On 12/04/2013 02:19 PM, Leonardo Marsaglia wrote: ... snip > I managed to move the motor and do some tests but I can't get rid of the > oscillation from the PID. If I follow the classic way of tunning the > algorithm when I increment P I don't see any oscillation until I disturb > the motor. When that happens I get a really strong vibration and right > after that a following error. What I'm saying is I can't even start to test > my error to decrease it. > > My vfd is configured with +/-10 volts input and the endoer is roughly > attached to the motor but it's quite firm. When I mount it on the screw > it's going to be perfectly installed now is for testing purposes.
... snip Off hand, I would guess your PID and the VFD tuning are not playing well together. Either remove the LCNC PID and tune the VFD, or set the VFD to disable its PID and tune LinuxCNC. I have no experience with this but this is what comes to mind. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ ------------------------------------------------------------------------------ Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
