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Evaluation of influence of target location on robot repeatability

Published online by Cambridge University Press:  09 April 2001

Raziel Riemer
Affiliation:
Department of Industrial Engineering and Management, Ben-Gurion University of the Negev, Beer Sheva 84105 (Israel)yael@bgumail.bgu.ac.il
Yael Edan
Affiliation:
Department of Industrial Engineering and Management, Ben-Gurion University of the Negev, Beer Sheva 84105 (Israel)

Abstract

This paper evaluates the influence of target location on robot repeatability. An experiment was set up to analyze the effect of the three-dimensional target location on robot repeatability. An error-analysis model to determine repeatability based on the robot's kinematic model and known robot parameters was developed. Experimental results indicated that there was a significant statistical difference between repeatability at different locations in the workspace and that the height of the target point influenced repeatability. Experimental results tended to those derived from the error-analysis kinematic model. Hence, to determine the optimal target location, there is no need for extensive experimentation; instead, only a few target points can be sampled and compared to an error-analysis model.

Type
Research Article
Copyright
© 2000 Cambridge University Press

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