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Controllability analysis of planar snake robots influenced by viscous ground friction

Liljeback, Pål; Pettersen, Kristin Ytterstad; Stavdahl, Øyvind; Gravdahl, Jan Tommy
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URI
http://hdl.handle.net/11250/286698
Date
2009
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  • Publikasjoner fra CRIStin - NTNU [20842]
Original version
Liljeback, Pål; Pettersen, Kristin Ytterstad; Stavdahl, Øyvind; Gravdahl, Jan Tommy [Eds.] Proceedings IEEE International Conference on Intelligent Robots and Systems p. 3615-3622, IEEE conference proceedings, 2009   10.1109/IROS.2009.5354676
Abstract
This paper investigates the controllability properties of planar snake robots influenced by viscous ground friction forces. The paper provides three contributions: 1) A partially feedback linearized model of a planar snake robot is developed. 2) A stabilizability analysis is presented proving that any asymptotically stabilizable control law for a planar snake robot to an equilibrium point must be time-varying. 3) A controllability analysis is presented proving that planar snake robots are not controllable when the viscous ground friction is uniform, but that a snake robot becomes strongly accessible when the viscous ground friction is non-uniform. The analysis also shows that the snake robot does not satisfy sufficient conditions for small-time local controllability (STLC).
Description
- Author postprint
Publisher
IEEE
Journal
IEEE/RSJ International Conference on Intelligent Robots and Systems, 2009
Copyright
IEEE

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