Rotational-angle detection device and electric power-steering device provided with rotational-angle detection device

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United States of America Patent

PATENT NO 9475520
APP PUB NO 20140336878A1
SERIAL NO

14359417

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Abstract

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When a shaft misalignment detection part detects occurrence of a shaft misalignment that is a misalignment in a relative position in a radial direction of a rotary shaft between a magnet part and a sensor part, the shaft misalignment detection part outputs a shaft misalignment determination flag to a correction part and a control change instruction part. The correction part calculates a motor rotational angle so as to reduce a detection error caused by the shaft misalignment. The control change instruction part outputs instructions of changing calculation methods so that influence by the detection error decreases to an assist torque setting part and an assist current instruction part.

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Patent Owner(s)

Patent OwnerAddress
TOYOTA JIDOSHA KABUSHIKI KAISHA1 TOYOTA-CHO TOYOTA-SHI AICHI-KEN 471-8571

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aoki, Kenichiro Miyoshi, JP 109 837
Yanai, Kohei Mishima, JP 12 191

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