Additional fall-back level in the case of failure of angle sensors for 'steer-by-wire' systems without mechanical/hydraulical fall-back connection and procedure for determining the angle of rotation of the steering wheel of a power steering

摘要

The angle to which the steering control is turned continuously, is determined from voltage which is induced in the winding of the electric motor by turning the steering control manually and/from the induced current, when any one of the angle sensor, control unit feel provider is in failure conditions.