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Biological Cybernetics

, Volume 90, Issue 5, pp 368–375 | Cite as

A model of force and impedance in human arm movements

  • K. P. Tee
  • E. Burdet
  • C. M. Chew
  • T. E. Milner
Article

Abstract.

This paper describes a simple computational model of joint torque and impedance in human arm movements that can be used to simulate three-dimensional movements of the (redundant) arm or leg and to design the control of robots and human-machine interfaces. This model, based on recent physiological findings, assumes that (1) the central nervous system learns the force and impedance to perform a task successfully in a given stable or unstable dynamic environment and (2) stiffness is linearly related to the magnitude of the joint torque and increased to compensate for environment instability. Comparison with existing data shows that this simple model is able to predict impedance geometry well.

Keywords

Motor adaptation Impedance Force Stable and unstable interactions 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • K. P. Tee
    • 1
  • E. Burdet
    • 1
    • 2
  • C. M. Chew
    • 1
  • T. E. Milner
    • 3
  1. 1.Department of Mechanical EngineeringNational University
  2. 2.Division of BioengineeringNational University
  3. 3.School of KinesiologySimon Fraser UniversityCanada

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