Thermal Calibration of a 3 DOF Ultra High-Precision Robot Operating in Industrial Environment

While dealing with sub-micrometer precision robots, thermal expansion is the most significant source of inaccuracy. Thermal variations in the environment, in the robot parts and in the frame change the robot geometry, lowering the robot precision. In this article we propose a strategy to model and compensate such effects. The thermal behavior of a 3 DOF (Degree(s)-of-freedom) parallel robot has been studied using a high-precision measuring system. A model of the robot thermal behavior has been built and implemented in the controller. By using it, thermal deformations are compensated in real-time and an absolute accuracy of ±71 nm has been reached.


Publié dans:
Proceeding of the 2010 IEEE International Conference on Robotics and Automation, 3692-3697
Présenté à:
2010 IEEE International Conference on Robotics and Automation, Anchorage, Alaska, USA, 3-8 May 2010
Année
2010
Publisher:
IEEE
ISBN:
978-1-4244-5040-4
Mots-clefs:
Laboratoires:




 Notice créée le 2010-05-17, modifiée le 2019-08-12

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