Adaptive airbag inflation method and apparatus

Details Adaptive airbag inflation method and apparatus Adaptive airbag inflation method and apparatus

1997-11-04

1999-12-07

Hurley, Kevin

Land vehicles

Wheeled

Attachment

B60R 2132

Patent

active

059970332

ABSTRACT:
The airbag system includes in addition to conventional crash sensing apparatus seat sensors to gauge occupant mass, an occupant position sensor and a vehicle speed sensor. Desired initial restraining force is calculated from speed at impact and the occupant's mass, and an appropriate degree of inflation is effected. The occupant speed is continuously calculated from the position sensor signal and the vehicle speed. A target speed profile is established based on an estimated restraint period and the vehicle speed, and an airbag vent is varied to control the occupant speed to the target speed. The target speed profile is adjusted as a function of passenger compartment acceleration to account for vehicle speed variations and for vehicle crush.

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patent: 5868423 (1999-02-01), Takimoto et al.

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