do this myself. Is there a method that "everyone" in the machine tool industry uses for combining the reading of multiple encoders? If not it seems like the perfect application for a Kalman filter. But maybe you don't combine them but use the linear DRO for position loop and the motor shaft encoders for velocity. This is a common problem I think with robot arms. The joint has an angle sensor but the motor has a shaft encoder. So the control loops might be nested. It reminds my the old saying the "A man with a watch knows what time it is, a man with two watches is never sure of the time." On Fri, May 11, 2018 at 7:33 PM, jeremy youngs <jcyoung...@gmail.com> wrote: > I have no experience, I do have a next victim for conversion, a 10*50 comet > knee mill. It has Sony scales on it , I will attempt to read them with this > message card once I get there, if they prove good I'm going to try a pair > of these , eBay item number > 322393653446 > The beauty of it is it closes the loop and tracks the table, without > backlash . Pretty slick I think. > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
