Patent ID: 7100733
Filing Date: 2006-09-05
Classification: B62D

Abstract:
1. A steer-by-wire system comprising: a steering wheel angle sensor adapted to detect an angular displacement of a steering wheel; a torque feedback actuator adapted to generate feedback torque in the steering wheel; and a controller receiving a road wheel angle, and further cooperating with said steering wheel angle sensor to determine a steering wheel angle; whereby said controller corrects the position of the steering wheel relative to the road wheel angle by calculating a corrected steering wheel angle relative to the at least one road wheel and directs said torque feedback actuator to rotate said steering wheel to the corrected steering wheel angle; whereby said controller calculates a minimum angular displacement through which the steering wheel may be rotated to the corrected steering wheel angle; and wherein the steering wheel angle sensor includes a incremental angular sensor adapted to determine an angular position of the steering wheel relative to an initial steering wheel angle position wherein the controller is adapted to detect a negative torque that impedes the rotation of said steering wheel and issues a warning signal in response to the negative torque.