Logo
About usInnovation CMChallengesEuropa2iEntrepreneurshipR&D&I SearchAgentsEventsReports
en
PREDICTION, CONTROL AND DETERMINATION OF OVERALL WORKING PRECISION OF A ROBOTCM Patents

Índice de la ficha

Updated at
24/07/2026
Numero publicacion
EP.4570448.A1
Fecha publicacion
18/06/2025
Numero solicitud
EP20230216073
Fecha presentacion
12/12/2023

En detalle

Resumen

A method comprising: processing a simulated movement of a robot in at least one processing operation to determine deviations of the robot due to a dynamic response of the robot and external stresses on the robot; estimating an overall working precision on a robot end-effector, at each of one or more path coordinates of the end-effector, taking into account effects of the robot dynamic response and process response of at least one processing operation; performing a predictive calculation of torques in robot joints under robot idle and working conditions, according to a predetermined process force model and/or with information from a process force and torque profile, resulting in predictive torque profiles; performing a calculation of a ratio between robot deviations and at least one deviation of a measured torque from a nominal torque at each joint of the robot; monitoring the measured torques at the joints of the robot, preferably in real time, based on the predictive torque profiles; and generating an alarm action and/or a corrective action based on the monitoring of the measured torques.

Reivindicaciones

1. A method characterised in that it comprises: processing a simulated movement (30) of a robot (24) in at least one processing operation to determine deviations (10) of the robot due to a dynamic response (24) of the robot and external stresses on the robot; estimating an overall working precision (16) on a robot end-effector, at each of one or more path coordinates of the end-effector, taking into account effects of the robot dynamic response and process response of at least one processing operation; performing a predictive calculation of torques (26) in robot joints under robot idle and working conditions, according to a predetermined process force model (4) and/or with information from a process force and torque profile (5), resulting in predictive torque profiles (31); performing a calculation of a ratio between robot deviations (10) and at least one deviation of a measured torque (36) from a nominal torque (32) at each joint of the robot; monitoring the measured torques (36) at the joints (26) of the robot, preferably in real time, based on the predictive torque profiles (31); and generating an alarm action (41) and/or a corrective action based on the monitoring of the measured torques. 2. The method according to claim 1, wherein the predictive torque profiles (31) each comprise an upper limit of a permissible torque (33) and a lower limit of the permissible torque (34) that can be exerted by the robot (24) at positions relative to robot paths in the process. 3. A method according to any one of the preceding claims, wherein the profile of deviations for each coordinate axis of an end-effector (TCP) (39) of a robot (24) comprises maximum and minimum path deflections that can be exerted by the robot on robot paths in the process. 4. A method according to any one of the preceding claims, further comprising: determining a profile of deviations for each coordinate axis of an end-effector (TCP) (39) of a robot (24); and making adjustments to a control of the robot based on the deflection profile to increase an overall working precision of the robot. 5. The method according to claim 4, wherein estimating the overall working precision (16) comprises generating a working precision model (11) including the possibility of correcting deviations in working precision (17) of the robot (24). 6. A method according to any one of the preceding claims, wherein estimating the overall working precision (16) is carried out by means of the following equation: overall working precision = robot working precision (17) + deviation of a tool (18) of the robot (24) + mounting deviation of a spindle (19) of the robot + deformation of a workpiece (20) processed by the robot + deformation of a fixture (21) of the robot. 7. A method according to any one of the preceding claims, wherein estimating the overall working precision (16) is carried out by considering an error propagation of one or more elements of the robot (24) or of the at least one processing operation. 8. The method according to claim 7, wherein the one or more elements of the robot (24) and the at least one processing operation comprise at least one of: repeatability (12), adjustment of cutting conditions (14), deviation of a tool (18) of the robot, and mounting deviation of a spindle (19) of the robot. 9. A method according to any one of the preceding claims, wherein the dynamic response of the robot (24) and the external robot solicitations comprise process parameters (1), response of a tool (2) of the robot, and characteristics of a workpiece (3) to be processed by the robot. 10. A method according to any one of the preceding claims, wherein the dynamic response of the robot (24) and process effects of the at least one processing operation comprise nominal forces (6) and corrected forces (23) of the robot. 11. A data processing device or system comprising means for carrying out the method of any one of the preceding claims. 12. An assembly comprising the data processing device or system of claim 11 and a robot communicatively coupled to the data processing device or system. 13. Assembly according to claim 12, wherein the robot includes the data processing device or system. 14. A computer program comprising instructions which, when the program is executed on the at least one processing device, causes the at least one processing device to carry out the method of any one of claims 1 to 10. 15. Signal transmitting data processed by the software of claim 14.

Etiquetas

Inventores
Ferreras Higuero EugenioVizán Idoipe Antonio
Solicitantes
Pmrobots GmbhUniversidad Politécnica de Madrid
Clasificacion ipc
B25J 9/ 16 A I
Logo

Innovation CM
Challenges
Europa2i
Entrepreneurship
R&D&I Search
Agents
Events
Reports
About us
Contact
Give us your opinion
Cookies
Legal notice
Privacy

© Copyright Espacio Madrileño de Investigación e Innovación 2026