So... Without ripping out the current spindle motor and starting over.. It works surprisingly well - the 0-950 acts like a normal dc motor (field voltage stays constant) The field weakening is a bit more mushy. Dropping the field voltage from 115v to 28V runs the rpm up from 950 to 2500 a bit slower..
Currently I have a 2 lincurv components that take RPM and spit out a voltage to each drive (field and armature) In front of that is a limit2 which limits the slew to 400rpm/sec. If I put a pid loop around that - it works ok - and maybe that is as good as it gets. Thoughts? On Fri, Sep 13, 2024 at 6:35 PM Sam Sokolik <samco...@gmail.com> wrote: > You are right - for just spindle control.. But the 5 year plan is to also > cnc the monarch. (and linuxcnc has all the stuff working and known - > encoder, limit2, pid, lincurve, pwmgen and so on..) I would rather not > re-invent the wheel. (and I am far from comfortable coding on the arduino) > > sam > > On Fri, Sep 13, 2024 at 6:11 PM andy pugh <bodge...@gmail.com> wrote: > >> On Fri, 13 Sept 2024 at 23:25, Sam Sokolik <samco...@gmail.com> wrote: >> >> > Enter Hal, 2 amc drives and a rpi5... (and a few other things) >> >> Much as I am a fan of LinuxCNC, that's probably a job for an Arduino, >> really :-) >> >> -- >> atp >> "A motorcycle is a bicycle with a pandemonium attachment and is >> designed for the especial use of mechanical geniuses, daredevils and >> lunatics." >> — George Fitch, Atlanta Constitution Newspaper, 1912 >> >> >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> >
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