I've been trying to build a sensorless brushless speed controller using some mosfets and an arduino, and I've been able to run the motor 'blindly' using a preset delay. My problem is, I don't quite know how to switch over to a closed loop control using the back EMF from the undriven coil of the moto…

Brushless motor algorithm

michinyon May 17, 2014, 8:04am 2

what do you mean by "the undriven coil" ?

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