Vehicle yaw rate correction
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United States of America Patent
Stats
-
Apr 8, 2014
Grant Date -
Sep 5, 2013
app pub date -
Feb 28, 2013
filing date -
Mar 1, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A control system or method for a vehicle references a camera and sensors to determine when an offset of a yaw rate sensor may be updated. The sensors may include a longitudinal accelerometer, a transmission sensor, a vehicle speed sensor, and a steering angle sensor. The offset of the yaw rate sensor may be updated when the vehicle is determined to be stationary by referencing at least a derivative of an acceleration from the longitudinal accelerometer. The offset of the yaw rate sensor may be updated when the vehicle is determined to be moving straight by referencing at least image data captured by the camera. Lane delimiters may be detected in the captured image data and evaluated to determine a level of confidence in the straight movement. When the offset of the yaw rate sensor is to be updated, a ratio of new offset to old offset may be used.
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