Current detection apparatus, current detection method, current control apparatus, and current control method

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United States of America Patent

PATENT NO 11846657
APP PUB NO 20220268814A1
SERIAL NO

17668383

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Abstract

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A current detection apparatus includes first current detection circuitry configured to detect a current flowing through a conductive wire with a shunt resistor connected to the conductive wire to obtain a first detected current value; second current detection circuitry configured to detect the current with a Hall element to obtain a second detected current value; a storage configured to store a first probability distribution information of the first current detection circuitry and a second probability distribution information of the second current detection circuitry; synthesis circuitry configured to convert the first and second detected current values into first and second probability distributions based on the first and second probability distribution information, respectively, and to synthesize the first and second probability distributions to obtain a synthesized distribution; and estimation circuitry configured to obtain an estimated current value via a maximum likelihood estimation based on the synthesized distribution.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA YASKAWA DENKI2-1 KUROSAKI-SHIROISHI YAHATANISHI-KU KITAKYUSHU-SHI FUKUOKA 806-0004

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kita, Hiroyuki Kitakyushu, JP 44 355

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