Stepper Motor system project

Thread Starter


Joined Aug 13, 2012

Im doing research for a project that would use stepper motors. After doing some research on the web I'm not sure if the idea is even possible given the accuracy needed.

I wanted to get some opinions on the amount of error i would expect.

The design would have two stepper motors rotating simultaneously in opposite directions at 5 rpm for 1 rev, then one motor would step in one direction then they would rotate together again. The step size has to be around .01° so it would have to be microstepping at the 51,200 steps per rev level. I am aware of the typical ±5% error in stepper motors. Would an absolute rotary encoder help at this low speed? The holding torque would be around 5 in-oz.