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Self-commutating, back-EMF sensing, brushless DC motor controller
Self-commutating, back-EMF sensing, brushless DC motor controller
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机译:自换向,反电动势感应,无刷直流电机控制器
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摘要
A method and apparatus to commutate the drive voltages of a brushless DC motor. The present invention determines rotor position and velocity by detecting the polarity reversal of the Back-EMF of an undriven leg when compared to a transformed pseudo-reference. In an extra measure of efficiency, the present invention is independent of hardware sensors; it includes a commutation delay timing circuit for optimization of motor operation, and it minimizes the participation of a microprocessor or other microcontroller.
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