METHOD FOR DETERMINING A TILT ANGLE OF A VEHICLE
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United States of America Patent
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-
Dec 9, 2008
Grant Date -
Dec 25, 2008
app pub date -
Jun 22, 2007
filing date -
Jun 22, 2007
priority date (Note) -
Granted
status (Latency Note)
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Abstract
A method for determining a tilt angle of a vehicle includes measuring accelerations of a vehicle in directions along a longitudinal axis, a transverse axis, and a vertical axis of the vehicle. A current tilt angle of the vehicle is calculated as a function of the measured accelerations. A magnitude-compensated tilt angle is calculated as a function of the current tilt angle, of a preceding tilt angle, and of the magnitude of the vector sum of the measured accelerations. A gyroscopically stabilized magnitude-compensated tilt angle is calculated as a function of the current tilt angle, of a preceding tilt angle, of the magnitude of the vector sum of the measured accelerations, and of a change in the tilt angle over a given time period calculated from angular rate data provided by a gyroscope.
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