Motor control device and electric power steering device using same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9575127
APP PUB NO 20140054103A1
SERIAL NO

14114576

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Provided are a motor control device (1) for controlling a motor (2) having a plurality of phases, for quickly and accurately detecting a phase in which an open-state fault has occurred when the open-state fault occurs in a target phase. When a power-supply voltage (Vb) is equal to or higher than a predetermined voltage (Vthr), a motor rotation speed (ω) is equal to or lower than a predetermined speed (ωthr), a target x-phase voltage command (Vx*) is not in the vicinity of zero, a current (Ix) of the target x-phase is equal to or lower than a predetermined current (Iu_thr), and a state in which a control error is equal to or larger than a predetermined error is detected over a predetermined time period or longer, occurrence of an open-state fault in the target phase is determined.

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Patent Owner(s)

  • MITSUBISHI ELECTRIC CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujiki, Yusuke Chiyoda-ku, JP 2 45
Iezawa, Masahiro Chiyoda-ku, JP 35 234
Iwami, Eiji Chiyoda-ku, JP 10 100
Kamei, Sadaaki Chiyoda-ku, JP 5 92
Kezobo, Isao Chiyoda-ku, JP 49 489
Kimpara, Yoshihiko Chiyoda-ku, JP 41 357
Kishioka, Hiroyuki Chiyoda-ku, JP 2 31
Okada, Jiro Chiyoda-ku, JP 18 183
Zeniya, Susumu Chiyoda-ku, JP 10 145

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