Motor forward and reverse rotation detector and motor driver having motor forward and reverse rotation detector

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United States of America Patent

PATENT NO 12095404
APP PUB NO 20240072695A1
SERIAL NO

17972566

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A motor forward and reverse rotation detector and a motor driver having the motor forward and reverse rotation detector are provided. A rotor position detecting circuit detects a position of a rotor of a motor to output a commutation signal. A forward and reverse rotation detecting circuit detects a back electromotive force of the motor to output a back electromotive force detected signal. The forward and reverse rotation detecting circuit, according to a phase relationship and a phase difference between the back electromotive force detected signal and the commutation signal, determines which one of a forward direction and a reverse direction is a rotational direction of the motor to output a rotational direction detected signal. A motor driving circuit drives the motor according to the rotational direction detected signal.

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Patent Owner(s)

Patent OwnerAddress
ANPEC ELECTRONICS CORPORATIONNO 6 DUSING 1ST RD HSINCHU SCIENCE PARK HSINCHU 300

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Kun-Min Hsinchu, TW 64 903
Chien, Shih-Hai Hsinchu, TW 8 3

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