Steer-by-wire system for motor vehicle has valve actuator in rack-and-pinion steering gear connected to control circuits comparing actual and desired steering positions

摘要

The steering wheel (1) has a short steering column (3) connected to an electric motor (9) with first and second angle sensors (5,7). A steering wheel regulator (63) is connected to the motor via a static frequency converter (65). The angle sensors are connected to a desired angle calculator (39) which in turn as connected to a steering regulator (37). The regulator is connected to the valve actuator (21) for the steering rack-and-pinion (17,19) via a static frequency converter (35). The hydraulic steering mechanism is powered by a pump (25).