Patent ID: 6755276
Filing Date: 2004-06-29
Classification: B62D,G01D

Abstract:
A power-assisted steering system for a non-trackborne vehicle having wheels, said system comprising:a steering-control operated by a driver; a wheel-angle positioner to steer the wheels; a steering-control angle-sensor to provide a determination of the angle to which the steering-control is turned; at least one wheel-angle sensor to sense the position of the wheels; a feel provider to generate a feel torque to simulate a feedback of force to the steering control, the feel provider having an electric motor; a feel provider control-unit for controlling the feel provider; and, at least one steering control-unit, responsive to the determination of the angle to which the steering control is turned as provided by the steering-control angle-sensor, for controlling the wheel-angle positioner; and, wherein, in the event of failure of the steering-control angle-sensor, the determination of the angle to which the steering-control is turned is then continuously obtained solely from a voltage induced in the feel provider electric motor by turning the steering-control manually, and said determination of steering-control angle obtained from the feel-provider electric motor is used by said at least one steering control-unit to control the wheel-angle positioner.