The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2002
Filed:
Nov. 16, 2001
Nissan Motor Co., Ltd., Kanwgawa, JP;
Abstract
In an automatic vehicular velocity control apparatus for an automotive vehicle, a relative velocity detector is provided to detect a relative velocity of a preceding vehicle to the vehicle, an inter-vehicle distance command value calculator is provided to calculate an inter-vehicle distance command value, a control response characteristic determinator is provided to determine a control response characteristic of the inter-vehicle distance control system according to a deviation from the inter-vehicle distance command value to a detected value of the inter-vehicle distance and a detected value of the relative velocity, a vehicular velocity command value calculator is provided to calculate a vehicular velocity command value on the basis of the determined control response characteristic of the inter-vehicle distance control system, and a vehicular velocity control section is provided to control at least one of a driving force of the vehicle, a braking force of the vehicle, and a gear ratio of a transmission in such a manner that a detected value of the vehicular velocity is made coincident with the vehicular velocity command value. The control response characteristic determinator includes maps representing a relationships of a specific angular frequency &ohgr; (or &ohgr;c) with respect to the relative velocity &Dgr;V and an inter-vehicle distance deviation &Dgr;L and a damping factor &zgr;M (or &zgr;c) with respect to the relative velocity and the inter-vehicle distance deviation.