Zf Automotive Germany Gmbh

Philipp Bergmann

Peter Hambloch

The disclosure relates to a steering wheel actuator unit for a steer-by-wire steering apparatus for a motor vehicle and having a steering axle, wherein a free end of the steering axle is designed for arranging a steering wheel and the steering axle is rotatably mounted about its longitudinal axle, the steering wheel actuator unit comprising at least one feedback device which acts on the steering axle to realize a predetermined torque and/or a predetermined damping, and a spindle device connected to the steering axle for providing end stops for the rotational movement of the steering axle. In order to be able to reduce and/or avoid incorrect operation in case of failure of the feedback device, the steering wheel actuator unit further comprising an eddy current device which generates a resistance for the rotation of the steering axle about its longitudinal axle.

Steer-by-wire steering apparatus and method for operating a steer-by-wire steering apparatus

A method for operating an electromechanically assisted steering system of a motor vehicle is described. The steering system has a steering arrangement and at least one electromechanical actuator. The at least one electromechanical actuator is coupled to the steering arrangement in a torque-transmitting manner. The method comprises the following steps: A control device for an electromechanically assisted steering system of a motor vehicle, an electromechanically assisted steering system, and a computer program are also described.

Method for operating an electromechanically assisted steering system

A steer-by-wire steering system for a vehicle is provided that includes a steering wheel actuator for moving and detecting movements of a steering wheel of the vehicle. The steering wheel actuator includes a steering wheel electric motor. The steer-by-wire steering system further includes an axle actuator for moving and detecting movements of wheels of an axle of the vehicle. The axle actuator includes an axle electric motor and an axle control unit. The steer-by-wire steering system an equivalent circuit, which measures a current induced by the steering wheel electric motor and provides the axle control unit with at least one measurement value depending on the induced current for controlling the axle electric motor.

Steer-by-wire steering system and method for operating a steer-by-wire steering system

An all-wheel steering system for a motor vehicle is described which has an active front axle steering system and an active rear axle steering system. The front axle steering system includes a gear ratio unit which is coupled to a steering wheel. The gear ratio unit is configured to define a front axle steering angle as a function of a steering wheel angle and a front axle steering ratio. In addition, the gear ratio unit is coupled to the rear axle steering system in such a way that the front axle steering ratio is adjustable as a function of a rear axle steering angle. Further, a motor vehicle having such an all-wheel steering system is discussed. Also presented is a method of operating an all-wheel steering system for a motor vehicle.

All-wheel steering system for a motor vehicle, motor vehicle, and method of operating an all-wheel steering system

A method is proposed for operating a steering system of a motor vehicle, in particular an electromechanically supported steering system. First, at least one first virtual magnet and one second virtual magnet are provided in the steering system of the motor vehicle. A virtual magnetic force exerted on each other by the multiple virtual magnets is determined. A setpoint force that is to be applied to a lower part of the steering system is estimated and an auxiliary force with which a servo motor of the steering system acts on the lower part of the steering system is determined from the specified virtual magnetic force and the estimated setpoint force.

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Rheine, Germany

Philipp Bergmann