EP4619201A1 - Anpassung einer greifsimulation durch parameteridentifikation in der realen welt - Google Patents
Anpassung einer greifsimulation durch parameteridentifikation in der realen weltInfo
- Publication number
- EP4619201A1 EP4619201A1 EP23793796.6A EP23793796A EP4619201A1 EP 4619201 A1 EP4619201 A1 EP 4619201A1 EP 23793796 A EP23793796 A EP 23793796A EP 4619201 A1 EP4619201 A1 EP 4619201A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gripping
- data
- robot
- holding
- real
- 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
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Program-controlled manipulators
- B25J9/16—Program controls
- B25J9/1656—Program controls characterised by programming, planning systems for manipulators
- B25J9/1671—Program controls characterised by programming, planning systems for manipulators characterised by simulation, either to verify existing program or to create and verify new program, CAD/CAM oriented, graphic oriented programming systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Program-controlled manipulators
- B25J9/16—Program controls
- B25J9/1612—Program controls characterised by the hand, wrist, grip control
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/39—Robotics, robotics to robotics hand
- G05B2219/39505—Control of gripping, grasping, contacting force, force distribution
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/39—Robotics, robotics to robotics hand
- G05B2219/39542—Plan grasp points, grip matrix and initial grasp force
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/40—Robotics, robotics mapping to robotics vision
- G05B2219/40053—Pick 3-D object from pile of objects
Definitions
- the present invention relates to a method for the automated optimization of parameters, in particular for a robot-assisted gripping process, a method for controlling a gripping robot, a system for the automated optimization of parameters, and a computer program or computer program product.
- Simulation-to-reality gap Sim2Real gap
- the object of the present invention is in particular to reduce the simulation-to-reality gap and, in particular, to optimize the parameterization of the simulation.
- a method for automatically optimizing parameters, in particular for a robot-assisted gripping process.
- the method comprises determining real gripping data, wherein the real gripping data describe at least one gripping success of a gripping position, in particular on an object to be gripped by a gripping robot or on an object gripped by a gripping robot.
- the method comprises determining real holding data, wherein the real holding data describe at least one force, in particular a force on the object gripped by a gripping robot and/or on the gripper of the gripping robot, which in particular has (successfully) gripped an object to be gripped.
- the real holding data describes at least one parameter or relevant property that is relevant to the existence of the grip on the gripped object, in particular a parameter or property related to the grip.
- a relevant parameter or property is a force, in particular a normal force, a frictional force, in particular a friction or a friction coefficient, such as in particular (for) static friction, rolling friction, spinning friction, and/or lateral friction, which acts on the gripped object and/or on at least one gripper finger, in particular a closing force of the at least one gripper finger, and/or a mass, inertia and/or position of a center of mass of the gripped object and/or of the at least one gripper finger.
- the method further comprises, in particular in one step, simulating, in particular replicating, further in particular in a simulation environment, wherein at least one gripping process, in particular a handle, is simulated in the simulation environment based on the gripping process, in particular a handle, underlying the determined real gripping data and/or the determined real holding data.
- the method further comprises, in particular in one step, data-based optimization of parameters of the simulated gripping process, in particular of the simulated handle.
- the method comprises optimizing the parameters of the simulated gripping process, in particular of the simulated handle, based on the determined real gripping data and/or based on the determined real holding data.
- optimized parameters can advantageously be determined, in particular an improved simulation environment can advantageously be achieved, furthermore in particular a more realistic or realistic/closer to reality simulation or simulation environment, in particular in comparison with simulations or simulation environments that are not optimized or optimized based on real gripping data and/or real holding data.
- real gripping data is to be understood in particular as information, particularly digital information, which describes the data of a real gripping process, in particular of a grip that has actually been carried out.
- the term is to be understood, in one embodiment, as a counterpart to "gripping
- Simulation data refers to Information describing data of a simulated grasping action, in particular a simulated grip, in a simulation environment.
- holding real data should be understood in particular as information, particularly digital information, which describes data of a holding during or during a gripping process that is actually carried out, in particular during or during a grip that is actually carried out.
- the term should be understood, in one embodiment, as a counterpart to "holding simulation data”.
- the “real data” and the “simulation data” each describe the same thing or information, respectively for the reality and the simulation, or the simulation environment.
- the data-based optimization comprises an automatic adjustment of the parameters, in particular an automatic adjustment of a simulated mass of the simulation, an automatic adjustment of (simulated) dynamic parameters and/or a simulated force, in particular friction force or friction.
- the automatic adjustment of the parameters is based on at least one evaluation of a cost function on which the optimization is based or on which it is optimized.
- the data-based optimization in particular the optimization of the parameters, is based on a cost function of real gripping data and gripping simulation data and/or real holding data and holding simulation data.
- the gripping simulation data describe at least one simulated gripping parameter, in particular a gripping success of a gripping position in the simulation.
- the holding simulation data describe at least one simulated holding parameter, in particular a force of the simulated grip.
- the entries in the Vectors can be 1 or 0, corresponding to a successful grip or an unsuccessful grip.
- the data-based optimization comprises the adaptation of, in particular abstract, parameters, such as in particular time steps of the simulation, solver iterations or the like, further in particular "lateral friction”, “rolling friction”, “spinning friction” of the gripping object and/or “lateral friction”, “rolling friction”, “spinning friction” of the gripper, in particular of at least one gripper finger, a mass, an inertia and/or a center of mass of the gripping object, or the like.
- the object can be made heavier in the simulation or a friction parameter can be adjusted, in particular advantageously automatically and/or data-based.
- the optimization in particular the data-based optimization, is carried out using a gradient-free optimizer.
- the optimization algorithm is based on a Monte Carlo algorithm or the optimization algorithm is a Monte Carlo algorithm, in particular a covariance matrix adaptation evolution strategy (CMA-ES) or the like.
- the determination of real gripping data comprises determining a plurality of gripping positions, in particular collision-free and/or graspable, on the (real) object to be gripped. In one embodiment, the determination of real gripping data further comprises determining a plurality of gripping positions, in particular collision-free and/or graspable. In one embodiment, the determination of real gripping data further comprises determining a plurality of gripping positions, in particular collision-free and/or graspable. Real data further comprises selecting one of the determined grip positions. In one embodiment, determining gripping real data further comprises gripping the object, in particular with a gripping robot, based on the selected grip position.
- determining gripping real data further comprises storing the gripping success for the selected grip position, in particular for the selected grip position on the object to be gripped and for a pose of the object to be gripped, in particular on a work surface of the gripping robot.
- the determination of real gripping data comprises a step, in particular a preceding step, with randomized placement of an object or objects to be gripped, in particular with the gripping robot.
- determining gripping real data further comprises repeating the method steps described herein for determining gripping real data.
- the object to be gripped is moved by the robot, in particular after determining real gripping data, to a random position, in particular to a random position in the working area of the gripping robot, and then dropped.
- grip positions are determined that correspond to the random pose of the object to be grasped.
- this also makes it possible to obtain a pre-sorted set of handles for the object, in particular according to gripping success.
- a method for optimizing a grip sampler comprises, at least substantially, the same steps as determining real grip data, in particular with a selection of one of the determined grip positions based on a selection frequency of the grip positions, as described herein.
- a grip sampler can be optimized by means of the determined real grip data, in particular a grip with a high or higher gripping success, in particular determined by the gripping sampler, further in particular based on the determined, in particular stored, real gripping data.
- the selection of one of the determined grip positions is based on a selection frequency of the determined grip positions, in particular the determined grip position with the lowest selection frequency of the determined grip positions is selected.
- determining real holding data includes determining a holding grip position, in particular on a gripped object, wherein the holding grip position is arranged on the object to be gripped and/or on the gripped object in such a way that a force can be exerted on the object to be gripped and/or on the gripped object via the holding grip position, which force can act or acts opposite to at least one force on the object to be gripped and/or on the gripped object, in particular opposite to a gripping direction of the gripping robot.
- determining real holding data further includes gripping, in particular holding, the object at the determined holding grip position, in particular by a holding robot that is different from the gripping robot.
- this advantageously makes it possible for parameter values for a simulation to be determined or ascertained more precisely, in particular more quickly. In one embodiment, this advantageously makes it possible for rotational forces in particular, and more particularly rotational friction values, to be determined or ascertained better than in particular without the use of a holding robot or based only on a simulation environment.
- the exertion of the force in particular by means of the holding robot, comprises a successive increase in the force in predetermined steps, in particular until the gripping robot loses the gripped object and/or until a, in particular predetermined, maximum force is exceeded.
- the exertion of the force comprises a (numerical) measurement of the exerted force.
- determining real gripping data and/or real holding data comprises recording the object using a recording device.
- recording the object comprises determining a pose of the object, in particular over time, and further comprises in particular localizing the gripped object, in particular in the gripper (in-hand localization), and/or tracking the object, in particular as long as it is gripped.
- at least one start position of the object, in particular a start frame, and one end position of the object, in particular an end frame can be used for a cost function.
- this can advantageously make it possible for the parameter estimation for the optimization to be or will be improved, in particular because the trajectory of the object contains more information than, in particular, a gripping success variable that indicates or describes the success or failure of the grip.
- a movement of the object can be approximated via the end position of the holding robot and in particular can be included in the cost function.
- this advantageously makes it possible to obtain information about the gripping process that goes beyond the information content of the gripping success, in particular can or do offer an improved cost function.
- a method for controlling a gripping robot comprises determining control data based on the optimized parameters according to an embodiment described herein, in particular for robot-assisted gripping, further in particular for a robot-assisted gripping process. In one embodiment, the method comprises controlling and/or moving the gripping robot based on the optimized control data.
- a movement and/or control of the robot can first be optimized in a simulation environment and then transferred to the robot, in particular in order to grip an object to be gripped better and/or more quickly. Furthermore, in one embodiment, this makes it possible that the grip, in particular a closing force of the gripper fingers or the like, can be used in a more optimized manner.
- embodiments of a method described herein are applicable or transferable to applications with multiple objects, in particular applications with multiple objects to be gripped in a container, provided that they are technically reasonable and/or applicable.
- the parameters determined for exposed objects can be transferred, in particular applied, to a gripping process with multiple objects in a container, and further, in particular based on the optimized parameters, control data can be determined for a gripping robot that is intended to grip or grips at least one object from a plurality of objects, in particular those arranged in a container.
- a system for operating and/or monitoring at least one robot.
- the system has a gripping robot and means for determining several, in particular collision-free and/or graspable, grip positions, in particular a grip sampler.
- the system and/or its means have means for selecting one of the determined grip positions, in particular a processing unit that is set up to select one of the determined grip positions.
- the system and/or its means have means for gripping the object.
- the system and/or its means have means for storing the gripping success, in particular a processing unit and/or in particular a memory, in particular in data connection with the processing unit.
- the system has means for determining real gripping data and/or means for determining real holding data, in particular at least one sensor that is set up to detect at least one parameter relevant to the real gripping data and/or to detect a parameter relevant to the real holding data.
- the system has means for simulating, in particular for replicating, at least one gripping process, in particular grip, of a gripping robot in a simulation environment.
- the system has means for data-based optimization of parameters, in particular of the simulation environment, in particular a processing unit.
- the system has a gripping robot and a holding robot.
- the system has means for determining a holding grip position, in particular a processing unit.
- the system, in particular the holding robot has means for gripping, in particular holding, the holding grip position.
- the system, in particular the holding robot has means for exerting a force on the object.
- the system has a recording device.
- a recording device as described herein particularly preferably comprises a recording device for recording digital and/or two-dimensional, in particular three-dimensional, images, and can in particular have at least one 2D camera, 3D camera and/or at least two spatially spaced cameras and/or at least one scanner, preferably for three-dimensional scanning.
- the recording device is set up to record a point cloud and/or color information, preferably a three-dimensional point cloud, more particularly a point cloud with color information, in particular associated with the points of the point cloud.
- a three-dimensional point cloud and/or color information recorded using a recording device is referred to as a frame or image (recorded using the recording device), which in one embodiment is generally a three-dimensional image and/or an image with color information.
- the receiving device is arranged on at least one of the robots. In one embodiment, the receiving device is alternatively or additionally arranged remotely from the robot, in particular such that the receiving device can receive, in particular track, an object to be gripped and/or a gripped object.
- a system and/or means in the sense of the present invention can be designed in terms of hardware and/or software, in particular at least one, preferably data- or signal-connected, especially digital, processing unit, especially microprocessor unit (CPU), graphics card (GPU) or the like, and/or a or multiple programs or program modules.
- the processing unit can be designed to process commands that are implemented as a program stored in a storage system, to detect input signals from a data bus and/or to output output signals to a data bus.
- a storage system can have one or more, in particular different, storage media, in particular optical, magnetic, solid-state and/or other non-volatile media.
- the program can be designed in such a way that it embodies or is capable of carrying out the methods described here, so that the processing unit can carry out the steps of such methods and thus in particular can operate or monitor the robot.
- a computer program product can have, in particular be, a storage medium, in particular a computer-readable and/or non-volatile one, for storing a program or instructions or with a program or instructions stored thereon.
- execution of this program or these instructions by a system or a controller, in particular a computer or an arrangement of several computers causes the system or the controller, in particular the computer(s), to carry out a method described here or one or more of its steps, or the program or the instructions are set up for this purpose.
- one or more, in particular all, steps of the method are carried out completely or partially automatically, in particular by the controller or its means.
- Fig. 1 A system according to an embodiment of the present invention
- Fig. 2 a system according to an alternative or additional embodiment
- Fig. 3 schematically a block diagram of a method according to an embodiment.
- Fig. 1 schematically shows system 1 with a gripping robot 2, which has a gripper 3 for gripping an object 5 to be gripped.
- the object 5 to be gripped is shown on a schematic worktop 6 of the system 1, with a single object 5 to be gripped being shown with solid lines.
- the system 1 is set up for gripping several objects 5, 5' (shown in dashed lines) in a container (not shown), in particular to carry out a method described herein.
- the system 1 can have a receiving device 8 which, as shown in dashed lines in Figure 1, is not arranged on the robot 2.
- the receiving device can be arranged on the robot 2, in particular on a flange of the robot 2.
- the system in Figure 1 has a processing unit 7 which is in data connection with the robot 2 and is set up in particular to control or monitor the robot 2.
- the robot 2 is further configured to grip the object 5 to be gripped based on a determined grip position. If the gripping process of the robot 2 is repeated and the gripping success of the grip position is recorded, the gripping sequence can be ordered according to the grip position and/or the pose, in particular position, of the object and, in particular, a sorting of the grip positions according to gripping success can be derived from this recording. For this purpose, in particular the grip position that has been gripped the least (so far) can be selected.
- data in particular on the gripping success of possible grip positions, which are or were determined in particular by means of a grip sampler, can be determined and stored.
- This data can be used in particular for a simulation of the system 1 in a simulation environment, wherein the system 1 in the simulation environment has, at least essentially, the components of the real system 1.
- an optimization of the parameters in the simulation environment can be achieved, in particular based on the data determined in reality, in particular real gripping data.
- Fig. 2 shows a schematic view of a system 1 with a holding robot 10. Furthermore, in Fig. 2, a robot 2 is shown which has gripped an object 5 to be gripped. Fig. 2 shows, indicated in dashed lines, comparable to Fig. 1, a receiving device 8 and also a processing unit 7, which is data-connected to the robot 2 and in particular to the holding robot 10 (also shown in dashed lines).
- the holding robot 10 is shown in Figure 2 in such a way that it has gripped a determined holding grip position and is holding the object already gripped by the gripping robot in the opposite direction to the gripping direction of the gripping robot 2.
- the holding robot 10 can compensate for gravity, in particular in the case of heavy and/or large objects.
- arrows also indicate that the holding robot 10 can apply a force to the object 5, in particular successively, which acts against a force exerted by the robot 2.
- a force can be rotational (opposite the rotational force of the robot 2), and in particular can be gradually increased until the robot 2 loses the object or drops it.
- values for parameterizing the simulation environment or the simulation of the grip can be derived from the maximum force used, and in particular these values can be transferred to the simulation. This is indicated in Figure 2 by the data connections in dashed lines to the processing unit 7.
- the gripped object 5 can be tracked by a recording device 8 during the process or method described above, in particular a trajectory of the object can be recorded, in some embodiments in particular continuously and/or in time steps.
- the recording device 8 can, as indicated in Figure 2 by the dashed lines, be attached externally or not be arranged on at least one of the robots 2, 10, or in some embodiments can be arranged on a flange of at least one robot 2, 10.
- the system 1 shown in Figure 2 can then be constructed in the simulation environment, at least essentially, in the same way, so that a simulated (held) grip on an object can be or is simulated to the grip on the object in reality, in particular in embodiments is repeated until the simulated grip resembles the real grip, at least essentially (or within predetermined limits for an accuracy of reproduction).
- FIG 3 shows a schematic block diagram of a method 30.
- the method has a step S1 with determining data (in reality).
- real gripping data S10 can be determined and/or real holding data S20 can be determined.
- the determination of real gripping data S10 includes in particular a determination of gripping positions on the object 5 to be grasped, shown with S12, wherein in Embodiments which can be preceded by a randomized placement of the object to be gripped.
- S16 in Figure 3 relates in particular to gripping the object 5 based on the grip position selected in S14.
- S18 schematically represents a storage of the gripping success for the selected grip position, in particular in a database or a memory. These steps can be repeated, as shown in particular by the dashed arrow.
- real gripping data can also be determined independently and an optimization, in particular solely based on the stored data on the gripping success, can be used to improve or optimize the grip sampler.
- S20 schematically shows a determination of real holding data.
- the determination of real holding data S20 comprises determining a holding grip position S22 on an object 5 gripped by a gripping robot.
- the grip position of the holding robot 10 is arranged such that, in one embodiment, a force can be applied to the object that is opposite to a force on the object 5 that is or is applied by the gripping robot 2.
- a gripping S24 follows at the determined holding grip position by the holding robot 10 in particular. This is followed, as shown by way of example in Figure 3, by exerting a force S26, in particular on the object 5, in the opposite direction to a force of the gripping robot 2 on the object 5.
- the determination of real holding data S20 can follow the gripping of the object S16 or the storage S18 of the determination of real gripping data S10, as indicated in particular by the dashed arrow between S18 and S20.
- Figure 3 shows a simulation S30 of at least one of the previous or above-described (real) gripping processes.
- simulation S30 an attempt is made in one embodiment to reproduce the real gripping process, in particular as closely as possible, within a simulation environment.
- S32 in Figure 3 shows an example of an optimization of the parameters.
- the optimization S32 is based on the previously determined real gripping data and/or the determined real holding data.
- the method as shown in dashed lines, can comprise a step of controlling, moving and/or monitoring S40 a robot 2, 10, in particular during gripping, based on the determined optimized parameters, which are transmitted for this purpose in one embodiment in control data for the robot 2, 10.
Landscapes
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Manipulator (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022212198.8A DE102022212198B4 (de) | 2022-11-16 | 2022-11-16 | Anpassung einer Greifsimulation durch Parameteridentifikation in der realen Welt |
| PCT/EP2023/079212 WO2024104707A1 (de) | 2022-11-16 | 2023-10-20 | Anpassung einer greifsimulation durch parameteridentifikation in der realen welt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4619201A1 true EP4619201A1 (de) | 2025-09-24 |
Family
ID=88511575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23793796.6A Pending EP4619201A1 (de) | 2022-11-16 | 2023-10-20 | Anpassung einer greifsimulation durch parameteridentifikation in der realen welt |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4619201A1 (de) |
| CN (1) | CN120303088A (de) |
| DE (1) | DE102022212198B4 (de) |
| WO (1) | WO2024104707A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120941313B (zh) * | 2025-10-16 | 2025-12-09 | 杭州临安制钳有限公司 | 一种基于视觉定位的水泵钳夹持辅助方法及系统 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6457421B2 (ja) * | 2016-04-04 | 2019-01-23 | ファナック株式会社 | シミュレーション結果を利用して学習を行う機械学習装置,機械システム,製造システムおよび機械学習方法 |
| JP6846949B2 (ja) * | 2017-03-03 | 2021-03-24 | 株式会社キーエンス | ロボットシミュレーション装置、ロボットシミュレーション方法、ロボットシミュレーションプログラム及びコンピュータで読み取り可能な記録媒体並びに記録した機器 |
| DE202018103922U1 (de) * | 2018-07-09 | 2018-08-06 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Greifsystem als intelligentes Sensor-Aktor-System |
| DE102019121889B3 (de) * | 2019-08-14 | 2020-11-19 | Robominds GmbH | Automatisierungssystem und Verfahren zur Handhabung von Produkten |
| US20210122045A1 (en) * | 2019-10-24 | 2021-04-29 | Nvidia Corporation | In-hand object pose tracking |
| DE102020127508B4 (de) * | 2019-10-24 | 2022-09-08 | Nvidia Corporation | Posenverfolgung von Objekten in der Hand |
| WO2021124445A1 (ja) * | 2019-12-17 | 2021-06-24 | 三菱電機株式会社 | 情報処理装置、ワーク認識装置およびワーク取り出し装置 |
| DE102020103852B4 (de) * | 2020-02-14 | 2022-06-15 | Franka Emika Gmbh | Erzeugen und Optimieren eines Steuerprogramms für einen Robotermanipulator |
-
2022
- 2022-11-16 DE DE102022212198.8A patent/DE102022212198B4/de active Active
-
2023
- 2023-10-20 EP EP23793796.6A patent/EP4619201A1/de active Pending
- 2023-10-20 WO PCT/EP2023/079212 patent/WO2024104707A1/de not_active Ceased
- 2023-10-20 CN CN202380079454.XA patent/CN120303088A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN120303088A (zh) | 2025-07-11 |
| DE102022212198B4 (de) | 2025-07-10 |
| WO2024104707A1 (de) | 2024-05-23 |
| DE102022212198A1 (de) | 2024-05-16 |
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