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:
Oct. 12, 2010
Filed:
Mar. 11, 2008
Richard W. Topping, Ann Arbor, MI (US);
Richard W. Topping, Ann Arbor, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
An electric power steering system for a vehicle includes a torsion bar, a controller, and an electric motor. The controller is coupled to the torsion bar, and is configured to at least facilitate adjusting the stiffness of the torsion bar based at least in part on a parameter pertaining to operation of the vehicle and generating a steering assist signal based at least in part on a deflection or a strain of the torsion bar or a torque carried by the torsion bar. The electric motor is coupled to the controller, and is configured to receive the steering assist signal therefrom and to at least facilitate implementing the steering assist signal.