Abstract: A method for operating a steer-by-wire steering system of a motor vehicle is proposed. The steer-by-wire steering system includes a steering wheel, a force feedback actuator coupled to the steering wheel, a steering actuator coupled to a steerable wheel, and a control system. The method includes a) the determination of steering information while taking into account a steering wheel angle and/or a driver's steering torque applied to the steering wheel by the driver; b) controlling the steering actuator while taking into account the steering information to adjust a desired wheel steering angle of the steerable wheel; c) controlling the force feedback actuator for setting a steering wheel torque; and d) providing a threshold value associated with steering wheel torque and/or the wheel steering torque; e) generating a torque value representing or reproducing the steering wheel torque and/or the wheel steering torque; and f) outputting an overshoot signal if the torque value reaches the threshold value.

Abstract: The invention relates to a method for detecting a driver's hands on a steering wheel of a vehicle. In one step, a steering system is excited to vibrate. The oscillations of the steering system are determined in a steering wheel remote area. The oscillations of a steering wheel near area of the steering system of the vehicle are determined. In a further step, the determined oscillations of the steering wheel near area are compared with stored characteristic oscillations of the steering wheel near area, which occur during the same excitation in a state in which the steering wheel is not touched.

Abstract: A method for operating a steer-by-wire steering system of a motor vehicle is proposed. The steer-by-wire steering system includes a steering wheel, a force feedback actuator coupled to the steering wheel, a steering actuator coupled to a steerable wheel, and a control system. The method includes a) the determination of steering information while taking into account a steering wheel angle and/or a driver's steering torque applied to the steering wheel by the driver; b) controlling the steering actuator while taking into account the steering information to adjust a desired wheel steering angle of the steerable wheel; c) controlling the force feedback actuator for setting a steering wheel torque; and d) providing a threshold value associated with steering wheel torque and/or the wheel steering torque; e) generating a torque value representing or reproducing the steering wheel torque and/or the wheel steering torque; and f) outputting an overshoot signal if the torque value reaches the threshold value.

Abstract: A steering device for a motor vehicle is described, the steering device comprising a steering element for steering the motor vehicle, and an actuating element by means of which wheels of the motor vehicle are adjusted as a function of an actuation of the steering element. The steering element has a steering assist unit associated with it, in particular an electronic steering assist unit for active return of the steering element, the steering assist unit comprising a motor and an open- and closed-loop control unit which drives the motor for generating an assist torque. The open- and closed-loop control unit receives data from a first sensor which directly senses the position of the actuating element, and drives the motor as a function of the position of the actuating element. Further described is a method of controlling a steering device.

Abstract: A steering device for a motor vehicle is described, the steering device comprising a steering element for steering the motor vehicle, and an actuating element by means of which wheels of the motor vehicle are adjusted as a function of an actuation of the steering element. The steering element has a steering assist unit associated with it, in particular an electronic steering assist unit for active return of the steering element, the steering assist unit comprising a motor and an open- and closed-loop control unit which drives the motor for generating an assist torque. The open- and closed-loop control unit receives data from a first sensor which directly senses the position of the actuating element, and drives the motor as a function of the position of the actuating element. Further described is a method of controlling a steering device.

Abstract: A method of controlling disturbances associated with electric power steering (EPS) systems maintains an original assist torque to feedback signal in the EPS, such as a column torque, and further minimizes the impact from the disturbance source to the feedback signal so that the disturbance is rejected while the original steering feel is maintained. The method further considers interaction of the rejection feature with other functions of the EPS. In one embodiment, relationships for isolating the disturbance are achieved by utilizing a combined feedback and feed-forward compensator.

Abstract: A method of controlling disturbances associated with electric power steering (EPS) systems maintains an original assist torque to feedback signal in the EPS, such as a column torque, and further minimizes the impact from the disturbance source to the feedback signal so that the disturbance is rejected while the original steering feel is maintained. The method further considers interaction of the rejection feature with other functions of the EPS. In one embodiment, relationships for isolating the disturbance are achieved by utilizing a combined feedback and feed-forward compensator.

Abstract: A method of controlling an electric motor of a power steering system having at least three windings is described, wherein a control unit applies a current to the windings of the electric motor to generate a total torque having a value which is ascertained by the control unit from a set-point torque for steering assistance and a set-point torque for damping. A damping set-point circuit ascertains the set-point torque for damping and a steering assist set-point circuit ascertains the set-point torque for steering assistance. A monitoring circuit monitors the function of the windings of the electric motor. In the event of a malfunction of any of the windings, the monitoring circuit outputs an error signal, upon which the set-point torque for steering assistance is reduced.

Abstract: A method of controlling an electric motor of a power steering system having at least three windings is described, wherein a control unit applies a current to the windings of the electric motor to generate a total torque having a value which is ascertained by the control unit from a set-point torque for steering assistance and a set-point torque for damping. A damping set-point circuit ascertains the set-point torque for damping and a steering assist set-point circuit ascertains the set-point torque for steering assistance. A monitoring circuit monitors the function of the windings of the electric motor. In the event of a malfunction of any of the windings, the monitoring circuit outputs an error signal, upon which the set-point torque for steering assistance is reduced.

Abstract: The invention relates to an active chassis stabilization system including a hydraulic actuator, a pump for acting upon the actuator with a hydraulic pressure, a reservoir for receiving hydraulic fluid, and a return line for a fluid flow from the actuator to the reservoir. Provided in the return line is a check valve which blocks the fluid flow from the reservoir to the actuator and allows the fluid flow from the actuator to the reservoir as of a predeterminable return pressure.