Patent ID: 6415217
Filing Date: 2002-07-02
Classification: B60K,B60W,G05D

Abstract:
A vehicular velocity controlling apparatus for an automotive vehicle, comprising:an inter-vehicle distance detector to detect an inter-vehicle distance from the vehicle to a preceding vehicle which is running ahead of the vehicle; a vehicular velocity detector to detect a vehicular velocity of the vehicle; a relative velocity detector to detect a relative velocity of the vehicle to the preceding vehicle; a target inter-vehicle distance calculating section that calculates a target inter-vehicle distance on the basis of detected values of the inter-vehicle distance and of the vehicular velocity; a control response characteristic determining section that determines a control response characteristic of an inter-vehicle distance system to the target inter-vehicle distance; an inter-vehicle distance command value calculating section that calculates an inter-vehicle distance command value based on the target inter-vehicle distance in accordance with the determined control response characteristic; a target vehicular velocity calculating section that calculates a target vehicular velocity on the basis of the inter-vehicle distance command value; and a vehicular velocity controlling section that controls the vehicular velocity to make the detected value of the vehicular velocity substantially equal to the target vehicular velocity, the control response characteristic determining section determining the control response characteristic in accordance with a correlation in magnitude based on the target inter-vehicle distance, the inter-vehicle distance command value, and the detected value of the inter-vehicle distance.