Vehicle rollover detection and mitigation using rollover index
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United States of America Patent
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Sep 12, 2006
Grant Date -
Mar 20, 2003
app pub date -
Aug 27, 2002
filing date -
Aug 29, 2001
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Abstract
A method and apparatus for determining likelihood of rollover of a vehicle and/or mitigating rollover of the vehicle is responsive to measured vehicle lateral acceleration and a measured one of vehicle roll rate and vehicle suspension displacements to derive estimates of roll angle and roll rate. First, preliminary, estimates of roll angle and roll rate are derived and used as pseudo-measurements in a dynamic, closed loop observer equation which represents a model of the vehicle in a first roll mode for roll angles small compared to a reference value indicating two wheel lift-off and a second roll mode for roll angles at least near a reference value indicating two wheel lift-off. The observer equation has parameters and gains with values for each mode stored as a function of roll angle index derived from measurements and pseudo-measured values. The observer equation produces second, improved values or roll angle and roll rate together indicating the likelihood of vehicle rollover. Rollover mitigating controls for brakes, active front steer, and/or active rear steer are also disclosed.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- BWI COMPANY LIMITED S.A.;DELPHI TECHNOLOGIES, INC.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Barta, David John | Beauercreek, OH | 12 | 267 |
Hac, Aleksander Boguslaw | Dayton, OH | 11 | 547 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
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