Abstract
Calibration aims at identifying the model parameters of a robot through experimental measures. In this paper, necessary mathematical conditions for calibration are developed, considering the desired accuracy, the sensor inaccuracy of the joint coordinates, and the measurement noise. They enable to define a physically meaningful stop criterion for the identification algorithm and a numerical bound for the observability index \(O_3\), the minimum singular value of the observability matrix. With this bound, observability problems can be safely detected during calibration. Those conditions for calibration are illustrated through a simple example.
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Acknowledgments
This work has been supported by Thales Alenia Space and the Region “Provence-Alpes-Côte-d’Azur”.
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Gayral, T., Daney, D. (2014). A Sufficient Condition for Parameter Identifiability in Robotic Calibration. In: Thomas, F., Perez Gracia, A. (eds) Computational Kinematics. Mechanisms and Machine Science, vol 15. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-7214-4_15
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DOI: https://doi.org/10.1007/978-94-007-7214-4_15
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