Construction machine

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United States of America Patent

PATENT NO 12106017
APP PUB NO 20220222392A1
SERIAL NO

17607914

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A position/posture computing section determines that an azimuth of an upper swing structure calculated at a GNSS receiver is of low quality when at least one of a posture angle of the upper swing structure acquired at a machine-body IMU and a posture angle of a front work implement acquired at a boom IMU is equal to or larger than a threshold value, executes a bias removal computation on the basis of the quality of the azimuth and the azimuth of the upper swing structure calculated at the GNSS receiver, calculates a corrected azimuth of the upper swing structure on the basis of the azimuth of the upper swing structure calculated at the GNSS receiver, and an angular velocity of the upper swing structure from which a gyro bias has been removed, and computes a three-dimensional position and posture of the front work implement by using the corrected azimuth.

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Patent Owner(s)

  • HITACHI CONSTRUCTION MACHINERY CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishihara, Shinji Tokyo, JP 49 333
Izumi, Shiho Tsuchiura, JP 77 678
Kotake, Shinichi Tsuchiura, JP 3 6

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