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On the Accuracy of N-1 Wire-driven Parallel Robots

  • Jean-Pierre Merlet
Part of the CISM International Centre for Mechanical Sciences book series (CISM, volume 544)

Abstract

A N−1 wire-driven parallel robot is a robot for which all the N≥3 wires are connected at the same point of the platform, allowing to control the location of this point. We are interested in the positioning accuracy of such a robot. If the wires are not elastic we show that the influence on the accuracy of the co-location errors of the wire anchor points on the platform is moderate, although a full analysis is a very difficult task. If the wires are elastic we study the influence of the the wire lengths measurement errors and inaccurate estimation of the stiffness of the wires. Again we show a moderate influence but very large changes in the tensions in the wires that probably prohibit the use of the redundancy to optimize the tension in the wires. In all cases the complexity of the forward kinematics of such a robot makes accuracy analysis a very demanding task that requires an in-depth investigation.

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Bibliography

  1. M. Carricato and J-P. Merlet. Direct geometrico-static problem of underconstrained cable-driven parallel robots with three cables. In IEEE Int. Conf. on Robotics and Automation, pages 3011–3017, Shangai, May, 9-13, 2011.Google Scholar
  2. S.E. Landsberger and T.B. Sheridan. A new design for parallel link manipulator. In Proc. Systems, Man and Cybernetics Conf., pages 812–814, Tucson, 1985.Google Scholar
  3. Y. Li and G.M. Bone. Are parallel manipulators more energy efficient ? In IEEE Int. Symp. on Computational Intelligence in Robotics and Automation, Banff, August 29- September 1, 2001.Google Scholar
  4. J-P. Merlet. Computing the worst case accuracy of a PKM over a workspace or a trajectory. In 5th Chemnitzer Parallelkinematik Seminar, pages 83– 96, Chemnitz, April, 25-26, 2006.Google Scholar
  5. J-P. Merlet and D. Daney. A portable, modular parallel wire crane for rescue operations. In IEEE Int. Conf. on Robotics and Automation, pages 2834–2839, Anchorage, May, 3-8, 2010.Google Scholar
  6. K. Miura and H. Furuya. Variable geometry truss and its application to deployable truss and space crane arms. In 35th Congress of the Int. Astronautical Federation, pages 1–9, Lausanne, October, 7-13, 1984.Google Scholar
  7. W.S. Murphy. Determination of a position using approximate distances and trilateration. Master’s thesis, Colorado School of Mines, Golden, July 2007.Google Scholar
  8. E. Ottaviano et al. CaTraSys (Cassino Traking System): A wire system for experimental evaluation of robot workspace. Robotics and Mechatronics, 14(1):78–87, 2002.Google Scholar
  9. Y. Takeda et al. A human body searching strategy using a cable-driven robot with an electromagnetic wave direction finder at major disasters. Advanced Robotics, 19(3):331–347, 2005.CrossRefGoogle Scholar
  10. F. Thomas et al. Uncertainty model and singularities of 3-2-1 wire-based tracking systems. In ARK, pages 107–116, Caldes de Malavalla, June 29- July 2, 2002.Google Scholar
  11. J. V. Zitzewitz et al. A versatile wire robot concept as a haptic interface for sport simulation. In IEEE Int. Conf. on Robotics and Automation, pages 313–318, Kobe, May, 14-16, 2009.Google Scholar
  12. M. Wu et al. A cable-driven locomotor training system for restoration of gait in human SCI. Gait & Posture, 33(2):256–260, February 2011.CrossRefGoogle Scholar
  13. Z. Yaqing, L. Qi, and L. Xiongwei. Initial test of a wire-driven parallel suspension system for low speed wind tunnels. In 12th IFToMM World Congress on the Theory of Machines and Mechanisms, Besancon, June, 18-21, 2007.Google Scholar

Copyright information

© CISM, Udine 2013

Authors and Affiliations

  • Jean-Pierre Merlet
    • 1
  1. 1.INRIA Sophia-AntipolisSophia AntipolisFrance

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