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ESC › can ESCs sense RPM
01-31-2013 07:51 AM  5 years agoPost 1
BrianApp

rrVeteran

Grand Rapids, MI

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When using governor mode on ESCs do they have a way of sensing RPM without a separate rpm sensor? In gov mode do they just pass through a constant voltage (acting like a voltage regulator to the motor) or do they actually try to maintain a constant RPM?

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01-31-2013 08:51 AM  5 years agoPost 2
AWittleWabbit

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O.C., CA

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They sense rpm. All bl controlers know rpm at all times. This is sensed as "back emf" via the motor leads. Or more accurately, they know which magnet pole is over stator pole for "commutation ".

Gov mode truly tries to hold a set rpm. I think the fact many fbl controllers have gov function has confused you. In that instance the rpm feedback for the gov control loop must come from an external sensor. For a natively governed esc, rpm sensing and the rpm control loop are built in.

Heli-itis sufferer.

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