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Improving the accuracy of industrial robots by offline compensation of joints errors

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5 Author(s)
Olabi, A. ; LSIS, Arts et Metiers ParisTech, Lille, France ; Damak, M. ; Bearee, R. ; Gibaru, O.
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The use of industrial robots in many fields of industry like prototyping, pre-machining and end milling is limited because of their poor accuracy. Robot joints are mainly responsible for this poor accuracy. The flexibility of robots joints and the kinematic errors in the transmission systems produce a significant position error in the level of the end-effector. This paper presents these two types of joint errors. Identification methods are presented with experimental validation on a 6 axes industrial robot, STAUBLI RX 170 BH. An offline correction method used to improve the accuracy of this robot is validated experimentally.

Published in:

Industrial Technology (ICIT), 2012 IEEE International Conference on

Date of Conference:

19-21 March 2012