ROMANSY 11 pp 399-408 | Cite as

Development and Application of the Telbot System

A New Tele Robot System
  • W. Wälischmiller
  • Hong-You Lee
Part of the International Centre for Mechanical Sciences book series (CISM, volume 381)


This paper presents a new tele robot system, trade named TELBOT. The robot is developed by Hans Wälischmiller GmbH and has been used for steam generator maintenance in Canada and for decommissioning glove boxes in Japan. This is a robot with six revolution joints and a unique drive system that allows unrestricted motion of each joint. All of the electronics, cables, motors, reduction gears and encoders are contained within the unique base of the manipulator. The transmission of motions of the arm are translated from the base drive system by a set of concentric tubes that make up the links and sets of bevel gears that make up the joints. There is no electrical parts in the arm itself, therefore, all the revolution joints can rotate over 360 degrees continuously and the arm itself is relatively compact and lightweight. There is no closed-form solution of the inverse kinematics, because the wrist joint axes do not intersect at one point. The method to solve the inverse kinematics problem of series-chain manipulators with general geometry proposed in the earlier papers of the second author is used to find all the 16 possible configurations. It greatly facilitates selecting the optimal configuration for a given workspace and avoiding obstacles.


Joint Angle Steam Generator Inverse Kinematic Twist Angle Bevel Gear 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. [1]
    Bains, N., Majarais, B. and Scott, D.A., 1995, “Cleaning of Steam Generator Tubes at the Primary Side Using a General Purpose Manipulator”, ANS conference, San Francisco, October.Google Scholar
  2. [2]
    Lee (Li), H.-Y. and Liang, C.-G., 1988, “Displacement Analysis of the General Spatial 7-Link 7R Mechanism”, International Journal of Mechanism and Machine Theory, Vol. 23, pp. 219–226.CrossRefGoogle Scholar
  3. [3]
    Tidwell, P. H., Glass, S. W. and et al, 1991, “COBRA - Design and Development of a Manipulator for Nuclear Steam Generator Maintenance”, Proceedings of the 2nd National Applied Mechanisms and Robotics Conference, USA, Vol. 1, pp. IVB1–1 to IVB1–10.Google Scholar
  4. [4]
    Wälischmiller, W. and Frager, O., 1995, “TELBOT–A Modular Tele-Robot System for Hostile Environments with Unlimited Revolutionary Joints and Motors, Drive Sensors and Cables in the Base”, Proceedings of the ANS 6th Topical Meeting on Robotics and Remote Systems, Monterey, California, USA, Vol. 1, pp. 274–280.Google Scholar

Copyright information

© Springer-Verlag Wien 1997

Authors and Affiliations

  • W. Wälischmiller
    • 1
  • Hong-You Lee
    • 1
  1. 1.Hans Wälischmiller GmbHMeersburgGermany

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