Electric power steering systems for vehicles with adjustable...

Details Electric power steering systems for vehicles with adjustable... Electric power steering systems for vehicles with adjustable...

2008-03-11

2010-10-12

Hurley, Kevin (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

Reexamination Certificate

active

07810606

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.

REFERENCES:
patent: 4481866 (1984-11-01), Matouka
patent: 2010/0059307 (2010-03-01), Ryu
patent: 1999-0011100 (1999-11-01), None

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