What drive and system voltage are you using here? Toroids don't make any sense anymore. Switching power supplies DO perform great, unless you overload 'em with BEMF, but a toroid is vulnerable to that too. Specifically Meanwell switching supplies perform reliably.
Resonance seems to be resolved AFAIK like 10 yrs ago with GeckoDrive, then GeckoDrive rendered obsolete by this DSP stuff, then THAT was rendered obsolete by DSP+3phase. Of course this doesn't mean a stepper can do 10K RPM, but the torque does perform to the spec profile at least. Mechanical dampeners are obsolete, unless you want a retro "steampunk" aesthetic. There's one exception that DSP drives can't tolerate a 4th order system, i.e. a springy connection between the motor and load. Unless the motor has its own dampening. But no one does a springy thing like that. Ordinary spring couplers don't count as springy for this purpose. Yep full disclosure I drank one too many at the moment, but I'm instinctively compelled to get right to the point and help you with your resonance thing. Get some 3ph and the 3DM683 and I think you'll start to cry. Danny > Its amazing the papers one can come across from a google search. For > instance, this one bears testing out: > > <http://machinedesign.com/news/how-take-vibration-out-stepmotors> > > Look at the last wiring diagram. I may try this tomorrow with the small > motor just for S&G. The theory is that it rotates the resting position > by 1/2 of whatever the microstep angle is, with the real effect coming > from there never being a condition where one winding is completely off. > > This should result in a smoother step whose absolute movement angle is > more consistent from step to step regardless of the current setting, > where with the upper two configurations, smoothness and equal angle per > step performance is much more dependent on the current mapping in the > driver matching the magnetic characteristics of the motor. I am going to > put the nema 24 motor in but that depends on whether I had the great > good sense to buy two of those 20 tooth pulleys, so I can bore the 2nd > one to 8mm. It will be a bit under driven, the m542T driver does 4.2 > amps peak at full song, but this motor says 4.5 amp rms for max twist. > > Might have to buy a heavier driver & toroid power tranny to feed it. > This one is heating some feeding the M542T 46 volts at its full current > of 4.2 amps peak. > > News tomorrow night maybe. > > > Thanks Danny. > > Cheers, Gene Heskett ------------------------------------------------------------------------------ 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
