EP3624998A1 - Robotersteuerung - Google Patents
RobotersteuerungInfo
- Publication number
- EP3624998A1 EP3624998A1 EP18722531.3A EP18722531A EP3624998A1 EP 3624998 A1 EP3624998 A1 EP 3624998A1 EP 18722531 A EP18722531 A EP 18722531A EP 3624998 A1 EP3624998 A1 EP 3624998A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- joint
- robot
- distance
- boundary
- induced movement
- 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.)
- Withdrawn
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
- B25J9/1628—Program controls characterised by the control loop
- B25J9/1633—Program controls characterised by the control loop compliant, force, torque control, e.g. combined with position 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
- B25J9/1628—Program controls characterised by the control loop
- B25J9/1643—Program controls characterised by the control loop redundant 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
- B25J9/1674—Program controls characterised by safety, monitoring, diagnostic
- B25J9/1676—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
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/42—Recording and playback systems, i.e. in which the program is recorded from a cycle of operations, e.g. the cycle of operations being manually controlled, after which this record is played back on the same machine
- G05B19/423—Teaching successive positions by walk-through, i.e. the tool head or end effector being grasped and guided directly, with or without servo-assistance, to follow a path
-
- 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
- G05B2219/40344—Configuration index, control, limits of joint movement
-
- 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
- G05B2219/40365—Configuration control, select other tasks by configuration of link positions
-
- 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
- G05B2219/40371—Control trajectory to avoid joint limit as well as obstacle collision
Definitions
- the present invention relates to a method and a system for controlling a robot as well as an arrangement with the system and a computer program product for carrying out the method.
- More progressive approaches are usually based on a force, in particular admittance control, in which the robot follows or tries to evade a joint force induced by a robot-guided force sensor or induced by a manual application of a robot element, in which case antiparallel force pairs or (rotational) moments are present for a more compact representation
- the object of the present invention is to improve a robot control.
- Claims 10 to 12 provide a system or computer program product
- a method for controlling a robot comprises the step of: detecting current positions of joints of the robot, in particular by means of joint position sensors, in particular
- the robot has at least three, in particular at least six, in particular at least seven joints, in particular rotary joints, or (motion, in particular rotary) axes; in particular, it can have an articulated robot arm, in particular be such.
- six or more joints can be beneficial in one embodiment
- the robot (arm) drives to actuate, in particular moving or adjusting the joints or (motion) axes, in particular electric, in particular servomotors.
- the method comprises the step of: actuating the joints by the drives of the robot on the basis of or in dependence on the detected actual joint positions, in particular with the proviso that at least one drive, hereinafter also referred to as
- a hand guide in one embodiment comprises a manual loading of one or more members and / or joints of the robot (arm) with an external force, in particular a manual movement of one or more members and / or
- a hand-guide-induced movement of a joint accordingly comprises in particular one, in particular direct or indirect, movement or adjustment of the joint or the axis as a result of or due to the manual guidance.
- the (limited) or drive supports one
- a drive more strongly supports hand gesture-induced motion by providing greater travel
- a support of a hand guidance induced movement of a joint by one or the (limited) drive comprises the specification of a same direction in this movement target joint position change or a (new) target joint position in the direction of this movement and
- the method includes the step of: actuating the joints by the drives of the robot based on the detected actual hinge positions, in particular with the proviso that the (limited) drive is the hand gesture induced movement supported by the articulated joint, if a distance between its (current) detected or
- Target joint position and a predetermined second boundary has a third value, in particular amount, and on the other hand less supported, if this distance has a fourth value, in particular amount, the, in particular amount, less than the third value is, and in addition the
- the third value may be the first value or different from the first value
- the fourth value may in one embodiment be the second value or from this
- the first and second boundaries thus limit an allowable movement or adjustment range of the joint on both sides.
- the first boundary may be an upper boundary and the second boundary may be a lower boundary or, conversely, the first boundary may be an upper boundary and the second boundary may be an upper boundary.
- the first and / or second is or is
- a mechanism of the robot can be reliably protected by changeable or
- the (limited) drive does not support the handguard induced movement of the joint actuated by it, if the distance between the sensed joint position and the first or second boundary
- the (limited) drive supports the manual guidance induced movement of the joint actuated by it, if or
- end stops of joints can be considered particularly advantageous in one embodiment.
- a support of the hand-guide-induced movement of the joint by the drive in particular to the same direction driving force and / or nominal joint position change, at least in one
- predetermined range of the distance between the detected or desired joint position and the first or second boundary monotonically, in particular strictly monotonically, in particular linearly reduced, if the hand guidance-induced movement is directed to this limit.
- the (limited) drive actuates the joint j in support of the handguard-induced movement of the joint based on, in particular, an actual change q ,, cmdfe) -qj, cmd (ti) or qj, Cm d (i +) qj, cmd (i) of the target joint position Cm d, which, in particular proportionally, depends on a difference of the detected current joint position of the joint actuated by it and a current nominal joint position for the drive, in particular by a new ( commanded) desired joint position cmdfe) or qj, cmd (i + 1), which attempts to drive the drive or is given to this, from the sum of
- Impedanzregelung be implemented, which advantageously requires no (fast) force detection or control and can be implemented accordingly in an embodiment without such.
- one or the proportionality factor k j, the dependence of the current change in the desired joint position depends on the difference of the direction of the hand guidance induced movement and / or, in particular at least
- the method comprises the step of: actuating the joints by the drives of the robot on the basis of or depending on the detected current joint positions such, in particular with the proviso that a minimum distance between one, in particular hardware and / or software technology , predetermined, in particular environmental or space fixed, fixed point and a robot-fixed
- the shaft of the shaft of a (robot-guided) surgical instrument and / or the predetermined fixed point may be a so-called trocar point or a natural or artificial body opening, through which or the shaft for a, in particular minimally invasive, examination and / or surgery is introduced without the present invention to this application
- the actuators actuate the joints based on or in response to a current change in a desired joint position, the one of, in particular in the joint space transformed Cartesian, minimum distance from the robot-fixed reference to the predetermined fixed point, in particular one
- (Task) vector containing this distance depends, in particular on the basis of which is determined.
- Zero space is projected to minimize the minimum distance between the given fixed point and the robot fixed reference.
- the minimization of the minimum distance between the predetermined fixed point and the robot-fixed reference implemented as a primary task in the form of a differential impedance control while the softwaretechni see end stops as far as possible in addition as secondary
- the next point C (Cartesian) closest to the fixed point T is determined on the robot-fixed reference, in particular the robot-guided shaft, so that a (task) vector XCT describes the, in particular two-dimensional, minimum distance from the robot-fixed reference to the predetermined fixed point and in one embodiment has 2 dimensions or components for this distance and / or (at least) one dimension or (task) component for a redundancy parameter, in particular an elbow angle of the robot.
- a pseudo-inverse especially the Moore-Penrose pseudo-inverse, X, the
- a system for controlling a robot in particular a system of an arrangement with the robot, in particular hardware and / or software, in particular program technology, is set up to carry out a method described herein and / or comprises:
- Means for actuating the joints by driving the robot based on these detected current joint positions such that at least one drive supports a hand guidance induced movement of the joint actuated by it, if a distance between its detected or desired joint position and a predetermined first limit has a first value and, on the other hand, less assisted if that distance has a second value less than the first value, and in addition the hand gesture-induced motion is directed toward the first boundary.
- system or its agent has:
- assisted handgrip-induced movement of the joint actuated by it if a distance between its detected or desired joint position and a predetermined second boundary has a third value, and less supported, if this distance has a fourth value which is smaller than the third value, and in addition, the handguard-induced movement is directed toward the second boundary.
- system or its means for this purpose in particular hardware and / or software, in particular program technology, is set up such that the drive does not support the hand-guided movement of the joint actuated by it, if the distance between the detected or nominal joint position and the first or second boundary has at most a predetermined minimum amount, and / or supports, if the distance between the sensed joint position and the first boundary is less than the first value but the hand gesture induced motion from the first one
- Limit is directed away and / or if the distance between the detected or joint position and the second boundary is less than the third value, but directed the hand guidance induced movement away from the second boundary.
- the system or means comprises means for reducing propulsion of the handrail induced movement of the joint by the drive at least in a predetermined range of the distance between the sensed joint position and the first or the first or second joint second boundary monotonous, in particular strictly monotone, in particular linear, if the hand gesture-induced movement is directed towards this boundary; and or
- a means in the sense of the present invention may be designed in terms of hardware and / or software, in particular a data or signal-connected, preferably digital, processing, in particular microprocessor unit (CPU) and / or a memory and / or bus system or multiple programs or program modules.
- the CPU may be configured to execute instructions implemented as a program stored in a memory system, to capture input signals from a data bus, and / or
- a storage system may comprise one or more, in particular different, storage media, in particular optical, magnetic, solid state and / or other non-volatile media.
- the program may be such that it is capable of embodying or executing the methods described herein, so that the CPU may perform the steps of such methods, and thus, in particular, control the robot.
- one or more, in particular all, steps of the method are completely or partially automated, in particular by the system or its means.
- Fig. 1 an arrangement with a robot and a system for controlling the robot according to an embodiment of the present invention
- FIG. 2 a method of controlling the robot according to an embodiment of the present invention
- FIG. 3 a proportionality factor used in this case.
- FIG. 1 shows an arrangement with a robot 10 and a system having a robot controller 2 for controlling the robot 10 according to an embodiment of the present invention, which has a method of controlling the robot shown in FIG Robot according to an embodiment of the present invention executes or is adapted thereto.
- the robot 10 has seven joints with joint position sensors and drives 1 1 - 17 and a robot-guided shaft 18, which he is to lead through a fixed point T.
- the distance between shaft 18 and fixed point T is greatly exaggerated for clarity.
- one of the joints for one of the joints is the same
- Joint position sensor detected current joint position q j and a
- FIG. 3 shows the proportionality factor k j for joint j in FIG. 3
- a step S300 the controller 2 determines the fixed point T
- the controller 2 calculates current nominal joint position changes or new nominal joint positions in a step S400, for example according to the above equation (5) or (5 ').
- step S500 it actuates the drives of the joints 1 1 -17 according to this new nominal joint positions.
- step S100 it carries out step S100 again, wherein these desired joint positions determined in step S400 are now used as actual desired joint positions of the new control or control cycle.
- step S300 can be dispensed with.
- step S400 the controller 2 calculates the current nominal joint position changes or
- Deviation between the currently detected joint position and the current nominal joint position in the differential determination of the current nominal joint position change or new nominal joint position (see equations (1), (1 '), (5), (5')) increasingly is hidden and the robot in the corresponding
Landscapes
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Manipulator (AREA)
- Numerical Control (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017004711.1A DE102017004711B4 (de) | 2017-05-16 | 2017-05-16 | Robotersteuerung |
| PCT/EP2018/061635 WO2018210590A1 (de) | 2017-05-16 | 2018-05-07 | Robotersteuerung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3624998A1 true EP3624998A1 (de) | 2020-03-25 |
Family
ID=62116466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18722531.3A Withdrawn EP3624998A1 (de) | 2017-05-16 | 2018-05-07 | Robotersteuerung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12103183B2 (de) |
| EP (1) | EP3624998A1 (de) |
| CN (1) | CN110621448B (de) |
| DE (1) | DE102017004711B4 (de) |
| WO (1) | WO2018210590A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019202456B4 (de) | 2019-02-22 | 2025-07-10 | Kuka Deutschland Gmbh | Verfahren und System zum Durchführen einer vorgegebenen Aufgabe durch einen Roboter |
| US11420331B2 (en) * | 2019-07-03 | 2022-08-23 | Honda Motor Co., Ltd. | Motion retargeting control for human-robot interaction |
| DE102019131400B4 (de) * | 2019-11-21 | 2022-03-10 | Franka Emika Gmbh | Kraftmessung und Krafterzeugung in redundanten Robotermanipulatoren |
| EP4289131A4 (de) * | 2021-02-05 | 2024-12-18 | Ali Kord | Bewegungserfassung für leistungskunst |
| CN113070879B (zh) * | 2021-03-29 | 2022-03-29 | 北京锐智金联科技有限公司 | 可移动设备 |
| CN113858201B (zh) * | 2021-09-29 | 2023-04-25 | 清华大学 | 用于柔性驱动机器人的自适应变阻抗控制方法、系统与设备 |
| JP7829543B2 (ja) * | 2023-12-22 | 2026-03-13 | 株式会社安川電機 | ロボットシステム及び制御方法 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6714839B2 (en) * | 1998-12-08 | 2004-03-30 | Intuitive Surgical, Inc. | Master having redundant degrees of freedom |
| ATE394719T1 (de) | 2001-01-29 | 2008-05-15 | Acrobot Company Ltd | Roboter mit aktiven beschränkungen |
| JP2011206886A (ja) * | 2010-03-30 | 2011-10-20 | Yaskawa Electric Corp | ロボットの制御装置及び方法 |
| AT509927B1 (de) * | 2010-06-08 | 2015-05-15 | Keba Ag | Verfahren zum programmieren oder vorgeben von bewegungen oder abläufen eines industrieroboters |
| CN103492133B (zh) * | 2011-04-19 | 2016-04-13 | Abb研究有限公司 | 具有运动冗余臂的工业机器人和用于控制该机器人的方法 |
| JP6312264B2 (ja) * | 2012-09-17 | 2018-04-18 | リシンク ロボティクス インコーポレイテッド | 冗長自由度を伴うロボットマニピュレータの制約 |
| DE102013222456A1 (de) * | 2013-11-05 | 2015-05-07 | Kuka Laboratories Gmbh | Verfahren zum Programmieren von Bewegungsabläufen eines redundanten Industrieroboters und zugehöriger Industrieroboter |
| DE102014010638A1 (de) * | 2014-07-17 | 2016-01-21 | Kuka Roboter Gmbh | Verfahren und Vorrichtung zum Steuern eines Roboters |
| DE102014216514B3 (de) | 2014-08-20 | 2015-09-10 | Kuka Roboter Gmbh | Verfahren zum Programmieren eines Industrieroboters und zugehöriger Industrieroboter |
| DE102014222809B3 (de) | 2014-11-07 | 2016-01-14 | Kuka Roboter Gmbh | Event-basierte Redundanzwinkelkonfiguartion für Gelenkarmroboter |
| US9592608B1 (en) * | 2014-12-15 | 2017-03-14 | X Development Llc | Methods and systems for providing feedback during teach mode |
| DE102015014994B3 (de) | 2015-11-19 | 2017-01-05 | Kuka Roboter Gmbh | Steuerung eines Roboters |
| GB2588630B (en) * | 2019-10-29 | 2024-03-20 | Cmr Surgical Ltd | Robotic joint control |
-
2017
- 2017-05-16 DE DE102017004711.1A patent/DE102017004711B4/de active Active
-
2018
- 2018-05-07 US US16/613,867 patent/US12103183B2/en active Active
- 2018-05-07 CN CN201880032210.5A patent/CN110621448B/zh active Active
- 2018-05-07 WO PCT/EP2018/061635 patent/WO2018210590A1/de not_active Ceased
- 2018-05-07 EP EP18722531.3A patent/EP3624998A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN110621448B (zh) | 2023-04-28 |
| DE102017004711B4 (de) | 2019-02-21 |
| CN110621448A (zh) | 2019-12-27 |
| DE102017004711A1 (de) | 2018-11-22 |
| WO2018210590A1 (de) | 2018-11-22 |
| US12103183B2 (en) | 2024-10-01 |
| US20200101604A1 (en) | 2020-04-02 |
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