Abstract: A vehicle control method includes early detection of an unstable driving state of a vehicle at least using an actual variable and a setpoint trajectory; wherein it is ascertained during early detection whether the unstable driving state is understeering of the vehicle or oversteering of the vehicle; and in response to the early detection: definition of a steering angle correction for a setpoint steering angle, wherein the steering angle correction includes a steering-angle limitation of an actual steering angle that can be provided if the unstable driving state is understeering of the vehicle, and wherein the steering angle correction includes a countersteering angle directed counter to the setpoint steering angle if the unstable driving state of the vehicle is oversteering; and steering of the vehicle using the steering angle correction. A vehicle control system, a vehicle and a computer program product are configured to perform the method.

Abstract: A method is for controlling a vehicle in a driving situation. The method includes determining a target self-steering gradient of the vehicle for the driving situation; determining an actual steering angle of the vehicle in the driving situation; determining an actual self-steering gradient of the vehicle in the driving situation based on the actual steering angle; determining a target/actual deviation between the target self-steering gradient and the actual self-steering gradient; providing a first limit value for the target/actual deviation; detecting early an instability of the vehicle if the determined target/actual deviation violates the first limit value; and in response to the early detection of an instability of the vehicle: performing at least one vehicle dynamics intervention using at least one vehicle actuator of the vehicle to counteract the instability of the vehicle.

Abstract: A method for controlling a vehicle in a driving situation includes: determining a trajectory of the vehicle for the driving situation; determining a target steering angle on the basis of the trajectory; determining an actual steering angle of the vehicle in the driving situation; determining a steering angle deviation between the determined target steering angle and the determined actual steering angle; providing a steering angle tolerance value for the steering angle deviation; providing early detection of instability of the vehicle when the determined steering angle deviation violates the steering angle tolerance value; and in response to the early detection of instability of the vehicle: executing at least one driving dynamics intervention using at least one vehicle actuator of the vehicle to counteract the instability of the vehicle. A driver assistance system, a vehicle and a computer program product are configured to perform the method.

Abstract: A method for approximating a friction value includes: determining a load characteristic; determining a setpoint variable of the vehicle; determining a manipulated variable expected value specifying a predicted value of a manipulated variable to be provided to set the setpoint variable, wherein the determination of the manipulated variable expected value is performed using the load characteristic; determining an actual variable corresponding to the setpoint variable; determining a manipulated variable actual value, which is provided at the steering system, in order to modulate the actual variable; determining a manipulated variable deviation between the manipulated variable expected value and the manipulated variable actual value; and/or determining a setpoint-actual deviation between the setpoint variable and the corresponding actual variable; approximating the friction value based on the determined load characteristic and based on the determined manipulated variable deviation and/or the determined setpoint-a

Abstract: A method for approximating a coefficient of friction includes: determining a trajectory of the vehicle for a driving situation; determining a steering angle expected value; determining a steering angle actual value, which is set on the vehicle in the driving situation; determining a vehicle position of the vehicle in the driving situation; determining a manipulated variable deviation between the steering angle expected value and the steering angle actual value, and/or determining a setpoint-actual deviation between the vehicle position during the driving situation and the trajectory; and, approximating the coefficient of friction based on the determined manipulated variable deviation and the determined setpoint-actual deviation. A driver assistance system is configured to perform the method. A vehicle includes the driver assistance system. A computer program product is configured to cause the method to be performed.

Abstract: A method is for improving a vehicle-dynamics-related stability of a utility vehicle, wherein the utility vehicle has a lift axle. The method includes: determining a current ground speed of the utility vehicle; determining a stability-critical speed of the utility vehicle; comparing the current ground speed with the stability-critical speed; determining a lift status of the lift axle of the utility vehicle; and lowering the lift axle of the utility vehicle if the lift status represents a raised lift axle and the current ground speed is greater than or equal to the stability-critical speed. A device is for improving a vehicle-dynamics-related stability of a utility vehicle.

Abstract: A method for controlling a vehicle train, having a towing vehicle and at least one trailer vehicle. The towing vehicle includes a continuous deceleration device for performing a continuous deceleration. The method includes the steps: determining a trailer mass of the trailer vehicle in the prevailing vehicle configuration of the vehicle train; determining a towing vehicle trailer mass of the towing vehicle in the prevailing vehicle configuration; determining a mass ratio of the prevailing vehicle configuration based on the trailer mass and the towing vehicle mass; and limiting a maximum permissible continuous deceleration power of the continuous deceleration device based on the mass ratio. A driver assistance system is configured to perform the method. A commercial vehicle includes the driver assistance system. A computer program product is configured to perform the method.

Abstract: A method approximates a friction value between wheels of a vehicle and a road surface. The method includes the following steps: carrying out at least one test acceleration of the vehicle by acting on at least one test wheel; ascertaining a wheel slip of the test wheel for at least one period of the test acceleration; ascertaining a test manipulated variable provided during the period in order to act on the test wheel; ascertaining a test load characteristic present on the test wheel during the period; and ascertaining a reference friction value for the test acceleration on the basis of the ascertained test load characteristic, the ascertained test manipulated variable and the ascertained wheel slip of the test wheel. A driver assistance system is configured to perform the method. A vehicle includes the driver assistance system.

Abstract: A method is for determining a performance discrepancy of a vehicle actuator and includes determining a target degree of freedom of movement value; determining an expected manipulated variable value; determining an actual degree of freedom of movement value; determining an actual manipulated variable value; and obtaining a maximum manipulated variable value. The method includes determining the performance discrepancy of the vehicle actuator using the actual degree of freedom of movement value, the target degree of freedom of movement value, the actual manipulated variable value, the expected manipulated variable value, and the maximum manipulated variable value; and, determining an updated maximum degree of freedom of movement value of the vehicle based on the determined performance discrepancy. An actuator monitoring system is for monitoring a performance characteristic of a vehicle actuator configured to influence at least one degree of freedom of movement of a vehicle.

Abstract: A method is for predicting a transverse dynamic stabilization behavior of a present vehicle configuration of a vehicle. The method includes ascertaining two or more geometric characteristics of the present vehicle configuration; ascertaining two or more load characteristics of the present vehicle configuration; generating an individualized vehicle model of the present vehicle configuration from a vehicle base model of the vehicle using the geometric characteristics and the load characteristics; predicting dynamic properties of the present vehicle configuration using the individualized vehicle model; and defining at least one drive dynamic threshold for the vehicle on the basis of the dynamic properties of the present vehicle configuration. A drive assistance system and/or a computer program is configured to perform the method. A vehicle includes the driving assistance system.

Abstract: A vehicle control system is for a vehicle. The control system has a first control unit configured to determine a manipulated variable of a vehicle actuator of the vehicle and to output same at an actuator interface, a second control unit, which can be connected to a vehicle network and a private network of the vehicle to receive signals that include two or more geometric characteristics and two or more load characteristics of a current vehicle configuration of the vehicle, and a control system network. The second control unit is configured to define a driving dynamics limit value of the current vehicle configuration using the characteristics and to provide the driving dynamics limit value on the control system network. The first control unit is configured to determine the manipulated variable using the driving dynamics limit value.

Abstract: A method is for determining a steering roll radius of a vehicle. The method includes the following steps: during a journey, initiating an asymmetrical braking maneuver on a steered axle of the vehicle, in which a first braking force is supplied to a first wheel of the steered axle, which is greater than a second braking force supplied to the other wheel of the steered axle, during the braking maneuver, detecting a steering command signal input from the driver or a vehicle system and a steering torque applied to the wheels of the braked axle, evaluating the asymmetrical braking maneuver as a function of determined data, determining at least a sign of the steering roll radius of at least the first wheel as a function of the evaluation.

Abstract: A method for determining unstable behavior of a trailer of a vehicle combination, the vehicle combination having N members, one of the members being a tractor vehicle and at least one further member being the trailer, the unstable behavior of the trailer being determined depending on a driving-dynamics actual characteristic variable of the tractor vehicle, includes: determining at least one driving-dynamics actual characteristic variable of the trailer, the at least one driving-dynamics actual characteristic variable characterizing a current driving-dynamics state of the trailer and following from a measurement by at least one sensor in the trailer; and determining at least one driving-dynamics target characteristic variable of the trailer, the at least one driving-dynamics target characteristic variable following from the at least one driving-dynamics actual characteristic variable of the tractor vehicle by using a kinematic model depending on geometric characteristic variables of the vehicle combination.

Abstract: A method for determining unstable behavior of a trailer of a vehicle combination, the vehicle combination having N members, one of the members being a tractor vehicle and at least one further member being the trailer, the unstable behavior of the trailer being determined depending on a driving-dynamics actual characteristic variable of the tractor vehicle, includes: determining at least one driving-dynamics actual characteristic variable of the trailer, the at least one driving-dynamics actual characteristic variable characterizing a current driving-dynamics state of the trailer and following from a measurement by at least one sensor in the trailer; and determining at least one driving-dynamics target characteristic variable of the trailer, the at least one driving-dynamics target characteristic variable following from the at least one driving-dynamics actual characteristic variable of the tractor vehicle by using a kinematic model depending on geometric characteristic variables of the vehicle combination.