Tracking for fully actuated mechanical systems: a geometric framework

  • Authors:
  • Francesco Bullo;Richard M. Murray

  • Affiliations:
  • Control and Dynamical Systems, Mail Stop 107-81, California Institute of Technology, Pasadena, CA 91125, USA;Control and Dynamical Systems, Mail Stop 107-81, California Institute of Technology, Pasadena, CA 91125, USA

  • Venue:
  • Automatica (Journal of IFAC)
  • Year:
  • 1999

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Abstract

We present a general framework for the control of Lagrangian systems with as many inputs as degrees of freedom. Relying on the geometry of mechanical systems on manifolds, we propose a design algorithm for the tracking problem. The notions of error function and transport map lead to a proper definition of configuration and velocity error. These are the crucial ingredients in designing a proportional derivative feedback and feedforward controller. The proposed approach includes as special cases a variety of results on control of manipulators, pointing devices and autonomous vehicles. Our design provides particular insight into both aerospace and underwater applications where the configuration manifold is a Lie group.