I had bought a few and thought I would play with them. Figured out pretty quickly that they have way too much noise for closed loop servo control. I demoted them to rpm sensors. I put one on the monarch spindle motor. Tuning for spindle speed was acting goofy. I finally broke out halscope and look at the velocity from the mesa encoder counter (this is velocity-rpm)
https://photos.app.goo.gl/WyDxavoi2NBNPG797 IF I did the math correctly - every rotation of the motor - the rpm varies 250rpm. (about 1700rpm and 3 cycles every 100ms) I might swap it out. I don't know yet. I don't know how well I can tune this motor with field weakening.. Here is after I lowpassed the rpm at a gain of .01. https://photos.app.goo.gl/1icRGaFH2AVTSS4i8 that is an overshoot of about 150 rpm. (totally usable - for me it is pretty great) sam _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
