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:
Apr. 02, 2002
Filed:
Mar. 15, 2000
Kensuke Fukuyama, Tokyo, JP;
Nissan Motor Co., Ltd., Kanagawa, JP;
Abstract
A yaw rate estimating apparatus is provided to estimate a yaw rate more accurately even if a vehicle is in a turn. A gain correction k for precluding an error in an estimated yaw rate due to tire deformation during a turn is predetermined for a lateral acceleration based on corresponding vehicle data. The gain correction k is provided in a gain correction characteristic map, in which the gain correction k is set to decrease as the lateral acceleration increases. The corresponding gain correction k is obtained from the gain correction characteristic map based on the detected lateral acceleration Y while the vehicle is in a non-controlled state. The estimated yaw rate is obtained by multiplying a yaw rate, which is estimated based on a wheel speed difference between left and right non-driving wheels and a tread, by the gain correction.