Contact Transition Control of a Flexible Structure Mounted Manipulator

  • Theeraphong Wongratanaphisan
  • Matthew O. T. Cole
Conference paper


A flexible structure mounted manipulator (FSMM) is a robotic system that consists of a rigid manipulator installed on a supporting structure that is not rigid. Another robotic system which possesses similar dynamic characteristics is a micro-macromanipulator(MMM) in which a small (micro) manipulator, considered rigid, is mounted on the tip of a long-reach (macro) manipulator, considered flexible. Designing controllers for a FSMM or MMM is a difficult task as the motion of the flexible structure adds complexity to the system dynamics. It is especially difficult when the FSMM is required to interact with its environment. This paper investigates force control techniques for a FSMM in contact transition phase. Three types of controllers are compared: (1) discontinuous control, (2) impedance control, and (3) robust impedance control. These controllers were implemented and tested on a 2-DOF FSMM lab-scale prototype and their performance evaluated and discussed.


Contact Force Joint Angle Robot Manipulator Impedance Control Impact Speed 
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  1. 1.
    J.J. Craig, Introduction to Robotics: Mechanics and Control, 3rd edn., Pearson Prentice Hall, NJ, 2005.Google Scholar
  2. 2.
    N. Hogan, Stable Execution of Contact Tasks Using Impedance Control, IEEE Int. Conf. on Robot. and Auto. 4, 1987, 1047–1054.MathSciNetGoogle Scholar
  3. 3.
    J.M. Hyde and M.R. Cutkosky, Controlling Contact Transition, IEEE Cont. Sys. Mag., February 1994, 25–30.Google Scholar
  4. 4.
    O. Khatib, A Unified Approach for Motion and Force Control of Robot Manipulators: The Operational Space Formulation, IEEE J. of Robot. and Auto. RA-3, 1987, 43–53.CrossRefGoogle Scholar
  5. 5.
    Y. Perrot, J.J. Cordier, J.P. Friconneau, D. Maisonnier, E. Martin and J.D. Palmer, Development of a Long Reach Articulated Manipulator for ITER in Vessel Inspection under Vacuum and Temperature, Fusion Eng. and Des. 69, 2003, 187–190.CrossRefGoogle Scholar
  6. 6.
    M.A. Torres, S. Dubowsky and A.C. Pisoni, Path Planning for Elastically-Mounted Space Manipulators: Experiment Evaluation, IEEE Int. Conf. on Robot. and Auto., San Diago, CA, May 1994.Google Scholar
  7. 7.
    T. Wongratanaphisan, Force Control of a Flexible Structure Mounted Manipulator, Final Report, submitted to Thailand Research Fund, Contract No. MRG4880198, September 2007.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Theeraphong Wongratanaphisan
    • 1
  • Matthew O. T. Cole
    • 1
  1. 1.Department of Mechanical EngineeringChiang Mai UniversityChiang MaiThailand

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