EP4633875A1 - Betreiben eines roboters mit greifer - Google Patents
Betreiben eines roboters mit greiferInfo
- Publication number
- EP4633875A1 EP4633875A1 EP23808744.9A EP23808744A EP4633875A1 EP 4633875 A1 EP4633875 A1 EP 4633875A1 EP 23808744 A EP23808744 A EP 23808744A EP 4633875 A1 EP4633875 A1 EP 4633875A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gripper
- robot
- determined
- pose
- basis
- 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
- B25J9/1694—Program controls characterised by use of sensors other than normal servo-feedback from position, speed or acceleration sensors, perception control, multi-sensor controlled systems, sensor fusion
- B25J9/1697—Vision controlled 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
-
- 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
- B25J9/1669—Program controls characterised by programming, planning systems for manipulators characterised by special application, e.g. multi-arm co-operation, assembly, grasping
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
- G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
- G06T7/74—Determining position or orientation of objects or cameras using feature-based methods involving reference images or patches
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20081—Training; Learning
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20084—Artificial neural networks [ANN]
Definitions
- the present invention relates to a method and a system for operating a robot that guides a gripper, as well as a computer program or a system for operating the robot.
- the object of the present invention is to improve an operation of a robot that guides a gripper.
- Claims 7, 8 represent a system or computer program or.
- a robot has a robot arm, in particular can be such. Additionally or alternatively, the robot, in particular the robot arm, in one embodiment has at least three, in particular at least six, in one embodiment at least seven, joints or (movement) axes, in a further development at least three, in particular at least six, in one embodiment at least seven, rotary joints or rotary axes.
- the robot guides or carries a gripper, in a further development a finger gripper with one or more adjustable fingers, a suction gripper, a magnetic, preferably electromagnetic, gripper or the like.
- the gripper is arranged on the robot, in particular the robot arm, preferably an end flange of the robot, in particular the robot arm, preferably in a manner that is preferably non-destructively removable or replaceable.
- a method for operating the robot that guides the gripper comprises the step of: determining a pose of the gripper based on a posture of the robot.
- a pose comprises a one-, two- or three-dimensional position and/or a one-, two- or three-dimensional orientation, a pose of the gripper determined on the basis of a position of the robot in one embodiment, a one-, two- or three-dimensional position and/or a one-, two- or three-dimensional orientation of the gripper relative to a robot-fixed reference system, in one embodiment relative to a base of the robot, in particular the robot arm, and/or relative to an environment of the robot, a pose of a load held by the gripper determined here in one embodiment, a one-, two- or three-dimensional position and/or a one-, two- or three-dimensional orientation of the load relative to the gripper, relative to a robot-fixed reference system, in one embodiment relative to a base of the robot, in particular the robot arm,
- a position of the robot includes the positions of the joints or axes of the robot, preferably recorded or actual positions and/or commanded or target positions of the joints or axes of the robot.
- a pose of the gripper can be determined using forward kinematics or transformation based on the positions of the joints of the robot.
- the method comprises the further step of determining one or more virtual boundary contours in an image of at least a part of the gripper in or with an environment of the gripper (in each case) on the basis of the determined pose of the gripper, wherein the or one or more of the boundary contours each preferably have the pose of the gripper or a predetermined translational and/or rotational offset with respect to the pose of the gripper.
- the method also comprises the step of determining this image; in another embodiment, the determined image can also be provided by an external instance.
- the image comprises a three-dimensional point cloud and/or a camera image and/or is or will be determined using a 3D recording device, in particular at least one 3D camera, at least two spatially spaced stereographic cameras, at least one 3D scanner or the like.
- data from the image indicate three-dimensional positions of points on the gripper or its surroundings, preferably points on the surface of the gripper or its surroundings.
- the method comprises the further steps:
- One embodiment of the present invention is based on the realization that a pose of the robot-guided gripper can be determined based on a known position of the robot, and the idea based on this to exploit this in order to better, in particular more quickly and/or more precisely, determine a pose of a load held by the gripper based on an image of the gripper with the load in or with its surroundings, preferably by at least part of the data of the image initially being sorted out or filtered out as not being assigned to the load based on a pose of the gripper and the pose of the load is only determined on the basis of the (data of the) image reduced in this way.
- the or one of the virtual boundary contour(s) determined on the basis of the determined pose of the gripper is a gripper boundary contour for the gripper in the image, which is determined on the basis of a data model of the gripper, and the classification of data comprises sorting out or eliminating or filtering out data assigned to the gripper in the image on the basis of this gripper boundary contour, in particular data which or whose position lies within the gripper boundary contour.
- the data model of the gripper is or will be determined in one embodiment on the basis of design data, in particular CAD data, of the gripper or can include such data.
- the gripper boundary contour for the gripper corresponds in one embodiment to a, preferably simplified, (virtual) representation of the gripper in the illustration and/or is determined in one embodiment in such a way that, within the scope of a tolerance caused by the simplification, it at least partially corresponds to an outer contour of the gripper, in particular a theoretical one or one based on the data model, preferably within the actual Outer contour.
- the gripper boundary contour changes as a result of a change in the position of the gripper, for example one or more fingers of the gripper, or the gripper boundary contour for the gripper in the illustration is determined (also) on the basis of a commanded or detected pose of members of the gripper relative to one another (gripper position).
- the or a (further) virtual boundary contour(s) determined on the basis of the determined pose of the gripper is an environmental boundary contour for an environment of the gripper in the image, which is determined on the basis of dimensions, in particular theoretical or target dimensions or real or recorded dimensions, of the gripper and/or dimensions, in particular theoretical or target dimensions or real or recorded dimensions, of a load held by the gripper, preferably the load whose pose is determined, and the classification of data comprises sorting out or eliminating or filtering out of an environment of the gripper (which in one embodiment comprises the robot and/or a (common) environment of the gripper and robot, in particular a background or objects other than the gripper, the robot (and the load)) associated data of the image on the basis of this environmental boundary contour, in particular data which or whose position is outside the environmental boundary contour.
- an environment of the gripper which in one embodiment comprises the robot and/or a (common) environment of the gripper and robot, in particular a background or objects other than the gripper, the robot (and the load)
- the environmental boundary contour for an environment of the gripper has, in one embodiment, a virtual, preferably convex, shell around the load, in a preferred embodiment in the form of an ellipsoid, in particular a sphere, or of a cuboid, and/or is determined in such a way that the load lies completely within the surrounding boundary contour.
- the classification of image data based on the determined gripper boundary contour and surrounding boundary contour takes place in several stages, in that data from the image is first reduced by sorting based on the surrounding boundary contour and then this reduced data is reduced (even) further by sorting based on the gripper boundary contour.
- this has the advantage that a considerable data reduction can often already be achieved by sorting based on the surrounding boundary contour.
- the surrounding boundary contour can have a simpler geometric shape (than the gripper boundary contour), so that the corresponding sorting can take place more quickly, more precisely and/or more reliably, and the subsequent sorting based on the gripper boundary contour can therefore also be improved.
- the classification of image data is carried out on the basis of the determined gripper boundary contour and surrounding boundary contour by first reducing image data by sorting based on the gripper boundary contour and then (even) further reducing these reduced data by sorting based on the surrounding boundary contour.
- the classification of image data based on the determined gripper boundary contour and surrounding boundary contour is carried out in parallel, in a further development in which data that lies outside the surrounding boundary contour or whose position lies within the gripper boundary contour are sorted out in one step. This can speed up the process.
- the data reduced by sorting based on the gripper boundary contour and/or based on the surrounding boundary contour, which essentially contain data associated with the load are filtered (further or after) before or to determine the pose of the load. In one embodiment, this allows the pose to be determined even better, in particular more quickly, more precisely and/or more reliably.
- the data reduced by sorting based on the gripper boundary contour and/or based on the surrounding boundary contour, which accordingly essentially contain data associated with the load are converted into a depth image, if necessary after further data processing, for example the post-filtering mentioned above, and based on this a mask is determined which can advantageously be used to segment the load in one or more 2D images.
- the pose of the load is determined based on this segmentation on the basis of the classified or reduced data of the image. In one embodiment, this allows the segmentation of the load in a 2D image or the determination of the pose to be improved, in particular carried out more quickly, more precisely and/or more reliably.
- the pose of the load held by the gripper is determined (also) based on the classified data.
- controlling the robot and/or gripper based on the determined pose of the load includes transporting and/or releasing the load with the robot-guided gripper.
- controlling the robot and/or gripper based on the determined pose of the load comprises monitoring and/or correcting a pose of the load, particularly preferably during gripping, Transporting and/or releasing the load with the robot-guided gripper.
- the pose of the load preferably relative to the gripper, is checked once or several times or compared with a reference pose, preferably while the robot is transporting the load.
- an incorrect pose or an undesirable change in the pose of the load is determined or recognized, this is responded to in one embodiment by issuing a warning and/or controlling a movement of the robot and/or gripper accordingly, for example adjusting the handle, setting down and re-picking up the load, adjusting the position of the robot for or when releasing the load or the like.
- a system in particular hardware and/or software, in particular program technology, is set up to carry out a method described here and/or has:
- Means for controlling the robot and/or gripper based on the determined pose of the load are provided.
- the system or its means comprises: means for converting the image data reduced by sorting based on the gripper boundary contour and based on the surrounding boundary contour into a depth image, means for determining at least one mask based on this depth image, and means for segmenting the load in a 2D image based on this mask.
- 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, particularly digital, processing unit, particularly microprocessor unit (CPU), graphics card (GPU) or the like, and/or one or more 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, particularly different, storage media, particularly 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 control the robot and/or gripper.
- 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 fully or partially computer-implemented or one or more, in particular all, steps of the method are fully or partially automated, in particular by the system or its means.
- the system comprises the robot and/or gripper.
- Fig. 1 a system for operating a robot that guides a gripper according to an embodiment of the present invention
- Fig. 2 a method for operating the robot according to an embodiment of the present invention.
- Fig. 1 shows a system for operating a six-axis robot 10, the (joint) position(s) of which are specified by joint coordinates qi, ..., q 6 , and on the end flange 11 of which a gripper 2 with a load 3 held by it is arranged.
- a robot controller 20 communicates with the robot 10 and a recording device 30 for recording an image of at least a part of the gripper 2 in its environment.
- a diameter and a (center) position of a sphere S are determined in such a way that the held load 3 can be arranged completely within the sphere with a predetermined tolerance.
- the position [x, y, z] of the center of the sphere S can be determined as the position of the gripper determined by the pose of the gripper plus a target offset between the gripper base and the load center, and the diameter of the sphere S can be chosen to be large enough that the load is (still) completely within the sphere S even with the maximum possible deviation from this target offset (with the load (still) held).
- the position [x, y, z] of the center of the sphere S can be the position of the gripper itself determined by the pose of the gripper. determined and the diameter of the sphere S must be chosen accordingly larger so that the held load is always completely within the sphere S.
- a step S30 those data of the image that lie outside the sphere S are sorted out or eliminated, for example data assigned to a storage area 4.
- This corresponds to a sorting out of data assigned to the environment of the gripper, in particular the robot 10 and a common environment 4 of the gripper and robot, on the basis of an environment boundary contour in the form of the sphere S.
- a gripper boundary contour G for the gripper 2 in the image is determined, which lies slightly within the outer contour of the gripper 2 in the pose determined in step S10.
- step S50 those of the image data remaining after step S30 that lie within the gripper boundary contour G are eliminated. This corresponds to a sorting out of data assigned to the gripper 2 on the basis of the gripper boundary contour G determined in step S40.
- step S30 first on the basis of the surrounding boundary contour (step S30) and then on the basis of the gripper boundary contour (step S50), the remaining data of the image are classified as data potentially assigned to load 3.
- step S60 the pose of the load 3 relative to the gripper 2 is determined on the basis of the data classified in this way in a manner known per se, for example by recognizing or matching patterns or the like.
- the data of the image reduced by sorting based on the gripper boundary contour and based on the surrounding boundary contour are converted into a depth image, preferably after post-filtering, one or more masks are determined based on this and these (each) are used to segment the load in a 2D image, whereby this segmentation or segmented 2D image(s) can be used in particular to determine the pose.
- a step S70 the robot 10 and/or gripper 2 is controlled on the basis of the pose of the load 3 determined in this way, in particular during transport of the load 3, its pose relative to the gripper 2 is compared or checked with a reference pose and, in the event of an impermissible deviation, for example slipping, is corrected accordingly.
- the elimination of data associated with the gripper or the environment from the image can be improved, in particular carried out more quickly.
- this can advantageously reduce errors in determining the pose of the load, which are based on parts of the gripper or the environment being mistakenly confused with parts of the load.
- the determination of the actual pose of the load 3 on the basis of the (classified or reduced data of the) image can be improved, in particular carried out more quickly.
Landscapes
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Manipulator (AREA)
- Image Analysis (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022213568.7A DE102022213568B3 (de) | 2022-12-13 | 2022-12-13 | Kalibrieren einer Steuerung |
| DE102022213562.8A DE102022213562A1 (de) | 2022-12-13 | 2022-12-13 | Greifen mit Verpackungsmaterial |
| DE102022213555.5A DE102022213555A1 (de) | 2022-12-13 | 2022-12-13 | Objektlagedetektion mit automatisierter Merkmalsextraktion und/oder Merkmalszuordnung |
| DE102022213557.1A DE102022213557B3 (de) | 2022-12-13 | 2022-12-13 | Betreiben eines Roboters mit Greifer |
| PCT/EP2023/081830 WO2024125919A1 (de) | 2022-12-13 | 2023-11-15 | Betreiben eines roboters mit greifer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4633875A1 true EP4633875A1 (de) | 2025-10-22 |
Family
ID=88838801
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23809139.1A Pending EP4634861A1 (de) | 2022-12-13 | 2023-11-15 | Objektlagedetektion mit automatisierter merkmalsextraktion und/oder merkmalszuordnung |
| EP23808746.4A Pending EP4633877A1 (de) | 2022-12-13 | 2023-11-15 | Greifen mit verpackungsmaterial |
| EP23808745.6A Pending EP4633876A1 (de) | 2022-12-13 | 2023-11-15 | Kalibrieren einer greifersteuerung |
| EP23808744.9A Pending EP4633875A1 (de) | 2022-12-13 | 2023-11-15 | Betreiben eines roboters mit greifer |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23809139.1A Pending EP4634861A1 (de) | 2022-12-13 | 2023-11-15 | Objektlagedetektion mit automatisierter merkmalsextraktion und/oder merkmalszuordnung |
| EP23808746.4A Pending EP4633877A1 (de) | 2022-12-13 | 2023-11-15 | Greifen mit verpackungsmaterial |
| EP23808745.6A Pending EP4633876A1 (de) | 2022-12-13 | 2023-11-15 | Kalibrieren einer greifersteuerung |
Country Status (3)
| Country | Link |
|---|---|
| EP (4) | EP4634861A1 (de) |
| CN (4) | CN120359107A (de) |
| WO (4) | WO2024125918A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015089575A (ja) * | 2013-11-05 | 2015-05-11 | セイコーエプソン株式会社 | ロボット、制御装置、ロボットシステム及び制御方法 |
| US11407589B2 (en) * | 2018-10-25 | 2022-08-09 | Berkshire Grey Operating Company, Inc. | Systems and methods for learning to extrapolate optimal object routing and handling parameters |
| WO2020091846A1 (en) * | 2018-10-30 | 2020-05-07 | Mujin, Inc. | Automated package registration systems, devices, and methods |
| DE102021109036A1 (de) * | 2021-04-12 | 2022-10-13 | Robert Bosch Gesellschaft mit beschränkter Haftung | Vorrichtung und verfahren zum lokalisieren von stellen von objekten aus kamerabildern der objekte |
-
2023
- 2023-11-15 WO PCT/EP2023/081829 patent/WO2024125918A1/de not_active Ceased
- 2023-11-15 CN CN202380085634.9A patent/CN120359107A/zh active Pending
- 2023-11-15 WO PCT/EP2023/081831 patent/WO2024125920A1/de not_active Ceased
- 2023-11-15 CN CN202380085573.6A patent/CN120344356A/zh active Pending
- 2023-11-15 WO PCT/EP2023/081830 patent/WO2024125919A1/de not_active Ceased
- 2023-11-15 WO PCT/EP2023/081832 patent/WO2024125921A1/de not_active Ceased
- 2023-11-15 CN CN202380085574.0A patent/CN120344357A/zh active Pending
- 2023-11-15 EP EP23809139.1A patent/EP4634861A1/de active Pending
- 2023-11-15 EP EP23808746.4A patent/EP4633877A1/de active Pending
- 2023-11-15 CN CN202380085633.4A patent/CN120359544A/zh active Pending
- 2023-11-15 EP EP23808745.6A patent/EP4633876A1/de active Pending
- 2023-11-15 EP EP23808744.9A patent/EP4633875A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4633877A1 (de) | 2025-10-22 |
| WO2024125919A1 (de) | 2024-06-20 |
| CN120359544A (zh) | 2025-07-22 |
| EP4634861A1 (de) | 2025-10-22 |
| WO2024125920A1 (de) | 2024-06-20 |
| CN120344356A (zh) | 2025-07-18 |
| WO2024125921A1 (de) | 2024-06-20 |
| EP4633876A1 (de) | 2025-10-22 |
| CN120344357A (zh) | 2025-07-18 |
| CN120359107A (zh) | 2025-07-22 |
| WO2024125918A1 (de) | 2024-06-20 |
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