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What is Sensorless BLDC Motor Control Insights about?
This document summarizes sensorless commutation of brushless DC motors using the zero crossing back-EMF method. It describes how BLDC motors operate and the need for rotor position information during commutation. The back EMF signal provides information on rotor position by its zero crossing points. At low speeds the back EMF signal is difficult to detect, requiring open loop control initially. Filtering is used to detect the zero crossing points from the noisy back EMF signal. While sensorless control requ
- Author
- Joe Bingham
- Language
- EN