Motor actuator and power steering apparatus using the same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10486739
APP PUB NO 20190077450A1
SERIAL NO

16084705

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Short circuit abnormality between redundant systems with respect to motor redundant systems is detected. A motor actuator includes a first inverter circuit configured to control power supplied to a first motor stator, a second inverter circuit configured to control power supplied to a second motor stator, and a control unit portion including a calculation circuit. The control unit portion includes a first inverter control portion configured to output a control signal for controlling driving of the first inverter circuit, a second inverter control portion configured to output a control signal for controlling driving of the second inverter circuit, and a short circuit determination portion configured to, when the power is supplied only to one inverter circuit of the first inverter circuit and the second inverter circuit by the first inverter control portion or the second inverter control portion, determine presence/absence of a short circuit between the first motor stator and the second motor stator based on a conductive state of the other inverter circuit of the first inverter circuit and the second inverter circuit.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
HITACHI AUTOMOTIVE SYSTEMS LTD2520 TAKABA HITACHINAKA-SHI IBARAKI 312-8503

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sasaki, Mitsuo Hadano, JP 120 806

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