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:
Dec. 24, 1996
Filed:
Nov. 05, 1993
Yasuya Kajiwara, Himeji, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The computer (CPU) of a distance measurement device determines the inter-vehicular distance by applying a software filter (weighing means) upon successive values obtained directly from measurement. A vehicle velocity control device for maintaining the inter-vehicular distance include a distance measurement device for measuring the inter-vehicular distance, and the deviation .DELTA.R of the inter-vehicular distance with respect to the target inter-vehicle distance R.sub.S is determined. The vehicle velocity is controlled on the basis of the deviation .DELTA.R in accordance with the PID (proportion plus integral plus differential) control method, and the gains are varied in accordance with the current value of the inter-vehicular distance.