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:
Jul. 20, 1993
Filed:
Aug. 27, 1991
Hideaki Fujioka, Itami, JP;
Toru Nakaura, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
An antilock brake control system with a learning and correction function includes a slippage detector for detecting a slip value representing the slipping of a tire to a road surface. The slip value is compared with a slip threshold, and a locking symptom signal is produced when the slip value exceeds the slip threshold. A brake pressure suppression starts when the locking symptom signal is produced. A slippage learning arrangement is provided for learning, during a learning period from the start of brake pressure suppression until the tire stabilizes, whether a maximum of the slip value during the learning period is within a predetermined range, is greater than the predetermined range, or is less than the predetermined range. The slip threshold is corrected such that when the maximum slip value is greater than the predetermined range, the slip threshold is decreased, and when the maximum slip value is less than the predetermined range, the slip threshold is increased.