Robert Boschgmbh

Harald Michi

Werner Uhler

Michael Scherl

Michael Weilkes

Bernd Lichtenberg

Hermann Winner

Chi-Thuan Cao

Goetz Braeuchle

Alfred Schulz

Andreas Erban

Michael Schubert

Helmut Janetzke

Michael Bachmann

Holger Hofmann

Fabian Stein

Carsten Schroeder

Matthias Volkert

Stepan Kroupa

Ussama Lazouane

Christian Korthals

Michael Rink

A method and a device for ascertaining a dynamic tire circumference of a transportation vehicle. The method includes: receiving a first signal representing a yaw rate of the transportation vehicle, a second signal representing a wheel rotation speed of a wheel of the transportation vehicle, a third signal representing a steering angle of the transportation vehicle, and a fourth signal representing a dynamic track width of the transportation vehicle; ascertaining a first output signal of a first Kalman filter that represents the dynamic tire circumference of the wheel, using the first signal, the second signal, the third signal, and the fourth signal as input signals for the first Kalman filter; and using the first output signal in a control unit of the transportation vehicle.

Method and device for ascertaining a dynamic tire circumference of a means of transportation

A braking device for a motor vehicle has a setpoint controlled deceleration device, which, upon receipt of a braking request input by a driver or an assistance system, for example, on the basis of a difference between a setpoint value and an actual value, drives a brake of the vehicle to generate a setpoint controlled braking torque for a deceleration of the motor vehicle. In addition, the braking device has a braking preparation control, which, upon receipt of a braking preparation signal, drives the brake independently of the setpoint value to produce at least one braking pressure for generating a preparation braking torque for a pre-deceleration of the motor vehicle. The braking preparation signal is generated as soon as a driving situation is ascertained where a braking request input by a driver or an assistance system is very likely imminent.

Braking device for a motor vehicle having preparatory pre-deceleration and method for controlling such a braking device

Adaptive cruise control (ACC) system for motor vehicles is provided, the ACC system having a sensor system for acquiring data concerning a target object and the own (host) vehicle, an actuator system for controlling the longitudinal movement of the vehicle, and a controller that intervenes in the actuator system within certain intervention limits in order to maintain a defined, controlled target distance from the target object, and an output device for issuing a take-over request to the driver if the controlled target distance cannot be maintained. The ACC system further includes a prediction system for predicting a conflict situation in which the controlled target distance cannot be maintained, in which case the take-over request is initiated before the conflict situation actually occurs.

Adaptive cruise control system for motor vehicles

A speed controller for motor vehicles having an input device for the input of a desired speed Vby the driver, and having a plurality of operating modes which are able to be activated in different speed ranges and differ in their functional scope. A change in the operating mode, which results in the loss of a safety-relevant function, is provided or enabled by a command of the driver, characterized by a decision unit, which, in the light of predefined criteria, determines whether a change in the desired speed V, which is input by the driver, is to be interpreted as a command for changing the operating mode.

Speed controller having several operating modes

A method is provided for generating control variables for guiding a motor vehicle as a function of input quantities representing the traffic situation, and as a function of dynamically changeable parameters. The method provides that a single evaluation quantity is formed from a set of a plurality of input quantities, and a plurality of the parameters are determined on the basis of the single evaluation quantity.

Vehicle guidance system

A cruise control system for motor vehicles is described, having a sensor device for measuring the vehicle's operating parameters and for measuring the distance to an object located in front of the vehicle, and having a controller for controlling the vehicle's speed or acceleration as a function of the measured operating parameters and distance data, the controller having a stop-and-go function for automatically controlling driving off, rolling, and stopping as a function of the movements of the object, and being designed for the purpose of continuously checking the sensor device during the stop-and-go operation for one or multiple predefined conditions which contradict a safe stop-and-go operation, and which, in the presence of such a condition, initiates a procedure for the shutdown of the stop-and-go function.

Cruise control system having a stop and go function

A device for adaptive distance and speed control in motor vehicles, comprising a sensor device for measuring the distance and relative speed of a target object located in front of the vehicle; a regulating device, which has a distance control function to regulate to a specific distance to the target object and outputs temporally changeable actuating variables (a, a) to actuating elements of the drive and/or brake system of the vehicle; and a torque dampener for limiting the temporal changes of the actuating variables, characterized by a dynamic device that detects sudden changes in the traffic situation detected by the sensor device and restricts the function of the torque dampener according to the situation while maintaining distance and speed control.

Device for adaptive distance and speed control with having torque dampening

A device for the longitudinal guidance of a motor vehicle, having a speed sensor for measuring the driving speed of the vehicle; a distance sensor for measuring the distance to an obstacle possibly located in front of the vehicle; and a controller, which intervenes in the drive and brake system of the vehicle and regulates the driving speed, possibly as a function of the distance to the obstacle, in a closed-loop control circuit if the vehicle speed is above a certain limit speed, characterized by a control device, which intervenes in the drive and brake system in a controlling manner at driving speeds below the limit speed.

Device for the longitudinally guiding a motor vehicle

Cruise control system for motor vehicles is provided, which control system has a sensor device for measuring the vehicle's performance characteristics and for measuring the distance to a target ahead of the vehicle, a controller to control the vehicle's speed or acceleration as a function of the measured performance characteristics and distance data, and an input device for a shut-off command to shut off the controller. The control system also has a shut-off function to shut off the controller as a function of other operational commands from the driver, and the controller has a stop function for automatically braking the vehicle to a standstill. The input device for the shut-off command is deactivated if the stop function is active and the vehicle is stationary.

Speed control with stop function

A cruise control system for motor vehicles is described, having a sensor device for measuring the vehicle's performance characteristics and for measuring the distance to a target object ahead of the vehicle, and a controller which is used to control the vehicle's speed or acceleration as a function of the measured performance characteristics and distance data and has a stop function for automatically braking the vehicle to a standstill as well as at least one standstill state in which the vehicle is held in a stationary position by automatic brake activation, and from which it may only drive off again via an operational command by the driver, the operational command becoming effective only when a confirmation signal is present in addition to the operational command.

Cruise control system having a stop function

A device for the longitudinal guidance of a motor vehicle, having a sensor device for the location of objects in the nearfield of the vehicle, a controller which generates a reference variable for a motion variable of the vehicle for the regulation of the vehicle's speed, as a function of the location data of the sensor device, and an actuator which has an effect on the motion variable as a function of the reference variable, wherein a mathematical model of the actuator is stored in a memory, which describes the dynamic behavior of the actuator, that is, it produces a relationship between an input variable supplied to the actuator and an output variable of the actuator; and a compensating element is provided to convert the reference variable, by way of the model, into the input variable in such a way that the dynamic behavior of the actuator is compensated for.

Device for the longitudinal guidance of a motor vehicle

A method and a device are described for determining a future travel-path area of a first vehicle, which is furnished with a distance sensor. In this context, using the distance sensor at pre-established or selectable time points, at least relative positions are determined of at least one vehicle traveling ahead with respect to the first vehicle. At least these determined relative positions are stored in at least one storage device. These relative positions, stored in the storage device, constitute in each case a course path of the corresponding vehicle traveling ahead. The future travel path area of the first vehicle is determined at least on the basis of the course path of the vehicle traveling ahead. The course path of the vehicle traveling ahead is projected in the direction of the position of the first vehicle.

Method and device for determining a future travel-path area of a vehicle

A method of cruise control and distance regulation in motor vehicles, in which the distance from a vehicle driving in front is measured, and at least two operating modes (e.g., ACC and stop and go) are provided for the distance regulation, these modes being activatable in different overlapping speed ranges, and in which it is possible to switch between these operating modes in at least one direction only by a command by the driver. The speed of the vehicle driving in front is extrapolated into the future on the basis of the speed of one's own vehicle and the measured distance data and/or the relative speed data, and a switch prompt is output to the driver when the extrapolated speed is outside the allowed range for the current mode, and the current speed is within the allowed range for the other mode.

Method for cruise control and distance regulation in motor vehicles

A method for signal evaluation, e.g. with pulse wheels, is described, in which the distance between predeterminable signal edges is determined in a microcontroller that has a CPU, timer, and memory, in that upon the occurrence of signal edges, an interrupt is triggered with which the existing timer values are stored. Based on the difference between predeterminable timer values, time intervals are determined which are inversely proportional to the velocity or speed. So that it is possible to use timers with a relatively low bit count, for example 16 bits, the numerical values obtained when there is a timer overflow are also determined and are taken into account in the determination of the distances. If drum stores are used, only four bits per drum store value are required, one check bit and three bits as an overflow counter.

Method for evaluating signals with the aid of a timer and an overrun counter

A method for detecting misalignment in a motor vehicle sensor system, in which signals are emitted, signals reflected by a stationary object are received, and a relative angle and a relative distance or a longitudinal displacement and a transverse displacement between the detected object and a reference axis of the motor vehicle as well as a relative velocity between the detected object and the motor vehicle are determined on the basis of the signals emitted and received. A correction value is determined for the relative angle on the basis of the relative angle, the relative distance, and a velocity of the vehicle in question or on the basis of the longitudinal displacement, the transverse displacement, and the vehicle's own velocity.

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Oelbronn-Duerrn, Germany

Harald Michi