Method and apparatus for predicting vehicle rollover during...

Details Method and apparatus for predicting vehicle rollover during... Method and apparatus for predicting vehicle rollover during...

2009-04-24

2011-12-06

Nguyen, Kim T (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

Reexamination Certificate

active

08073597

ABSTRACT:
A vehicle includes wheels, force sensors adapted for a vertical force and lateral force of each wheel, an onboard device, and a controller. The controller calculates vehicle values using the vertical force and lateral force, compares the values to a corresponding threshold, and automatically deploys the device when each element value does not exceed a corresponding threshold. A method for determining when to deploy an airbag includes measuring a vertical and lateral force at each wheel, and measuring a yaw rate and roll angle. A lateral velocity is calculated using the lateral force, and a lift of each wheel is calculated using the vertical force. The roll angle, roll rate, and stopping time are processed to generate a point on a 3D rollover plane. A rollover energy rate is calculated, and the airbag deploys when the point, rollover energy rate, and lift do not exceed a threshold.

REFERENCES:
patent: 6889146 (2005-05-01), Sullivan et al.
patent: 7120528 (2006-10-01), Salib et al.

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