Safety system and method for a vehicle
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United States of America Patent
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Jan 1, 2013
Grant Date -
Jan 13, 2011
app pub date -
Jul 8, 2009
filing date -
Jul 8, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method for activating a safety system when a vehicle may be involved in a spin, roll, and/or a spin-to-roll condition. The system and method include determining a side slip angle of the vehicle using the arctangent of the ratio of a lateral and longitudinal velocity. The system and method also include receiving a roll rate signal and determining a roll angle using the roll rate signal. The system and method also include determining a roll warning threshold that is a function of a relationship between the roll rate signal and the roll angle. Lastly, the system and method include activating the safety system when a side slip angle threshold and/or the roll warning threshold are exceeded.
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