Frontiers of Mechanical Engineering >

2013 , Vol. 8 >Issue 3: 252 - 260

DOI: https://doi.org/10.1007/s11465-013-0249-7

RESEARCH ARTICLE

Kinematic calibration of precise 6-DOF stewart platform-type positioning systems for radio telescope applications

  • Juan Carlos JÁUREGUI , 1 ,
  • Eusebio E. HERNÁNDEZ 2 ,
  • Marco CECCARELLI 3 ,
  • Carlos LÓPEZ-CAJÚN 4 ,
  • Alejandro GARCÍA 5
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  • 1. División de Estudios de Posgrado, Facultad de Ingeniería, Universidad Autónoma de Quéretaro Quéretaro, Qro. Mexico
  • 2. National Polytechnic Institute, IPN, Section of Graduate Studies and Research, ESIME-UPT, México D.F., Mexico
  • 3. Laboratory of Robotics and Mechatronics University of Cassino, Italy
  • 4. Universidad Autónoma de Quéretaro Querétaro, Qro. México
  • 5. CIATEQ, A.C. Aguascalientes, Ags. México

Received date: 20 Oct 2012

Accepted date: 24 Jan 2013

Published date: 05 Sep 2013

Copyright

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
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Abstract

The pose accuracy of a parallel robot is a function of the mobile platform posture. Thus, there is no a single value of the robot’s accuracy. In this paper, two novel methods for estimating the accuracy of parallel robots are presented. In the first method, the pose accuracy estimation is calculated by considering the propagation of each error, i.e., error variations are considered as a function of the actuator’s stroke. In the second method, it is considered that each actuator has a constant error at any stroke. Both methods can predict pose accuracy of precise robots at design stages, and/or can reduce calibration time of existing robots. An example of a six degree-of-freedom parallel manipulator is included to show the application of the proposed methods.

Key words： pose errors; error estimation; parallel robot; radio telescopes

Cite this article

Juan Carlos JÁUREGUI , Eusebio E. HERNÁNDEZ , Marco CECCARELLI , Carlos LÓPEZ-CAJÚN , Alejandro GARCÍA . Kinematic calibration of precise 6-DOF stewart platform-type positioning systems for radio telescope applications[J]. Frontiers of Mechanical Engineering, 2013 , 8(3) : 252 -260 . DOI: 10.1007/s11465-013-0249-7

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