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.

Date of Patent:
Feb. 11, 1992

Filed:

Jan. 17, 1990
Applicant:
Inventors:

Toshiro Matsuda, Kanagawa, JP;

Kazuo Chiba, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
36442405 ; 36442602 ; 180140 ; 280 91 ;
Abstract

A control system for a four wheel steering system detects the occurrence of wheel slippage for sampling wheel speed data immediately before the occurrence of wheel slippage. The control system projects a vehicle speed on the basis of the sampled wheel speed data and a predetermined variation rate of the vehicle speed, and derives toe angle variation magnitude of a subsidiary steerable wheel on the basis of the projected vehicle speed and a steering angle of a primary steerable wheel.


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