Thanks a lot for your help!
So the only way to determine the appropriate motor starting/stopping speed and acceleration ramp is through trial and error? My concern with this approach is that my machine is 4000 steps per inch, so it may be difficult or even impossible to tell if a low number of steps are being lost.
The image below is from the page I linked to in my previous post; it shows the speed/torque characteristics of my motor, which I'm running bipolar at 36V.
Is it normal for a stepper motor to vibrate a lot at lower speeds?
And would anyone have any idea why the motor jerks back and forth uncontrollably between 40rpm to 54rpm? (on either side of that range, higher or lower, it runs fine). Is that the "resonant frequency" that I keep reading about?
Appreciate all your help
My hobby website: www.roboticsguy.com