Abstract: A motor vehicle and method for operating the same comprises two front wheels with front wheel steering, two rear wheels with rear wheel steering, and a driving stability device with a controller. The driving stability device, in particular the controller, is designed to synchronize the front wheel steering and the rear wheel steering such that the front wheel steering and rear wheel steering are involved independently of one another in controlling the driving stability.

Abstract: A method for controlling a motor vehicle having a steer-by-wire steering system with front-axle steering unit and rear-axle steering unit in the event of a fault being detected in the front-axle steering unit, comprises vehicle signals relating to a steering input, a position of a steering rack of the front-axle steering unit and a yaw rate of the motor vehicle being detected, the detected vehicle signals being made available to a control unit, the control unit, in order to implement the steering input, generating a first control signal for controlling a steering adjuster of the rear-axle steering unit, wherein the first control signal is generated taking into consideration the steering input, the position of the steering rack of the front-axle steering unit and the yaw rate, and controlling the steering adjuster of the rear-axle steering unit by the generated first control signal.

Abstract: A method for controlling a steer-by-wire steering system for a motor vehicle having steerable front and rear wheels in emergency steering operation comprises checking the steering system for the presence of a fault state and performing the emergency steering operation to maintain original driving behaviour if a fault state is detected, including: determining a target lateral acceleration on the basis of a current steering wheel position and a current vehicle speed, determining a yaw moment and, from the yaw moment, a general wheel steering angle for the original driving behaviour, where the general wheel steering angle is equal to a difference between a front wheel steering angle and a rear wheel steering angle, determining a front wheel steering angle correction and a rear wheel steering angle correction, and determining drive torques and/or braking torques for the front wheels and the rear wheels, which are distributed appropriately by the torque vectoring system.

Abstract: The present disclosure relates to a method for operating an operating system (1.1, 1.2, 1.3) of a motor vehicle, in which a control command (M1) for controlling the motor vehicle is specified via a control element (3.1, 3.2, 3.3), the control command (M1) specified via the control element (3.1, 3.2, 3.3) is sensorially acquired and passed on from an electronic control unit (4) to an electromechanical actuator unit (5.1, 5.2, 5.3) as a control signal, wherein the actuator unit (5.1, 5.2, 5.3) implements the control command (M1) according to the control signal. The operating system (1.1, 1.2, 1.3) is monitored here for an occurrence of a deviation from a target behaviour of the actuator unit (5.1, 5.2, 5.3), wherein tactile feedback is applied to the control element (3.1, 3.2, 3.3) if a deviation is detected.

Abstract: A method for operating a motor vehicle with a steer-by-wire steering system and a driving dynamics control system comprises converting, by the steer-by-wire steering system, a steering specification into a wheel steering angle of steerable wheels of the motor vehicle, and wherein the driving dynamics control system, taking into account a driving direction specification and a driving state of the motor vehicle, carries out an evaluation with respect to a critical driving situation and, if a critical driving situation is detected, stabilizes the motor vehicle by targeted control of at least one brake of the motor vehicle and/or at least one drive unit of the motor vehicle in order to rectify the critical driving situation, wherein, in addition to the driving dynamics control system, a driving state evaluation unit carries out an evaluation with respect to a critical driving situation and, if a critical driving situation is detected by the driving state evaluation unit, the wheel steering angle is changed in ord

Abstract: A method for braking a motor vehicle including a vehicle motion control system and a braking system with electromechanical brake actuators, wherein each wheel of the motor vehicle is assigned one of the electromechanical brake actuators, comprises the vehicle motion control system receiving a driving direction input comprising a deceleration input, an actual vehicle speed, and an actual wheel rotational speed for each wheel of the motor vehicle, the vehicle motion control system determining a reference driving line for the motor vehicle on the basis of the received driving direction input and the received actual vehicle speed, the vehicle motion control system determining a desired wheel rotational speed which is required to comply with the reference driving line and to implement the deceleration input, and the vehicle motion control system activating the brake actuators, taking into consideration the respectively received actual wheel rotational speed, in such a way that the actual wheel rotational speed is

Abstract: A method for controlling wheel slip of a motor vehicle having at least two wheels, an electromechanical braking system, an electric drive system, and a steer-by-wire steering system comprises: converting a target trajectory of the motor vehicle into a target movement of the motor vehicle; determining wheel-specific target longitudinal and target transverse slip values for the wheels based on the target movement using a vehicle and tyre model; and adjusting actual longitudinal and actual transverse slip values of the wheels to the respective target longitudinal and target transverse slip values by the electromechanical brake system and the electric drive system as a function of a steering angle of the steer-by-wire steering system. A motor vehicle may include a control unit designed to carry out such a method.

Abstract: A method can be used to control a steer-by-wire steering system in an emergency steering mode. The method comprises checking a steering system for the presence of a fault state and upon detection of a fault implementing the emergency steering mode, which involves determining a setpoint position of a steering tie rod using a setpoint wheel steering angle, determining a front wheel to be braked and a brake pressure to attain the setpoint position with a control unit, transmitting the front wheel to be braked and the brake pressure to a brake system, braking the front wheel to be braked, and increasing a torque provided by a wheel drive to compensate for a loss of speed of the motor vehicle caused by the braking of the front wheel to be braked.

Abstract: A method for controlling a steer-by-wire steering system for a motor vehicle having steerable front and rear wheels in emergency steering operation comprises checking the steering system for the presence of a fault state and performing the emergency steering operation to maintain original driving behaviour if a fault state is detected, including: determining a target lateral acceleration on the basis of a current steering wheel position and a current vehicle speed, determining a yaw moment and, from the yaw moment, a general wheel steering angle for the original driving behaviour, where the general wheel steering angle is equal to a difference between a front wheel steering angle and a rear wheel steering angle, determining a front wheel steering angle correction and a rear wheel steering angle correction, and determining drive torques and/or braking torques for the front wheels and the rear wheels, which are distributed appropriately by the torque vectoring system.

Abstract: A vehicle may have actuators, including a drive device with a drive motor that can act on a drive wheel, a brake device with a brake that can act on a drive wheel, and/or a steering device with a steering sensor by way of which the steering angle of a wheel is adjustable, a vehicle movement controller, and a setpoint value input means, a setpoint value processing means for detecting setpoint value settings of the setpoint value input means, to calculate a yaw acceleration setpoint value and translational acceleration setpoint values from the setpoint value settings. The setpoint value processing means may be configured to transfer the calculated yaw acceleration setpoint value and translational acceleration setpoint values to the vehicle movement controller, which is configured to actuate one or more of the actuators such that the yaw acceleration setpoint value and the translational acceleration setpoint values are reached.

Abstract: A motor vehicle and method for operating the same comprises two front wheels with front wheel steering, two rear wheels with rear wheel steering, and a driving stability device with a controller. The driving stability device, in particular the controller, is designed to synchronize the front wheel steering and the rear wheel steering such that the front wheel steering and rear wheel steering are involved independently of one another in controlling the driving stability.

Abstract: A system containing a reference trajectory device, a cost function device, a dynamic model device, a summing device, a controller, a brake actuator device, a drive actuator device, a steering actuator device, a multiplexer and a vehicle, in particular a motor vehicle, wherein the system, in particular the controller, is set up to execute a control algorithm which manages all actuators, in particular the brake actuator device, the drive actuator device and/or the steering actuator device, in order to achieve optimum performance, efficiency and stability.

Abstract: A method may be utilized to control a steer-by-wire steering system for a motor vehicle that includes an electronically controllable steering actuator that acts on steered wheels, a control unit, a feedback actuator to which a driver's request for a steering angle can be applied by a driver via steering input means and which outputs a feedback signal to the steering input means as a reaction to the driver's request and a driving condition of the motor vehicle, and a signal transmission that transmits the driver's request to the control unit. The control unit controls the steering actuator to convert the driver's request into deflection of the steered wheels. The method may involve determining wheel slip of a front wheel, performing frequency analysis of a profile over time of a wheel slip signal of the front wheel, and determining the feedback signal based on the result of the frequency analysis.

Abstract: The present disclosure relates to a method for operating an operating system (1.1, 1.2, 1.3) of a motor vehicle, in which a control command (M1) for controlling the motor vehicle is specified via a control element (3.1, 3.2, 3.3), the control command (M1) specified via the control element (3.1, 3.2, 3.3) is sensorially acquired and passed on from an electronic control unit (4) to an electromechanical actuator unit (5.1, 5.2, 5.3) as a control signal, wherein the actuator unit (5.1, 5.2, 5.3) implements the control command (M1) according to the control signal. The operating system (1.1, 1.2, 1.3) is monitored here for an occurrence of a deviation from a target behaviour of the actuator unit (5.1, 5.2, 5.3), wherein tactile feedback is applied to the control element (3.1, 3.2, 3.3) if a deviation is detected.

Abstract: A method of operating a steer-by-wire steering system of a motor vehicle to convert a steering command into a steering movement of steerable wheels of a motor vehicle is disclosed. The method includes sending a control signal to an electric motor of a steering actuator and converting the received control signal into a mechanical movement of the steering actuator by the electric motor, wherein the steering actuator acts on a coupling element, and wherein the electric motor is operated in a generator mode.

Abstract: A method can be used to control a steer-by-wire steering system for a motor vehicle that has two axles each with two wheels. Two front wheels can be steered by front-wheel steering and two rear wheels can be steered by rear-wheel steering. The motor vehicle includes a single wheel drive that is assigned to one of the two axles and drives the two wheels of the corresponding axle via a differential. The motor vehicle comprises an inboard braking system. The method involves checking the motor vehicle speed and activating rear-axle steering when a motor vehicle speed should be slower than 40 km/hr. With rear-axle steering active, the following steps are performed: deactivating front-wheel steering and rear-wheel steering, determining a reference position of a first steering rod via a reference wheel steering angle, determining a differential drive torque between the rear wheels to reach the reference position via a control unit.

Abstract: A method can be used to control a steer-by-wire steering system for a motor vehicle that has two axles each with two wheels. Two front wheels can be steered by front-wheel steering and two rear wheels can be steered by rear-wheel steering. The motor vehicle includes a single wheel drive that is assigned to one of the two axles and drives the two wheels of the corresponding axle via a differential. The motor vehicle comprises an inboard braking system. The method involves checking the motor vehicle speed and activating rear-axle steering when a motor vehicle speed should be slower than 40 km/hr. With rear-axle steering active, the following steps are performed: deactivating front-wheel steering and rear-wheel steering, determining a reference position of a first steering rod via a reference wheel steering angle, determining a differential drive torque between the rear wheels to reach the reference position via a control unit.

Abstract: A vehicle may have actuators, including a drive device with a drive motor that can act on a drive wheel, a brake device with a brake that can act on a drive wheel, and/or a steering device with a steering sensor by way of which the steering angle of a wheel is adjustable, a vehicle movement controller, and a setpoint value input means, a setpoint value processing means for detecting setpoint value settings of the setpoint value input means, to calculate a yaw acceleration setpoint value and translational acceleration setpoint values from the setpoint value settings. The setpoint value processing means may be configured to transfer the calculated yaw acceleration setpoint value and translational acceleration setpoint values to the vehicle movement controller, which is configured to actuate one or more of the actuators such that the yaw acceleration setpoint value and the translational acceleration setpoint values are reached.

Abstract: A method can be used to control a steer-by-wire steering system in an emergency steering mode. The method comprises checking a steering system for the presence of a fault state and upon detection of a fault implementing the emergency steering mode, which involves determining a setpoint position of a steering tie rod using a setpoint wheel steering angle, determining a front wheel to be braked and a brake pressure to attain the setpoint position with a control unit, transmitting the front wheel to be braked and the brake pressure to a brake system, braking the front wheel to be braked, and increasing a torque provided by a wheel drive to compensate for a loss of speed of the motor vehicle caused by the braking of the front wheel to be braked.

Abstract: A steer-by-wire steering system for a motor vehicle with a steerable front wheel axle that has two steerable wheels. The front wheel axle includes a single wheel drive which, by means of a drive controller, individually drives wheel drives which are associated with the steerable wheels. The drive controller has a controller which determines a target speed for the left-hand wheel and a target speed for the right-hand wheel in accordance with an accelerator pedal angle and a rotational angle of a steering shaft, and which limits the target speeds to a slip-limited speed. The drive controller individually drives the wheel drives in such a way that the difference between the target speed and the actual speed for each steerable wheel is minimal.