I read with interest the recent thread on Spindle Speed in the hope it would answer my question, but it didn't quite get there!
I'm converting a Boxford 190VMC mill to use EMC. I have everything basically working but I have been unable to figure out how to get closed loop control of the spindle speed. The spindle has a 50ppr encoder and is driven by a variable speed drive that wants a 0-10V signal to span the range up to 3500rpm. The voltage/speed relationship is quite non-linear. I've hooked up a counter to give me a speed readout via pyvcp. At the moment I'm driving the spindle open loop using a lookup table implemented with the linear8 Hal component. But how would I implement closed loop speed control? Is there some documentation I've missed, or can someone give me some pointers please? Steve -- ------------------------------------------------- Visit Pipex Business: The homepage for UK Small Businesses Go to http://www.pipex.co.uk/business-services ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
