Vehicular velocity controlling apparatus and method to follow up a preceding vehicle on curves

摘要

An inter-vehicle distance (L) and a relative velocity ( DELTA V) of the vehicle to a preceding vehicle are detected. The velocity (Vs) of the vehicle is also detected. A target value (V*s) of the vehicular velocity to make the inter-vehicle distance substantially equal to a target value (L*) is calculated on the basis of the detected inter-vehicle distance (L) and vehicular velocity (Vs). The vehicular velocity is controlled to make it substantially equal to the target velocity value (V*s). A turning magnitude, for example, lateral acceleration(YG) of the vehicle is detected. A correction coefficient ( DELTA YG) of the turning magnitude is calculated in accordance with the detected vehicular velocity (Vs). The target velocity value (V*s) is corrected on the basis of the turning magnitude correction coefficient ( DELTA YG) by which the detected turning magnitude (YG) is corrected.