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:
Jun. 05, 2007
Filed:
Feb. 12, 2003
Motonori Tominaga, Anjo, JP;
Yukio Mori, Nagoya, JP;
Takeyasu Taguchi, Nagoya, JP;
Advics Co., Ltd., Aichi-pref., JP;
Nippon Soken, Inc., Nishio, JP;
Abstract
A straight running state is accurately determined using only wheel speed data in any running state. Based upon right and left wheel speed values calculated by a wheel speed calculating mechanism () from detection values of right and left wheel speed sensors (), a wheel speed ratio calculating mechanism (), a distance calculating mechanism (), and a distance ratio calculating mechanism () respectively calculate a right and left wheel speed ratio, an actual running distance, a linear distance, and a distance ratio of the two distances at every preset checkpoint (CP). A wheel speed ratio change amount evaluating mechanism () extracts CPs at times where a change amount of the wheel speed ratio is relatively small as effective CPs, and a determining mechanism () determines an effective CP with the smallest distance ratio from among the effective CPs as in a straight running state.