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:
Aug. 14, 1990
Filed:
Sep. 16, 1988
Nissan Motor Company, Limited, Yokohama, JP;
Abstract
A system for controlling the steering angle of the rear steerable wheels of a vehicle senses the front wheel steering angle, the vehicle speed and a manually selected mode signal for a new mode of two driving modes. A microcomputer containing models for the two modes determines a target yaw rate for the selected mode from which is calculated a target rear wheel steering angle to control rear wheel steering. However, the system is prevented from calculating a steering angle for the new mode when it would cause an unsafe abrupt change in vehicle behavior as when the rear wheel steering angle is not nearly zero which is equivalent to the sensed front steering angle, the target yaw rate and the lateral acceleration all being nearly zero.