Process for determining lateral overturning of vehicle, and system for detecting inclination angle of vehicle body
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United States of America Patent
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Aug 20, 2002
Grant Date -
N/A
app pub date -
Sep 6, 2000
filing date -
Sep 6, 1999
priority date (Note) -
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Abstract
A process for determining the lateral overturning of a vehicle, comprises the steps of: establishing a threshold value line on a two-dimensional map made using a rolling angle and a rolling angular speed of the vehicle as parameters; plotting a hysteresis line for an actual rolling angle and an actual rolling angular speed on the two-dimensional map; and determining that there is a possibility that the vehicle is overturning laterally or sideways when the hysteresis line traverses the threshold value line from a side nearer to an origin of the map to a side farther from the origin. The threshold value line is changed depending on at least one of a lateral acceleration of the vehicle, a lateral speed of the vehicle, a direction of change in steering angle of the vehicle, and a rolling angular acceleration of the vehicle.
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