On Wed, 1 Mar 2017 07:46:24 -0600 dragon <tfishw...@gmail.com> wrote:
> I have a project coming up soon that involves a retrofit of a Cel-Con > HMC. The owner has a bunch of AMC BE25A20 drives to use on it. The servo > motors are Fanuc red caps and we have some of Pico Systems' converters > that give us the hall and encoder signals from the motors. > > I have been doing a bunch of reading trying to figure out if it is > better to run the servo amplifiers in velocity mode or torque mode. I > have found many references that AMC recommends always using torque mode > for CNC applications, and indeed that is how Galil uses their > amplifiers. I have also read however that control is more precise and > 'definitive' when the amplifier can run in velocity mode with the loop > closed by connecting tach or encoder feedback to the amp. > > What is the consensus on this from LinuxCNC users and developers? What > have been your experiences? It is harder to tune the PID regulator with torque as an input than with velocity as an input for position control. Usually there is a inner velocity loop with an outer position loop. ------------------------------------------------------------------------------ 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
