EP4577382A1 - Planung von roboterbahnen und robotersteuerung - Google Patents
Planung von roboterbahnen und robotersteuerungInfo
- Publication number
- EP4577382A1 EP4577382A1 EP23744717.2A EP23744717A EP4577382A1 EP 4577382 A1 EP4577382 A1 EP 4577382A1 EP 23744717 A EP23744717 A EP 23744717A EP 4577382 A1 EP4577382 A1 EP 4577382A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- path
- robot
- sections
- partial
- planned
- 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
- B25J9/1664—Program controls characterised by programming, planning systems for manipulators characterised by motion, path, trajectory planning
- B25J9/1666—Avoiding collision or forbidden zones
-
- 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
- G05B2219/40519—Motion, trajectory planning
Definitions
- a pose, in particular a pose of a robot-fixed reference in one embodiment in the present case defines a one-, two- or three-dimensional position and / or a one-, two- or three-dimensional orientation (of the robot-fixed reference), a robot-fixed reference can in the present case in particular an end effector, end flange or end member or TCP of the robot or be stationary thereto.
- a method for planning a path of a robot for carrying out an application (with the robot;
- Robot application or “robot track”) the steps: - Splitting the application into at least two consecutive sections, in one embodiment specifying a transition area, in a further development of a transition pose of the robot-fixed reference or transition position of the robot, between the two successive sections, in one embodiment dividing the application into at least three consecutive sections, in particular specifying a transition area, in a further development, a transition pose of the robot-fixed reference or transition position of the robot, between two successive sections;
- Specifying a secondary condition for one section of the at least two consecutive sections and a different secondary condition for the other section of the at least two consecutive sections in one embodiment specifying a secondary condition for each of the at least three consecutive sections, preferably at least two of these secondary conditions are different from each other;
- the robot has at least three, in particular at least six, in one embodiment at least seven, (movement) axes or joints, in particular rotation axes or joints.
- the robot has a, in particular stationary or mobile, robot arm with at least three, in particular at least six, in one embodiment at least seven, (movement) axes or joints, in particular rotation axes or joints.
- the robot has a robot-fixed reference, which can in particular be an end effector, end flange or end member or TCP of the robot or stationary thereto, with the application poses, in particular a one-, two- or three-dimensional position and / or can include one-, two- or three-dimensional orientation of the robot-fixed reference, which the robot should approach or adopt with the robot-fixed reference for or when carrying out the application one after the other or successively.
- a robot-fixed reference which can in particular be an end effector, end flange or end member or TCP of the robot or stationary thereto, with the application poses, in particular a one-, two- or three-dimensional position and / or can include one-, two- or three-dimensional orientation of the robot-fixed reference, which the robot should approach or adopt with the robot-fixed reference for or when carrying out the application one after the other or successively.
- the present invention is particularly suitable for such robots due to their areas of application and kinematics.
- the application is divided into successive sections in one execution based on a user input or specification or a higher-level automatic application planning and/or on the basis of different work processes or goals for the individual application sections, for example transfer or transport processes or - sections, in particular from and/or to work stations and/or from and/or to conveyor or storage stations, on the one hand, and (processing) processes or sections on the other hand, or the like.
- two successive sections each border one another in a transition region, in a further development in a transition pose of the robot-fixed reference or transition position of the robot, whereby in a further development these transition region(s) are or are predetermined in one embodiment when or to divide the application into sections and/or based on a user input or specification or a higher-level automatic application planning.
- One or more of the secondary conditions can (each) avoid collisions, (taking) one or more predetermined poses of the robot-fixed reference and / or an optimization of a travel time, a load, in particular stress and / or acceleration, and / or an energy requirement of the robot to carry out the corresponding section of the application or the like and / or represent one- or multi-dimensional secondary conditions for an optimization method or be specified as such.
- the priority (levels) are assigned to the secondary conditions in one version based on a user input or specification or automatically, in a further development based on a predetermined hierarchy of secondary conditions or the like.
- Priority (levels) can also be assigned by default, so that, for example, by specifying a (higher or lower) priority (level) for one of two secondary conditions, this secondary condition is or is prioritized higher or lower than the other, without that a priority (level) must be explicitly assigned to this other secondary condition. Accordingly, for example, by specifying a higher and a lower priority (level) for two of three additional conditions Additional conditions can be prioritized higher or lower than the third additional condition, without a priority (level) having to be explicitly assigned to this third additional condition.
- the method comprises the steps:
- second-priority partial path to carry out that section of the at least two, possibly at least three, sections for which the secondary condition is specified, to which the (next) lower priority is assigned, taking this secondary condition into account and based on the previously planned highest priority partial path, in an embodiment based on or using a pose of the robot-fixed reference and / or a position of the robot at one or that end of the previously planned partial path, that of the partial path currently being planned is facing, preferably in such a way that both partial webs have this pose or position in their transition area;
- One embodiment of the present invention is based on the idea of prioritizing the secondary conditions to be met in sections, then (each) planning a partial path for a section with the higher priority secondary condition and using this already planned partial path in the subsequent planning of the partial path for the section with the lower priority secondary condition must be taken into account.
- a pose of the robot-fixed reference and/or a position of the robot at that end of the already planned of these two partial paths, which faces the one of the two partial paths that is still to be planned is used when planning this partial path that is still to be planned, in an execution as a pose or position of this partial path to be planned.
- the planning of the partial path that is still to be planned can be improved, in particular in one embodiment a search space of an optimization method can advantageously be significantly reduced and / or the partial path that is still to be planned can be planned in such a way that the already planned partial path , in particular directly, is executable.
- At least one of the sections of the application has a processing, inspection and/or measuring section for robot-assisted processing and/or inspecting and/or measuring a workpiece, in particular for holding and/or moving a robot-guided processing, inspection and/or measuring section. or measuring tool while it is machining or inspecting or measuring a workpiece, or for holding and/or moving a robot-guided workpiece while it is being handled by a machining, inspection and/or measuring tool is processed or inspected or measured, and the partial path planned to carry out this section is a processing, inspection and / or measuring path of the robot, can in particular be such.
- processing refers in particular to material-removing processing such as grinding, sawing, drilling or the like, material-applying processing such as painting, coating or the like, connecting processing such as welding, gluing, riveting or the like, and separating processing such as sawing or the like, understood.
- measuring is understood to mean, in particular, measuring.
- At least one of the sections of the application has an approach section for approaching a processing, inspection and / or measuring path or a conveyor or storage point and the partial path planned to carry out this section has an approach path of the robot, can in particular a (e) be such.
- the present invention is particularly advantageous for such applications, in particular due to the additional conditions that often have to be taken into account.
- a method for controlling the robot comprises the steps of:
- the system or its means for planning a partial path includes an optimizer for planning the partial path using an optimization method.
- a system and/or a means in the sense of the present invention can be designed in terms of hardware and/or software, in particular at least one, preferably with a memory and/or bus system data or signal connected, in particular digital, processing, in particular microprocessor unit (CPU ), graphics card (GPU) or the like, and / or have 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 memory system, to detect input signals from a data bus and/or to deliver output signals to a data bus.
- one or more, in particular all, steps of the method are completely or partially implemented by computer or one or more, in particular all, steps of the method are carried out completely or partially automatically, in particular by the system or its means.
- FIG. 1 a method according to an embodiment of the present invention.
- Fig. 2 a system according to an embodiment of the present invention.
- Fig. 2 shows a system according to an embodiment of the present invention with a seven-axis robot (arm) 1 and a controller 2 for controlling the robot (arm) 1 or a path planning for it according to an embodiment of the present invention.
- the robot (arm) 1 should move with its TCP from a starting pose or position to a predetermined initial pose S of a processing, inspection and/or measuring path (“approach path”), and then move the TCP along a predetermined distance to a predetermined end pose E, and from there drive with its TCP into a target pose or position (“way lane”).
- Another secondary condition Ns should be met on the approach path, for example the initial pose S should be approached without collision and as quickly as possible.
- the application or path to be planned described above is first divided into several sections or partial paths in a step S10, in the example the approach or the approach path, the processing or inspecting or measuring or the processing, inspection and and/or measuring path and the departure or the departure path.
- the division can be carried out in particular on the basis of a user input or specification or a higher-level automatic application planning and can include specifying the transition areas between the individual partial paths, in one embodiment consisting of this.
- different secondary conditions are specified in a step S20, in the example the aforementioned secondary conditions Ns for the approach or the approach path, NSE for the processing or inspecting or measuring or the processing, inspection and/or or measuring path and NE for the departure or the departure path.
- the specification can in particular be based on a user input or specification or can be done automatically, for example based on an assignment of predetermined additional conditions to different application section or partial path types or the like.
- the secondary condition NSE for the processing, inspection and/or measuring path is assigned the highest priority t (level)
- the secondary condition NE for the exit lane is assigned the lowest priority t (level)
- the secondary condition Ns for the approach lane is assigned a medium priority t(level), which is lower than the highest priority t(level) assigned to the secondary condition NSE for the processing, inspection and/or measuring path and higher than the lowest priority t(level) assigned to the secondary condition NE for the exit lane .
- a step S40 the partial path is now planned whose secondary condition to be met during planning has been assigned the highest priority (level), in the above example the processing, inspection and/or measuring path.
- the search space for planning the approach path is significantly reduced by the position qs already determined in step S40.
- the (partial) path can be planned with little computing time and/or power and/or the risk can be reduced that the optimization method only finds local minima, in particular ending in such a dead end.
- the primary attempt is to comply with the highest-priority secondary condition NSE, and the lower-priority secondary condition Ns is (still) complied with to the extent that this is (still) possible by the higher-priority secondary condition NSE.
- a step S60 the partial path is then planned whose secondary condition to be adhered to in its planning has been assigned the next lower priority (level), in the above example the off-road lane.
- This planning is carried out in a manner known per se on the basis of the specified target pose or position and the robot (arm) position QE determined in step S40, taking into account the specified secondary condition NE using the same or a different optimization method and accordingly defines positions q of the robot ( arm)s 1 along the road.
- the roadway is planned so that it begins at or in the position QE determined in step S40.
- This also exemplifies the reduction of the search space for planning the roadway through the position QE already determined in step S40, so that in one embodiment the (partial) path is planned with less computing time and/or performance and/or the danger can be reduced so that the optimization method only finds local minima, in particular ending in such a dead end.
- the primary attempt is to comply with the highest-priority secondary condition NSE, then to (still) comply with the lower-priority secondary condition Ns to the extent that this is (still) possible by the higher-priority secondary condition NSE, and finally the even lower one prioritized secondary condition NE must (still) be adhered to as far as this is (still) possible through the higher-priority secondary conditions NSE, NS.
- the planning of the approach or departure lane could be omitted and/or the secondary condition Ns or NE for the approach or departure lane could be given higher priority than the secondary condition for the processing, inspection and/or Measuring track NSE.
- the approach path is then planned first instead of the processing, inspection and/or measuring path.
- This planning is then carried out in a manner known per se on the basis of the predetermined starting pose or position and the predetermined initial pose S, taking into account the predetermined secondary condition Ns using an optimization method and defines positions q of the robot (arm) 1 along the processing, inspection and and/or measuring path, in particular (s) a position qs in or for the initial pose S.
- a part of the secondary condition that only relates to the initial pose S is already taken into account, in the example the orientation specified for this of the TCP can be implemented.
- the redundancy that is (still) permitted or available from the perspective of the subsequent processing, inspection and/or measuring path is exploited here.
- the processing, inspection and/or measuring path is then planned in step S50.
- This planning is carried out in a manner known per se on the basis of the specified end pose E and the robot (arm) position qs determined in step S40, taking into account the specified secondary condition NSE using the same or a different optimization method and defines positions q of the robot (arm) 1 along the processing, inspection and/or measuring path, in particular a position QE in or for the end pose E.
- a robot position was determined by planning a partial path with a higher-priority secondary condition and this position was used when planning a partial path with a lower-priority secondary condition. It can be particularly advantageous to use this robot position determined in the higher-priority planning as the starting or end position in the lower-priority planning, i.e.
- the approach path for approaching the processing, inspection and processing positions in the higher-priority planning /or measuring path determined robot (arm) position qs or vice versa the processing, inspection and / or measuring path for moving on from the robot (arm) position qs determined during the higher priority planning of the approach path or the exit lane for moving on from the at Plan the robot (arm) position QE ZU determined for the higher priority planning of the processing, inspection and/or measuring path.
- the robot (arm) 1 of FIG. 1 could be arranged on a mobile platform between the end of the planned approach path and the start of the planned processing, inspection and/or measuring path a predetermined route is traveled. Then a robot (arm) position qs can first be determined for the prioritized planned processing, inspection and/or measuring path and the robot (arm) position qs to be approached on the approach path can be planned on this basis, compensating for the travel distance.
- a transition area between the approach path and the processing, inspection and/or measuring path includes the travel path.
Landscapes
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Manipulator (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022208769.0A DE102022208769B3 (de) | 2022-08-24 | 2022-08-24 | Roboterbahnplanung und -steuerung |
| PCT/EP2023/069746 WO2024041808A1 (de) | 2022-08-24 | 2023-07-17 | Planung von roboterbahnen und robotersteuerung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4577382A1 true EP4577382A1 (de) | 2025-07-02 |
Family
ID=87429314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23744717.2A Pending EP4577382A1 (de) | 2022-08-24 | 2023-07-17 | Planung von roboterbahnen und robotersteuerung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4577382A1 (de) |
| CN (1) | CN119768255A (de) |
| DE (1) | DE102022208769B3 (de) |
| WO (1) | WO2024041808A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011005513A1 (de) | 2011-03-14 | 2012-09-20 | Kuka Laboratories Gmbh | Roboter und Verfahren zum Betreiben eines Roboters |
| US9104192B2 (en) * | 2012-06-27 | 2015-08-11 | Mitsubishi Electric Research Laboratories, Inc. | System and method for controlling machines according to pattern of contours |
| JP6114361B1 (ja) * | 2015-11-02 | 2017-04-12 | ファナック株式会社 | オフラインのロボットプログラミング装置 |
| DE102017011130B4 (de) | 2017-12-01 | 2021-03-04 | Kuka Deutschland Gmbh | Verfahren und System zum Steuern eines Roboters |
| DE102017129665B3 (de) | 2017-12-12 | 2019-01-24 | Pilz Gmbh & Co. Kg | Kollisionsfreie Bewegungsplanung bei geschlossener Kinematik |
| IT201900021513A1 (it) * | 2019-11-19 | 2021-05-19 | Fondazione St Italiano Tecnologia | Metodo e dispositivo elettronico per controllare il movimento di un robot umanoide o di un braccio robotico utilizzando il numero minore di gradi di libertà necessari all’esecuzione di un compito e relativo supporto di memorizzazione leggibile da un elaboratore elettronico |
| DE102020201398B3 (de) | 2020-02-05 | 2021-04-01 | Kuka Deutschland Gmbh | Betreiben einer Applikation eines Robotersystems |
| DE102020206913B4 (de) | 2020-06-03 | 2022-12-22 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren und Vorrichtung zum Betreiben eines Roboters |
| US20220032461A1 (en) * | 2020-07-31 | 2022-02-03 | GrayMatter Robotics Inc. | Method to incorporate complex physical constraints in path-constrained trajectory planning for serial-link manipulator |
| DE102020214231A1 (de) | 2020-11-12 | 2022-05-12 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zum steuern einer robotervorrichtung und robotersteuereinrichtung |
-
2022
- 2022-08-24 DE DE102022208769.0A patent/DE102022208769B3/de active Active
-
2023
- 2023-07-17 EP EP23744717.2A patent/EP4577382A1/de active Pending
- 2023-07-17 CN CN202380061671.6A patent/CN119768255A/zh active Pending
- 2023-07-17 WO PCT/EP2023/069746 patent/WO2024041808A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022208769B3 (de) | 2023-11-09 |
| WO2024041808A1 (de) | 2024-02-29 |
| CN119768255A (zh) | 2025-04-04 |
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