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Variable structure control applied to underactuated robots

Published online by Cambridge University Press:  01 May 1997

Kangsik Lee
Affiliation:
Department of Aeronautical and Astronautical Engineering, University of Illinois at Urbana-Champaign, 305A Talbot Laboratory, Urbana IL 61801, USA. E-mail: vcc@uiuc.edu
Sheri Coates
Affiliation:
Department of Aeronautical and Astronautical Engineering, University of Illinois at Urbana-Champaign, 305A Talbot Laboratory, Urbana IL 61801, USA. E-mail: vcc@uiuc.edu
Victoria Coverstone-Carroll
Affiliation:
Department of Aeronautical and Astronautical Engineering, University of Illinois at Urbana-Champaign, 305A Talbot Laboratory, Urbana IL 61801, USA. E-mail: vcc@uiuc.edu

Abstract

Variable structure control is applied to an underactuated two and three-link robot. Control laws are developed to invert the robot from its stable, downward equilibrium position to an inverted position. This maneuver is accomplished by pumping energy into the system with the variable structure controller. A linear balancing controller is activated once the robot nears the inverted position. Numerical simulations are presented for both the two and three-link robot.

Type
Research Article
Copyright
© 1997 Cambridge University Press

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