Method and apparatus for controlling an actuatable...

Details Method and apparatus for controlling an actuatable... Method and apparatus for controlling an actuatable...

B - Operations, Transporting

60

R

B60R 21/01 (2006.01)

Patent

CA 2138742

An apparatus (30) for controlling an actuatable restraining device includes an accelerometer (60) for providing an electrical deceleration signal having a characteristic indicative of vehicle deceleration. An electronic controller (64) is connected to the accelerometer (60) and determines an average crash acceleration (AWIN) value in response to deceleration during a vehicle crash condition. The controller (64) determines a crash velocity value and a variably weighted velocity value (JMM2) equal to crash velocity times a variable weighting factor. The controller (64) provides an actuation signal to actuate the actuatable restraining device (i) when the average velocity value (AWIN) is greater than a first threshold value (WTHRESH) or (ii) when the variably weighted velocity value (JNM2) is greater than a second threshold value (JTHRESH) and the crash velocity is greater than a third threshold value (VTHRESH).

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