> > That said - that's a dual loop with two different encoders. > > That's not really the same dual loop when you have LinuxCNC and a Closed > > Loop Stepper/Servo Driver. > > If you only have one feedback source, how can you have a dual feedback > loop? With the feedback closed on the driver, your joint will be treated as > if its open loop by linuxcnc. > Yes, Linuxcnc will use a pid but its generally not aware of the drive's > encoder. Its just dealing with step and direction pulses. >
That is exactly the point I was trying to make. I guess the closed loop on the driver will do a decent job. But such a system does not really seem to be in the full spirit of LinuxCNC being in control. _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
