Quote:
Originally Posted by MechEngVT
It might take some testing and calibration, but if he's using the right kind of motor he should be able to measure the back-EMF and correlate that with a rotor speed. Golf carts do this as part of the closed-loop ground speed control.
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Beat me to it MEVT!
Does the back-EMF vary with load?
I agree with testing on his specific system. That could give him a picture of his worst-case scenario and he could calibrate to that.