Patent ID: 8862333

Claim:
A method of determining a lateral velocity during abnormal driving situations of a vehicle, such as during a controlled vehicles crash test, from a lateral acceleration signal, the method comprising: detecting an abnormal driving situation by at least one of the following events; a) vehicle speed information delivered from CAN is lower than a predescribed value, b) number of revolutions of an engine is lower than a predescribed value or the engine is off, c) number of revolutions of vehicle wheels are lower than a predescribed value, d) transmission gear is consistent with a prescribed test set-up, e) a parking brake is engaged, and f) vehicle travel distance during a current key cycle is lower than a predescribed value; calculating an initial zero-g-point value from the lateral acceleration signal if an abnormal driving situation is detected; detecting a lateral acceleration signal over a minimum threshold and start an integration of the lateral acceleration signal and compare an average value calculated from the integrated lateral acceleration signal with the calculated initial zero-g-point value; and if the average value differs from the calculated initial zero-g-point value by more than a predefined threshold use the actual integrated lateral acceleration signal as valid lateral velocity and continue the integration until a predefined stopping condition has been reached.