Title:
【発明の名称】自立航法装置に用いる角速度センサの較正装置
Document Type and Number:
Japanese Patent JP2669889
Kind Code:
B2
Abstract:
In a self-contained navigational system wherein the location and heading of a vehicle on road are detected with the aid of location and heading detection means using map matching, a calibration apparatus of an angular-velocity sensor used in the self-contained navigational system, comprising: an angular-velocity detection sensor (15) for detecting a heading of the vehicle; angular-velocity detection means (1) for calculating an angular velocity from an output signal of the angular-velocity detection sensor (15); integration means (2) for calculating a current heading of the vehicle by integrating the angular velocity and by adding the integrated angular velocity to the previous heading of the vehicle; and heading correction means (4) for calculating a difference between a heading output ( theta r) of the integration means (2) and a heading output ( theta e) of the location and heading detection means (3), for calculating a correction value ( delta theta ) for correcting the heading output ( theta r) of the integration means (2), from the difference or accumulated value of the difference, and for feeding the correction value ( delta theta ) back to the integration means (2).
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Inventors:
Osamu Shimizu
Kenji Tenmoku
Doi Yoichi
Kunihiko Mito
Kenji Tenmoku
Doi Yoichi
Kunihiko Mito
Application Number:
JP8844089A
Publication Date:
October 29, 1997
Filing Date:
April 07, 1989
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
G01C21/00; G01C17/38; G01C21/30; G01C25/00; G01P21/00; (IPC1-7): G01C21/00; G01C25/00
Domestic Patent References:
| JP2110316A | ||||
| JP6488312A | ||||
| JP63115004A | ||||
| JP61258112A | ||||
| JP60249012A | ||||
| JP2247521A | ||||
| JP63109315A | ||||
| JP6435312A |
Attorney, Agent or Firm:
Hirokatsu Kamei (1 person outside)