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Patent Searching and Data


Title:
ERROR CORRECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/187594
Kind Code:
A1
Abstract:
An error correction device 34 for correcting an error in a measured value from a sensor device equipped with a GNSS sensor and a gyro sensor and provided to a work vehicle, said error correction device being equipped with: a first acquisition unit 341 for acquiring the speed vector of the work vehicle in a local coordinate system by measuring using the GNSS sensor and the angular velocity thereof in a sensor coordinate system which has three axes and has the sensor device as a reference by measuring using the gyro sensor; a second acquisition unit 343 for acquiring the steering amount of the work vehicle; a set position determination unit 344 for determining, on the basis of the acquired steering amount, a set position which is set in a different position in the sensor coordinate system than is the sensor device; and a speed vector correction unit 347 for correcting the speed vector of the work vehicle measured by the GNSS sensor by calculating the speed vector of the work vehicle at the determined set position on the basis of the speed vector of the work vehicle at the measured position and the acquired angular velocity.

Inventors:
ARAKANE HIROOMI (JP)
YOSHIDA TOYOORI (JP)
FUNAYAMA MASAYUKI (JP)
Application Number:
PCT/JP2021/011182
Publication Date:
September 23, 2021
Filing Date:
March 18, 2021
Export Citation:
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Assignee:
TOKYO KEIKI INC (JP)
International Classes:
G05D1/02; A01B69/00; B62D6/00; G01C21/28; B62D113/00
Domestic Patent References:
WO2016060283A12016-04-21
WO2010045350A12010-04-22
Foreign References:
JP2011059065A2011-03-24
JP2016053553A2016-04-14
Attorney, Agent or Firm:
AKAZAWA, Hideo (JP)
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