The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2024
Filed:
Nov. 01, 2022
Anpec Electronics Corporation, Hsinchu, TW;
Kun-Min Chen, Hsinchu, TW;
ANPEC ELECTRONICS CORPORATION, Hsinchu, TW;
Abstract
A motor driver using a correcting mechanism on a sensed motor position is provided. A rotor position detector circuit senses a position of a rotor of a motor to output a commutation signal. A back electromotive force detector circuit detects a back electromotive force signal of the motor. An actual phase difference calculator circuit calculates a phase difference between the back electromotive force signal and the commutation signal as an actual phase difference. An error phase angle calculator circuit calculates a difference between the actual phase difference and a reference phase difference as an error phase angle. A motor driving circuit corrects the commutation signal according to the error phase angle. The motor driving circuit determines the position of the rotor of the motor to drive the motor according to the corrected commutation signal.