Abstract: A method for power saving in a steering system of a motor vehicle including a road wheel actuator acting on a rack to turn steerable road wheels and a controller configured or programmed to generate an operation signal for the road wheel actuator, wherein the controller includes a position controller to generate a motor torque request based on an actual and/or a measured position of the rack and a requested rack position, includes detecting a passive mode of the steering system by a passive mode detector of the controller if the motor vehicle is stopped and no steering input is provided, and if a passive mode is detected by the passive mode detector, setting the motor torque request to zero in order to save power.

Abstract: A motor vehicle power steering mechanism with an electric motor for steering assist and/or steering, and a steering controller, which controls the electric motor with a position control mode for autonomous driving and/or automatic steering and a torque control mode for manual steering by a driver. The steering controller includes a steering column reference controller, an arbitration unit, a column torque controller, a steering algorithm, and the steering system. The steering column reference controller calculates for position control based on a reference position and a measured position, and a first reference steering column torque. A steering algorithm calculates for torque control based on a measured column torque and a second reference steering column torque. The arbitration unit weights and adds the first and second reference steering column torques, and the output of the arbitration unit is input to the column torque controller.

Abstract: A method can be utilized to reduce the kinetosis effect in passengers of motor vehicles having an autonomous and/or semi-autonomous driving mode. By means of a display unit, an image generated from image data is displayed to at least one passenger in a display area of the display unit while the motor vehicle is moving. The method may involve estimating a future change in an acceleration of the motor vehicle and modifying the image data based on the estimated future change in acceleration by way of a correction algorithm such that an effect of a relative movement between the displayed image and the passenger is reduced.

Abstract: A motor vehicle power steering mechanism with an electric motor for steering assist and/or steering, and a steering controller, which controls the electric motor with a position control mode for autonomous driving and/or automatic steering and a torque control mode for manual steering by a driver. The steering controller includes a steering column reference controller, an arbitration unit, a column torque controller, a steering algorithm, and the steering system. The steering column reference controller calculates for position control based on a reference position and a measured position, and a first reference steering column torque. A steering algorithm calculates for torque control based on a measured column torque and a second reference steering column torque. The arbitration unit weights and adds the first and second reference steering column torques, and the output of the arbitration unit is input to the column torque controller.

Abstract: A method for operating an electromechanical steering system for a motor vehicle with variable chassis height, with a steering rack, which is driven by a servo motor through a recirculating ball screw drive, with a control unit, which receives input signals and generates output signals for driving the servo motor, the output signals being representative of an assist torque to be provided by the steering system, may be characterized in that, in operation, the control unit may receive or generate a chassis height signal that may indicate a current chassis height of the vehicle, and may limit the assist torque, on the basis of the chassis height signal, to an upper limit, wherein the upper limit may be decreased with an increase of the difference between the current chassis height and a mean chassis height.

Abstract: A method of calculating the offset of a yaw rate signal may be based at least in part on signals representing pinion angle, wheel speed, and yaw rate. These signals may be determined, and threshold comparisons may be performed, and determination of the yaw rate signal may be based at least in part on the results of the threshold comparisons.

Abstract: An electric power steering system may be controlled by superimposing a driver demand and a driver assistance device demand value to calculate a driver requested support value, in which a virtual driver support value may be calculated based on driver demand and a correction driver support value may be calculated based on a driver assistance device demand value, and the driver requested support value may be calculated as a combination of the virtual correction driver support value and the virtual driver support value.

Abstract: A method of calculating the offset of a yaw rate signal may be based at least in part on signals representing pinion angle, wheel speed, and yaw rate. These signals may be determined, and threshold comparisons may be performed, and determination of the yaw rate signal may be based at least in part on the results of the threshold comparisons.

Abstract: A method for operating an electromechanical steering system for a motor vehicle with variable chassis height, with a steering rack (4), which is driven by a servo motor (18) through a re-circulating ball screw drive, with a control unit (10), which receives input signals and generates output signals for driving the servo motor (18), the output signals being representative of an assist torque (T) to be provided by the steering system, is characterised in that in operation the control unit (10) is, receiving or generating a chassis height signal (X) indicative of the current chassis height of the vehicle, and limiting the assist torque (T) on the basis of the chassis height signal (X) to an upper limit, wherein the upper limit is decreased with an increase of the difference between the current chassis height and a mean chassis height.

Abstract: The invention refers to a steering device and a method for controlling a steering device with steering power support means for a motor vehicle with at least one steerable road wheel.

Abstract: An electric power steering system may be controlled by superimposing a driver demand and a driver assistance device demand value to calculate a driver requested support value, in which a virtual driver support value may be calculated based on driver demand and a correction driver support value may be calculated based on a driver assistance device demand value, and the driver requested support value may be calculated as a combination of the virtual correction driver support value and the virtual driver support value.

Abstract: The invention relates to a control method for a steering system having electric power assistance, comprising a control means, for example a steering wheel, which can be controlled by a driver, an electric power assist motor, an electric control unit, which contains a memory for storing digital data, a driver unit (motor controller), which determines electrical signals for controlling the power-assistance motor in accordance with a target engine torque that was transmitted to the driver unit and outputs said electrical signals to the power-assistance motor, at least one sensor device for determining a control variable, for example a manual torque, introduced into the control means, wherein a preset value for a engine torque of the power-assistance motor is determined in the control unit with the aid of the control variable, wherein in addition, an upper threshold value for the target engine torque is stored in a limiting element, and for a case A in which the preset value exceeds the upper threshold value, the

Abstract: A method for controlling a steering device with steering power support means for a motor vehicle with at least one steerable road wheel, where the steering device may include a steering shaft with a first end to adopt a steering wheel, a control device controlling said power support means, sensing means detecting steering shaft torque introduced in said steering shaft, and means to determine a hands-off situation in which the driver does not introduce a torque into said steering shaft, wherein the steering power support means support the driver on the basis of a driver demand introduced into the steering shaft, may comprise determining a steering wheel torque on basis of the steering shaft torque; determining a time derivative of the detected steering wheel torque; if the absolute value of the steering wheel torque is lower than a threshold torque limit and if the absolute value of the derivative of steering wheel torque is lower than a threshold derivative torque limit, a counter is increased by one count; i

Abstract: A method for controlling a steering device with steering power support means for a motor vehicle with at least one steerable road wheel, where the steering device may include a steering shaft with a first end to adopt a steering wheel, a control device controlling said power support means, sensing means detecting steering shaft torque introduced in said steering shaft, and means to determine a hands-off situation in which the driver does not introduce a torque into said steering shaft, wherein the steering power support means support the driver on the basis of a driver demand introduced into the steering shaft, may comprise determining a steering wheel torque on basis of the steering shaft torque; determining a time derivative of the detected steering wheel torque; if the absolute value of the steering wheel torque is lower than a threshold torque limit and if the absolute value of the derivative of steering wheel torque is lower than a threshold derivative torque limit, a counter is increased by one count; i

Abstract: The invention refers to a steering device and a method for controlling a steering device with steering power support means (7, 8, 9) for a motor vehicle with at least one steerable road wheel (4), the steering device comprising: a steering shaft (1) with a first end to adopt a steering wheel (2) and with a second end which is coupled to a pinion (6), wherein said pinion (6) is engaging in a rack (5), wherein said rack (5) is adjustable in its longitudinal direction to different positions, whereby said at least one road wheel (4) is turning, whereby in a middle position (R0) of said rack said road wheel (4) is turned as to steer the vehicle in a straight ahead direction; a control device (10) controlling said power support means (7, 8, 9), sensing means (11) detecting torque introduced in said steering shaft (4), sensing means detecting the speed (V) of the vehicle, means to determine said position (R) of the rack; and a device for determining the instantaneous rack load (FR) in its longitudinal direction,