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:
May. 09, 1989
Filed:
Jun. 27, 1988
Applicant:
Inventors:
Scott S Kimbrough, Warren, MI (US);
Rao M Chalasani, Troy, MI (US);
Steven J Hallman, Saginaw, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
180 791 ; 180140 ; 180142 ; 36442405 ;
Abstract
The driver steering inputs of a closed-loop reference model rear vehicle steering system are measured and subjected to a filter function that delays application of the measured input to the reference model. Externally generated steering inputs appearing in the parameters measured for closed-loop control are subjected to a different filter function which imparts only minimal delay of the signal transmission. As a result, the rear steer control responds at a first, relatively slow rate to driver steering inputs, and a second, relatively fast rate to externally generated disturbances.