Patent ID: 6915200
Filing Date: 2005-07-05
Classification: B60T,B60W,G01P

Abstract:
1. An abnormality determining device for a longitudinal acceleration sensor for a vehicle comprising: a first acceleration estimating unit for estimating a vehicle acceleration based on a wheel speed; a second acceleration estimating unit for estimating another vehicle acceleration based on the throttle angle of an engine; a determination-permission deciding unit for setting a determination-permission region based on the estimated values of the first and second acceleration estimating unit so as to output a determination-permission signal when a deviation between the vehicle acceleration estimated by the first acceleration estimating unit and the vehicle acceleration estimated by the second acceleration estimating unit is within a predetermined value; and a determining unit for setting an abnormality determining region based on the vehicle acceleration estimated by the second acceleration estimating unit and for determining that the longitudinal acceleration sensor is abnormal, if the output value of the longitudinal acceleration sensor exists in the abnormality determining region for a predetermined time or longer in a state that the determination-permission deciding unit outputs a determination-permission signal.