On 17 April 2013 04:37, Gregg Eshelman <[email protected]> wrote: > Would a 0.0002" or 0.00005" resolution linear magnetic scale be good enough > to use instead of a servo encoder?
> The old Anilam Crusader M system uses tachometers and glass scales so any > reason LinuxCNC couldn't use magnetic scales of higher resolution? Is there any reason LinuxCNC couldn't use tachometers and glass scales? If the tachos go direct to velocity-mode drives then LinuxCNC doesn't even need to know about them. But there is no fundamental reason why LinuxCNC can't run a separate velocity loop and position loop given accurate-enough bipolar analogue inputs. The Mesa 7i87 has 12 bits of resolution, I wonder if that would be enough? -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis & visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
