Determining critical angle of motor vehicle leading to rollover

摘要

The angle determination method involves measuring (DSx,DSy) the rotation rate of the vehicle about its longitudinal and/or transverse axis, integrating (IT) the measured rate to derive the roll angle about the longitudinal vehicle axis and/or the pitch angle about the transverse vehicle axis to enable critical angle detection using threshold evaluation. Each rotation rate is only integrated if it exceeds a lower threshold and lies below a higher threshold, whereby the thres holds are defined depending on an offset error of each rotation rate sensor. The integration is interrupted and restarted after a predefinable rest period.