Electric power tool and motor control method thereof

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United States of America Patent

PATENT NO 9923492
SERIAL NO

14994422

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An electric power tool includes a motor, a power supply circuit for supplying power to the motor, and a control device which is able to measure current of the motor and control duty cycle of the power supply circuit. When the measured current of the motor is greater than a predetermined current value, the duty cycle of the power supply circuit is increased to a first predetermined value. If the current of the motor is still greater than the predetermined current value, the duty cycle of the power supply circuit is decreased to a second predetermined value such that the current of the motor is equal to or less than the predetermined current value.

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Patent Owner(s)

Patent OwnerAddress
NANJING CHERVON INDUSTRY CO LTDNO 529 JIANGJUN ROAD JIANGNING ECONOMIC AND TECHNICAL DEVELOPMENT ZONE NANJING JIANGSU 211106 211106

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Wu Nanjing, CN 99 645
Zhou, Fengqin Nanjing, CN 5 26

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