Blog: Stepper Motor Sizing

Sizing: Ringing and inertia mismatch

I’m sorry if you Googled “ringing” because of a hearing issue and end up on this blog. You should Google “tinnitus” instead or search the WebMD site. Now where were we? Oh yea, in our last posting we were talking about load-to-rotor inertia matching. We had established the following load-to-rotor inertia ratios:

Sizing: stepper motor physical size

Our last posting talked about applications that had marginal torque and that caused our “Hybrid” motor to correct its position. These applications were essential “path critical” and the correcting moves the “Hybrid” control did cause the path or the move time to vary. Proper motor sizing avoids this issue.