ANGULAR VELOCITY DETECTING DEVICE, ANGULAR VELOCITY DETECTING METHOD, MOVEMENT STATE DETECTING DEVICE AND NAVIGATION DEVICE
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Sep 12, 2013
app pub date -
Jul 15, 2011
filing date -
Nov 18, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An angular velocity detecting device which can estimate and detect correct mounting angles of a gyro sensor is achieved using outputs from the gyro sensor. The gyro sensor measures angular velocities in a sensor coordinate system and outputs them to an angular velocity calculating unit. A bias component removing unit of the angular velocity calculating unit carries out time average processing of the sensor coordinate system angular velocities, divides the sensor coordinate system angular velocities by time average values, and outputs them to a misalignment angle estimating unit. The misalignment angle estimating unit calculates, during a period in which a movable body is turning, a roll direction misalignment angle αφ using an angular velocity ωyse in a pitch angle θ direction and an angular velocity ωzse in a heading ψ direction in the sensor coordinate system. The misalignment angle estimating unit calculates a pitch direction misalignment angle Δθ using an angular velocity ωxse in a roll angle φ direction and an angular velocity ωzse in the heading ψ direction.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully