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Automatic Robot Calibration for the NAO

  • Tobias Kastner
  • Thomas Röfer
  • Tim Laue
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8992)

Abstract

In this paper, we present an automatic approach for the kinematic calibration of the humanoid robot NAO. The kinematic calibration has a deep impact on the performance of a robot playing soccer, which is walking and kicking, and therefore it is a crucial step prior to a match. So far, the existing calibration methods are time-consuming and error-prone, since they rely on the assistance of humans. The automatic calibration procedure instead consists of a self-acting measurement phase, in which two checkerboards, that are attached to the robot’s feet, are visually observed by a camera under several different kinematic configurations, and a final optimization phase, in which the calibration is formulated as a non-linear least squares problem, that is finally solved utilizing the Levenberg-Marquardt algorithm.

Keywords

Joint Angle Humanoid Robot Forward Kinematic Automatic Calibration Joint Data 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

We would like to thank the members of the team B-Human for providing the software framework for this work. This work has been partially funded by DFG through SFB/TR 8 “Spatial Cognition”.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Fachbereich 3 – Mathematik und InformatikUniversität BremenBremenGermany
  2. 2.Deutsches Forschungszentrum Für Künstliche Intelligenz, Cyber-Physical SystemsBremenGermany

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