Continental Teves, Ag and Company Ohg

Continental Teves Ag & Cvo. Ohg

Continental Automotive Technologies Gmbh

Thomas Raste

Peter Lauer

Urs Bauer

Thomas Berthold

Bernd Hartmann

Matthias Muntu

Rainer Oehler

Ulrich Lüders

Hubertus Raitz Von Frentz

Fred Galkowski

Ulrich Stählin

Alfred Eckert

Peter E Rieth

Georg Roll

Stefan Fritz

Maxim Arbitmann

Andreas Kircher

Zhenfu Chen

Daniel Schmitz

Peter Cisarz

Roger Bauer

Timo SCHRÖDER

Ulrich LÜDERS

A method for determining road surface conditions in a system with at least one vehicle and a data processing device. The vehicle exchanges data with the data processing device wirelessly. The vehicle has at least one sensor for determining measured values describing a road surface friction coefficient, and a computing unit. The data processing device includes a database, containing a road map having a plurality of route sections. The method includes determining measured values for a route section by the sensor, determining a first friction coefficient for the route section by the vehicle's computing unit, sending a data record, containing measured values and/or the first determined friction coefficient and a piece of information identifying the route section, to the data processing device, determining an average friction coefficient for the route section, sending the average friction coefficient determined for the route section to the vehicle, and determining the road surface condition.

Method for determining road surface conditions

A braking system for a motor vehicle, including friction brakes on the wheels of at least one axle, the brakes controlled by a friction brake control device; at least one electric machine connected to at least one wheel and controlled by an electric drive control device; a brake pedal for detecting a deceleration request; a wheel-slip controlling device; and a torque distributing device. The devices for detecting a deceleration request are connected to the wheel-slip controlling device, the wheel-slip controlling device specifying target braking torques for each wheel according to the parameters of the deceleration request. The wheel-slip controlling device connected to a torque distributing device which is connected to the friction brake control device and the electric drive control device and which specifies friction brake requests to the friction brake control device and generator brake requests to the electric drive control device according to the target braking torques.

Slip-controlled braking system for electrically driven motor vehicles

The invention relates to a method for improving the driving stability of a motor vehicle in which driver-independent braking interventions are triggered if a critical driving situation is to be expected on the basis of route information and instantaneous position data of the motor vehicle, and to a corresponding system. According to the invention, the driver predefines, via a human/machine interface, information about the maximum coefficient of friction to be utilized, which is used as the basis for the prediction of a critical driving situation.

Method for improving the driving stability

A method and system for promoting a uniform driving style. A longitudinal speed of a motor vehicle and a route section curvature radius lying ahead of the vehicle are determined when the vehicle approaches the route section. An expected lateral acceleration is determined from the curvature radius and longitudinal speed as the route section is driven through. The lateral acceleration is compared with a permanently predefined lateral acceleration limiting value which can be predefined by the driver. In the event the expected lateral acceleration is greater than at least one of the lateral acceleration limiting values, the longitudinal speed is lowered by an optical, acoustic and/or haptic request to the driver and/or by autonomous braking intervention. If the expected lateral acceleration is smaller than or equal to the lower of the two lateral acceleration limiting values the lowering of the longitudinal speed is reduced by decreasing the engine drag torque.

Method and system for promoting a uniform driving style

The application relates to a device and a method for increasing the safety of a motor vehicle. A first sensor unit () senses the surroundings, in particular in order to detect free spaces and objects (), and the position and movement thereof. A second sensor unit () senses the state of the surroundings, a third sensor unit () senses the state of the vehicle, and a fourth sensor unit () senses the driver's commands. The data are merged and a driving safety coordinator () determines at least one reliable driving corridor (K, K, K, Kto Kn) predictively and situationally in order to determine the operational safety. The driver's command can be limited to the driving corridor (K, K, K, Kto Kn) by means of components () which can be actuated actively and/or the motor vehicle () can be kept in the driving corridor (K, K, K, Kto Kn) by means of the components () which can be actuated actively.

Safety device for motor vehicle and method for operating a motor vehicle

A device and method for the establishment of quality parameters of a digital map. A currently determined position of the vehicle and a measured value of an attribute of this position is used to calculate a quality parameter which serves as additional information for the data of the digital map. A driver assistance system constitutes an improved aid for a driver of a vehicle, since, in addition to the data of the digital map, the driver assistance system uses the feedback information of the quality parameter.

Establishing quality parameters of a digital map

A driving dynamics control system for vehicles. The control system including at least one driving dynamics controller that is fed setpoint specifications and driving state variables as input data. The control system also includes a plurality of actuators that can be controlled and/or regulated to modify the dynamics of the vehicle, such as steering, adjustable independently of the driver, on a front and/or rear axle of the vehicle, a chassis adjustable independently of the driver, a brake adjustable independently of the driver, and a drive train adjustable independently of the driver. The driving dynamics controller determines a central control specification from the setpoint specifications and the driving state variables and sends it to a distribution algorithm that distributes the control specification into manipulated variables for driving the actuators.

Driving dynamics control system for vehicles

A method for determining an optimal steering angle in understeer situations of a vehicle is described. To assist a driver in reliably stabilizing the vehicle during an understeer situation while driving, a model-based driving traction coefficient factor, a model-based kinematic factor, and a float angle are taken into account in the determination of a steering angle. A limited steering angle &#x3b4;at which a maximum lateral force is set, is determined by addition of the driving traction coefficient factor, the kinematic factor, and the float angle. A system suitable for implementation of the method is also described.

Method and system for determining an optimal steering angle in understeer situations in a vehicle

The present device relates to a method for regulating the driving dynamics of a vehicle, in which at least one wheel of the vehicle is acted upon by a torque on the basis of control of a clutch transmitting a torque to the wheel and/or on the basis of control of a differential distributing torque to the wheel and at least to one other wheel. The method is characterized in that a value of the torque is determined as a function of a first and a second value of a yaw moment. The first value of the yaw moment is in the form of a value of the yaw moment generating a setpoint value of a yaw rate on the basis of a vehicle reference model is determined on the basis of a vehicle reference model and the second value of the yaw moment is determined as a function of a system deviation between the setpoint value of the yaw rate and a detected actual value of the yaw rate and as a function of a system deviation between a setpoint value and an actual value of another driving state variable that is different from the yaw rate.

Method and device for regulating the driving dynamics of a vehicle

Disclosed is a method for assisting an operator of a vehicle in adjusting a nominal steering angle at steerable wheels of the vehicle for the vehicle stabilization. An additional steering torque is applied to the steering line of the vehicle, which is determined dependent on a difference between a nominal steering angle and an instantaneous steering angle. The method is characterized in that a value of a load moment acting on the steering line of the vehicle is estimated, and that the additional steering torque is established dependent on the estimated value for the load moment.

Method and device for assisting a motor vehicle server in the vehicle stabilization

A device for controlling the driving dynamics of a vehicle senses at least one driving condition variable being representative of a driving condition and has a driving dynamics controller for determining an additional steering angle, according to which a steering motion can be carried out in addition to the steering motion commanded by an operator. The driving dynamics controller () has at least two control units (), which are respectively associated with one driving condition range. It includes a determinator for determining a prevailing driving condition, in which the prevailing driving condition can be established based on the driving condition variable ({dot over (&#x3a8;)}, {dot over (&#x3b2;)}, a), and in that it includes an activation logic () being in connection with the determination means and being adapted to enable a control unit (), which is associated with the established driving condition range.

Driving dynamics control adapted to driving conditions and based on steering interventions

In a method and a device for assisting an operator of a vehicle in the vehicle stabilization, an additional steering torque is applied to the steering line of the vehicle. The method manifests itself by the feature that a first component of the additional steering torque is determined depending on a steering angle difference between an instantaneous steering angle at steerable wheels of the vehicle and a nominal steering angle, and the steering angle difference is determined depending on a difference between an instantaneous value of a yaw rate of the vehicle and a value of a reference yaw rate, and with the value of the reference yaw rate being established in a vehicle model by way of a value of at least one variable predefined by the driver. The device implements the method.

Method and device for assisting an operator of a vehicle in the vehicle stabilization

A method for the online determination of values of driving dynamics for a motor vehicle. To improve the quality of the control of a motor vehicle and to reduce the demands placed on the driver, the invention discloses a driving dynamics control including the (1) estimated output quantities &#x177;in dependence on determined or estimated input quantities u and predetermined or predicted vehicle state variables {circumflex over (x)} and optionally further quantities, (2) comparing the estimated output quantities &#x177;with measured output quantities y, and (3) determining the estimated driving dynamics quantities {circumflex over (x)}(t/t) in dependence on the measurement result and, as the case may be, further criteria.

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Oberursel, Germany

Thomas Raste