Straight Worms under Adaptive Control and Friction - Part 2: Adaptive Control

  • Carsten Behn
  • Klaus Zimmermann
Part of the IUTAM Bookseries book series (IUTAMBOOK, volume 30)

Abstract

This is the second part of the contribution to the adaptive control of worm-systems, which are inspired by biological ideas. Part 1 is the basis for this part. We focus now on the adaptive control since one cannot expect to have complete information about a sophisticated mechanical or biological system in general. Only structural properties (known type of actuator with unknown parameters) are known. Additionally, in a rough terrain, unknown or changing friction coefficients lead to uncertain systems, too. The consideration of uncertain systems leads us now to the use of adaptive control. We still assume that the worm-system contacts the ground via spikes and track gaits from the kinematical theory (preferred motion patterns to achieve movement) by means of adaptive controllers (λ-trackers). Then we replace the worm-ground interaction by stiction combined with Coulomb sliding friction (modification of a Karnopp friction model) and point out the main differences for the worm-like locomotion.

Keywords

Adaptive Control Transient Process Adaptive Controller Uncertain System Gain Parameter 
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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Copyright information

© Springer Dordrecht Heidelberg London New York 2011

Authors and Affiliations

  • Carsten Behn
    • 1
  • Klaus Zimmermann
    • 1
  1. 1.Department of Technical MechanicsIlmenau University of TechnologyIlmenauGermany

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