Drive control system of operating machine, operating machine including drive control system, and drive control method of operating machine

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United States of America Patent

PATENT NO 9732770
APP PUB NO 20160040690A1
SERIAL NO

14782454

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Abstract

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A drive control system of a hydraulic excavator includes a control device. When accelerating a turning body to a target turning speed, the drive control device controls an operation of the electric motor driving device such that the electric motor outputs high efficiency torque by which a highest electric power efficiency is obtained at the target turning speed. The control device controls an operation of an oil pressure supply device such that residual torque obtained by subtracting the high efficiency torque from target torque is output from an oil-pressure motor.

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Patent Owner(s)

  • KAWASAKI JUKOGYO KABUSHIKI KAISHA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iwabe, Kazuya Kobe, JP 7 11
Muraoka, Hideyasu Akashi, JP 46 153
Yudate, Yoji Kobe, JP 11 59

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