EP4526183A1 - Verfahren zum ermitteln einer fahrtrajektorie, steuereinrichtung und fahrzeug - Google Patents
Verfahren zum ermitteln einer fahrtrajektorie, steuereinrichtung und fahrzeugInfo
- Publication number
- EP4526183A1 EP4526183A1 EP23727227.3A EP23727227A EP4526183A1 EP 4526183 A1 EP4526183 A1 EP 4526183A1 EP 23727227 A EP23727227 A EP 23727227A EP 4526183 A1 EP4526183 A1 EP 4526183A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wheel
- vehicle
- trajectory
- maneuver
- collision angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/027—Parking aids, e.g. instruction means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/027—Parking aids, e.g. instruction means
- B62D15/0285—Parking performed automatically
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/165—Anti-collision systems for passive traffic, e.g. including static obstacles, trees
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/168—Driving aids for parking, e.g. acoustic or visual feedback on parking space
Definitions
- the invention relates to a method for determining a travel trajectory for a driving maneuver of a vehicle, wherein the travel trajectory describes a movement of the vehicle to a target position and wherein to reach the target position at least one traversable structure, the height of which differs from a road surface, of at least one wheel of the vehicle is run over.
- the invention further relates to a control device and a vehicle.
- Driving up or down curbs or driving over comparable structures with at least one wheel of a vehicle carries the risk of damage to the wheel or to a tire and/or a rim of the wheel, even at low driving speeds. if the wheel comes into contact with the curb or structure at an awkward angle. For such driving maneuvers, it is desirable to determine a driving trajectory to be followed to carry out the driving maneuver in such a way that there is as little risk of damage to a wheel of the vehicle as possible.
- DE 10 2013 221 355 A1 describes a method for parking a vehicle in a parking space, the parking space being at least partially located on an elevated road boundary in a curve. This is done using At least one distance sensor records environmental data from which an environmental model of the raised road boundary is determined.
- the environment model describes at least one curvature of the raised road boundary, with a target parking position being determined depending on this curvature. Approaching the end position at a flat angle can be avoided in order to avoid damage to the rims or tires.
- a method for path planning of parking a vehicle in a parking space comprising at least one vehicle having a trajectory.
- the vehicle is moved from a starting position to an end position, with unevenness in the road such as curbs or gutter-like depressions along the vehicle being taken into account during the path planning.
- the path planning is modified in relation to an optimized path planning without taking road bumps into account in such a way that the number of crossings of the road bumps is reduced.
- the vehicle is determined in such a way that an angle between the wheel and the unevenness in the road has a certain minimum size.
- the invention is based on the object of specifying an improved method for determining a driving trajectory for an autonomous or semi-autonomous driving maneuver of a vehicle, which in particular enables an improved determination of a collision angle between at least one wheel of the vehicle and the structure.
- a collision angle of the wheel assigned to the wheel with the structure is determined from a wheel trajectory assigned to the at least one wheel and an environment model describing at least the structure and the travel trajectory is determined in such a way that the collision angle during the driving maneuver lies within a predetermined angular range.
- the driving trajectory which enables the desired driving maneuver to be carried out, is determined in particular in such a way that flat angles between the wheel and the curb are avoided, at which there is a comparatively high risk of damage to the wheel, for example scratching a rim or damage to the side a tire.
- a wheel trajectory assigned to the at least one wheel enables a precise collision angle determination for each wheel that comes into contact with the structure when carrying out the driving maneuver or when traveling along the determined trajectory.
- a single wheel of the vehicle several wheels of the vehicle or all wheels of the vehicle can drive over the structure.
- the driving maneuver can in particular be a semi-autonomous or autonomous driving maneuver.
- the vehicle can be, for example, a passenger car with four wheels. It is also possible to design the vehicle as another type of motor vehicle or as a non-motorized vehicle, for example as a trailer. In particular, the vehicle can also be a combination of a motor vehicle and a trailer, with a collision angle determination being possible for both the wheels of the motor vehicle and the wheels of the trailer.
- the method advantageously enables an individual collision angle of the respective wheel to be determined for each of the wheels.
- the respective collision angle can be determined for each wheel of the vehicle that passes over the structure when carrying out the driving maneuver.
- the wheel trajectory assigned to the wheel can be used for each of the wheels.
- the collision angle can be determined for each wheel from the individual wheel trajectories, taking into account the environment model that describes the structure. This makes it possible to determine the driving trajectory in such a way that the collision angle for each of the wheels when carrying out the driving maneuver lies within the specified angular range.
- the same angular range can be specified for each of the wheels or different angular ranges can be specified for different wheels, in particular for each wheel.
- a structure to be driven over has an irregular shape and/or is curved
- scenarios can occur in which different collision angles arise for different wheels of the vehicle.
- these collision angles for the individual wheels of a vehicle can also differ significantly from an angle between the trajectory of the vehicle and the structure.
- the method according to the invention can also advantageously avoid driving over the structure with an unfavorable collision angle between one or more wheels and the structure in such cases.
- the collision angle describes the angle between an edge of the wheel lying in the direction of movement of the wheel and an edge of the structure intersected by the wheel trajectory.
- the collision angle describes this angle regardless of the direction of movement of the wheel, i.e. regardless of whether the wheel is driving up or down the structure, for example a curb.
- a collision angle within the predetermined angular range for the trajectory to be determined can advantageously be maintained for all scenarios and all wheels.
- the explicit and precise calculation of the collision angle for each wheel means that assumptions that can limit the availability for the driving maneuver can be dispensed with.
- a precise determination of the collision angle also has the advantage that the driving maneuver does not have to be interrupted and/or continued with a corrected driving trajectory, since a driving trajectory that is optimized with regard to the collision angle is determined at the beginning, so that no changes are made in advance while the maneuver is being carried out considered collision angles occur which would require an interruption and/or a correction. It is also advantageous that, for example, when the driver is offered a (partially) automated parking process as a driving maneuver, it has been ensured that the parking process correctly takes the curb into account and that the end parking position or the target position can be reached.
- the collision angle is additionally determined as a function of an at least two-dimensional wheel model that at least partially describes the geometry of the wheel.
- the model can describe a width of the wheel in the transverse direction of the vehicle and an extent of the wheel in the longitudinal direction of the vehicle. Taking into account the geometric extent of the wheel enables a precise determination of the contact or collision angle, since this angle can be different for different sections of the wheel, particularly in the case of a curved or irregularly shaped structure.
- the predetermined angular range for the collision angle is also maintained in relation to the entire wheel width or in relation to the entire extension of the wheel in the longitudinal direction of the vehicle .
- the wheel model comprises a projection of the at least one wheel onto the road surface and/or at least one projection of the at least one wheel assigned to the height of a surface of the structure, the collision angle being determined using the projection.
- the wheel model can include different projections assigned to different heights of the structure.
- a Such a wheel model can be referred to as a 2.5-dimensional model.
- a precise collision angle determination can advantageously be carried out.
- a possible collision of the outside or inside of the wheel with the structure can also be taken into account.
- An occurring collision angle can also advantageously be limited to the specified range of values.
- the surface of the structure can, for example, be between 3 cm and 25 cm above and/or below a road surface.
- the lower interval limit of 3 cm and in particular the upper interval limit of 25 cm can also be chosen to be larger or smaller, for example depending on a vehicle type and/or depending on a wheel type or tires of the vehicle.
- the structure can be described within the environment model, for example, as a polygon, as a spline or as a geometric figure, for example as a straight line, an arc segment or similar.
- a curved curb as a structure can, for example, also be described as a circle or as a circular arc segment with a radius corresponding to the curvature, which is advantageous can reduce the computational effort for collision checking and thus increase collision checking efficiency.
- a wheel trajectory is determined for each wheel of the vehicle depending on a steering angle of the wheel assigned to the wheel.
- Including the steering angle for the individual wheels makes it possible to take into account that, for example, wheels arranged on a steering axle of a vehicle can have an orientation dependent on the steering angle in relation to the vehicle or in relation to the structure when driving along the trajectory.
- the method can be used to precisely determine the wheel-specific collision angle for each type of vehicle, or for each number of wheels arranged on rigid axles and/or on steerable axles.
- the driving maneuver can be a parking maneuver, a parking maneuver, a turning maneuver or a reversing maneuver.
- a parking or exit maneuver can take place parallel to a direction of travel of the road, transversely to the direction of travel of the road or at an angle to the direction of travel of the road.
- the parking or exiting process can, for example, involve partially or completely driving on a straight or curved curb, the curb correspondingly representing the structure that can be driven over or driven over.
- the environmental sensor can be, for example, an ultrasonic sensor, a radar sensor, a lidar sensor or a camera.
- the vehicle can in particular include several environment sensors, in particular also different types of environment sensors, with the environment model being generated in particular from a fusion of the respective sensor data.
- the range of values for a collision angle between a direction of movement of the wheel and an edge of the structure includes angles greater than 5°.
- damage to the wheel such as scratching a rim or a tire sidewall can be advantageously avoided.
- Small angular ranges for example angular ranges comprising angles greater than 10°, greater than 20°, greater than 30°, greater than 40°, greater than 45° and/or greater than 50°, can also preferably be selected.
- At least one display device for displaying driving information that at least partially describes the driving trajectory and / or at least one actuator of the vehicle are activated to carry out the driving maneuver.
- the display device is used in particular to graphically display information to a driver of the vehicle.
- the display device can be, for example, a display device arranged in an interior of the vehicle or a display device external to the vehicle.
- a display device arranged in an interior of the vehicle can be, for example, a display panel, a heads-up display or the like.
- a vehicle-external display device can be, for example, a mobile device such as a smartphone or the like.
- at least one actuator of the vehicle for example a steering actuator and/or a drive actuator, can be controlled depending on the determined travel trajectory, so that the vehicle can drive along the travel trajectory in a partially or fully automated manner or can carry out the driving maneuver.
- the invention further relates to a control device which is set up to carry out a method according to the invention.
- the control device can communicate with at least one environment sensor of the vehicle and can also be set up to determine the environment model. Alternatively, the control device can also receive the environment model from another computing unit. The wheel trajectory and any wheel model used can also be determined by the control device itself or by another computing device and transmitted to the control device. The control device can further be designed or set up to receive driving maneuver information describing the driving maneuver from a user of the vehicle, for example using a user interface.
- the invention further relates to a vehicle, wherein the vehicle comprises a control device according to the invention.
- 1 shows an exemplary embodiment of a vehicle according to the invention
- 2 shows a schematic representation of a driving maneuver to explain an exemplary embodiment of a method according to the invention
- Fig. 3 is a detailed view of a projection of a wheel used as a wheel model
- Fig. 4 is a representation of the collision angle between a wheel and a structure.
- the vehicle 1 includes several environmental sensors 2, which are arranged at different positions along the circumference of the vehicle 1.
- the environment sensors 2 are each designed as an ultrasonic sensor 3, as a camera 4 or as a radar sensor 5.
- the positions of the surroundings sensors 2 shown and the number of surroundings sensors 2 shown are purely exemplary; in addition to the surroundings sensors 2 shown, further surroundings sensors 2, other and/or additional types of surroundings sensors 2 as well as differently arranged surroundings sensors 2 can also be provided in the vehicle 1.
- the environment sensors 2 are connected to a control device 6 of the vehicle 1.
- the control device 6 is set up to determine a travel trajectory for a driving maneuver of the vehicle 1, the travel trajectory describing a movement of the vehicle 1 to a target position and in order to reach the target position at least one traversable structure, the height of which differs from a road surface at least one wheel 7 of the vehicle 1 is run over.
- the vehicle is designed as a passenger car.
- the vehicle 1 includes four wheels 7, two of the wheels 7 each being a steerable front wheel 8.
- the other wheels 7 each form a rear wheel 9 of the vehicle 1.
- the rear wheels 9 can also be steerable or rigid and therefore not steerable.
- the control device 6 is designed to form an environment model of the vehicle 1 from sensor data transmitted by the environment sensors 2.
- Various objects and structures in the environment of the vehicle 1 are recognized and corresponding descriptions of these objects and structures are stored in the environment model.
- FIG. 2 A traffic situation is shown schematically in FIG. 2, which serves to explain the method that can be carried out by the control device 6 for determining the travel trajectory for a driving maneuver.
- the driving maneuver of the vehicle 1 is to carry out a parking maneuver into a target position 11 between two external vehicles 12, 13, for example determined via the surrounding sensors 2.
- the vehicle 1 carries out a parallel parking maneuver as a driving maneuver.
- the control device 6 determines a travel trajectory 10, via which the vehicle 1 can be moved into the target position 11.
- a structure 14 designed as a curved curb must be driven over by two wheels 7 of the vehicle 1, specifically the right front wheel 8 and the right rear wheel 9.
- the control device 6 determines the travel trajectory 10 such that the collision angle between the wheels 7, which drive over the structure 14, within a predetermined angular range, for example between 5 ° and 90 ° based on a collision angle between one in a direction of movement of the wheel 7 and one Edge of structure 14. For this purpose, the control device 6 determines for each of the wheels 7 a collision angle assigned to the respective wheel 7 with the structure 14 from a wheel trajectory 15, 16 assigned to the respective wheel 7 and the environment model containing a description of the structure. By taking into account the wheel trajectory 15 for the right front wheel 8 and the wheel trajectory 16 for the right rear wheel 9, it can advantageously be taken into account that the wheels 8, 9 each move at a different angle over the structure 14, in particular because of the curved shape of the structure 14 .
- the control device 6 further takes into account the steering angle of the respective wheels 8, 9.
- the right front wheel 8 for example, depending on a previous position of the vehicle 1 and / or depending of a possible movement of the vehicle 1 along a path taken into account in the course of determining the travel trajectory 10, have a different and / or variable steering angle.
- the right rear wheel 9 is unsteered in the present exemplary embodiment and therefore has a constant, unchangeable orientation to the vehicle 1.
- a steering angle can also be taken into account for the rear wheel 9, for example if the vehicle 1 has a steerable rear axle or rear wheel steering.
- the control device 6 takes into account a wheel model for the wheels 8, 9, which describes the geometry of the respective wheel 8, 9.
- the wheel model can, for example, include a projection 17 of the wheel 8, 9, the projection 17 having the height h of a surface 23 of the structure 14 compared to one Road surface 18 is assigned.
- the collision angle can be determined precisely and in particular over the entire width of the respective wheel 8, 9 in the transverse direction of the vehicle, which runs perpendicular to the plane of the drawing in FIG.
- the wheel model can include such projections 17 for different heights h of the structure 14 and/or for different height classes of structures 14.
- the wheel model can also contain a further projection of the at least one wheel 8, 9 onto a road surface 18.
- the wheel model can, for example, be a 2.5-dimensional model and preferably have different, different heights of a structure to be driven over
- FIG. 4 A top view of the scene shown in FIG. 3 is shown schematically in FIG. 4.
- the projection 17 of the wheel 8, 9 can be described, for example, as a polygon and/or as an ellipsoid, with a rectangular shape of the projection 17 being shown here as an example.
- the expansion of the respective wheel 8, 9 in the longitudinal direction of the vehicle can also be taken into account at a height corresponding to the structure height h.
- the collision angle 19 which is shown in FIG .
- the range of values can, for example, include angles greater than 5°. Alternatively, other limits for the angular range are also possible.
- the direction of movement 20 is perpendicular to an edge 22 of the wheel 8, 9, with the edge 22 coming into contact with the edge 21 of the structure 14 at the collision angle 19.
- the travel trajectory 10 can be determined while maintaining the angular ranges.
- the travel trajectory 10 can also be optimized with regard to other parameters, for example the number of trips over the structure 14, for example driving onto and/or driving off the curb, can also be minimized.
- the structure 14 can also be another type of structure whose height differs from the road surface 18.
- the structure 14 can, for example, also be a speed bump, a gutter, a pothole, a road curve or a comparable structure be.
- structures with a height between 3 cm and 25 cm can be considered as a traversable structure 14, since these can in principle be driven over by the vehicle 1 at slow speeds, but at unfavorable collision angles there is a risk of damage to the wheel 7 or the wheels 7 consists.
- the vehicle 1 can also be a different type of vehicle.
- the vehicle can also be a combination of a towing vehicle and a trailer, with the collision angle-dependent determination of the travel trajectory 10 taking into account both the wheel trajectories of the towing vehicle and the trailer.
- Driving trajectories 10 for turning maneuvers, reversing maneuvers, a driving maneuver with a trailer over a threshold or the like can also be carried out as described above, taking into account the collision angle between one or more wheels 7 and the structure 14.
- At least one display device (not shown) of the vehicle 1 can be controlled to display driving information that at least partially describes the travel trajectory 10.
- the display device serves in particular to graphically display information to a driver of the vehicle 1.
- the display device can be, for example, one in an interior of the Display device arranged on the vehicle or a display device external to the vehicle.
- At least one actuator (not shown) of the vehicle for example a steering actuator and/or a drive actuator, can also be used
- Execution of the driving maneuver can be controlled, that is, depending on the determined driving trajectory 10, controlled in such a way that the vehicle 1 can drive along the driving trajectory 10 or carry out the driving maneuver in a partially automated or fully automated manner.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022205034.7A DE102022205034A1 (de) | 2022-05-20 | 2022-05-20 | Verfahren zum Ermitteln einer Fahrtrajektorie, Steuereinrichtung und Fahrzeug |
| PCT/DE2023/200094 WO2023222167A1 (de) | 2022-05-20 | 2023-05-12 | Verfahren zum ermitteln einer fahrtrajektorie, steuereinrichtung und fahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4526183A1 true EP4526183A1 (de) | 2025-03-26 |
Family
ID=86605867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23727227.3A Pending EP4526183A1 (de) | 2022-05-20 | 2023-05-12 | Verfahren zum ermitteln einer fahrtrajektorie, steuereinrichtung und fahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4526183A1 (de) |
| DE (1) | DE102022205034A1 (de) |
| WO (1) | WO2023222167A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004001555B4 (de) | 2004-01-10 | 2018-02-15 | Robert Bosch Gmbh | Verfahren und System für die Spurführung eines Fahrzeugs |
| DE102009003216A1 (de) * | 2009-05-19 | 2010-11-25 | Robert Bosch Gmbh | Fahrerassistenzverfahren zum Auslösen einer vorbestimmten Aktion in Abhängigkeit eines prädikitiv erfassten Höhenprofils entlang einer Radtrajektorie und korrespondierendes Fahrerassistenzsystem |
| DE102013221355A1 (de) | 2013-10-22 | 2015-04-23 | Robert Bosch Gmbh | Verfahren zum Einparken eines Fahrzeuges auf einem Bordstein |
| DE102014009591A1 (de) * | 2014-06-27 | 2015-12-31 | Audi Ag | Verfahren zum Betrieb eines Kraftfahrzeugs und Kraftfahrzeug |
| DE102015201038A1 (de) | 2015-01-22 | 2016-07-28 | Robert Bosch Gmbh | Verfahren zur Bahnplanung des Einparkens eines Fahrzeugs in eine Parklücke |
| DE102016101359A1 (de) * | 2016-01-26 | 2017-07-27 | Valeo Schalter Und Sensoren Gmbh | Verfahren zum Verfahren zum Unterstützen eines Fahrers eines Kraftfahrzeugs bei einem Einparkvorgang in eine Parklücke mit Bordstein, Fahrerassistenzsystem sowie Kraftfahrzeug |
| DE102016117705A1 (de) | 2016-09-20 | 2018-03-22 | Valeo Schalter Und Sensoren Gmbh | Verfahren zum Betreiben eines Fahrerassistenzsystems zum zumindest semi-autonomen Manövrieren eines Kraftfahrzeugs, Recheneinrichtung, Fahrerassistenzsystem sowie Kraftfahrzeug |
| DE102020124920A1 (de) | 2020-09-24 | 2022-03-24 | Valeo Schalter Und Sensoren Gmbh | Verfahren zum betreiben eines fahrassistenzsystems für ein fahrzeug, computerprogrammprodukt, fahrassistenzsystem und fahrzeug |
-
2022
- 2022-05-20 DE DE102022205034.7A patent/DE102022205034A1/de not_active Ceased
-
2023
- 2023-05-12 WO PCT/DE2023/200094 patent/WO2023222167A1/de not_active Ceased
- 2023-05-12 EP EP23727227.3A patent/EP4526183A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022205034A1 (de) | 2023-11-23 |
| WO2023222167A1 (de) | 2023-11-23 |
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| 17Q | First examination report despatched |
Effective date: 20250917 |