Motor

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United States of America Patent

PATENT NO 11973456
APP PUB NO 20210281198A1
SERIAL NO

17261366

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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According to the present invention, provided is a motor of which a controller generates an index signal at a second time point delayed from a first time point at which a pulse due to an index magnet is detected among pulses of a pulse width modulation (PWM) signal detected by a second Hall sensor, compares a second time point which is input in advance based on a constant speed condition of the motor and a detected second time point to obtain a first error, compares a duty value, which is input in advance based on the constant speed condition of the motor, of a PWM signal and a duty value of a detected PWM signal to obtain a second error, and controls a speed of the motor on basis of the first error and the second error.

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First Claim

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Patent Owner(s)

  • LG INNOTEK CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lee, Jin Seob Seoul, KR 8 2

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