Controlled Lagrangians and the Stabilization of Euler-Poincaré Mechanical Systems

Bloch, A. M., N. E. Leonard and J. E. Marsden

Int. J. Robust Nonlinear Control, 11, 191-214

Abstract:

In this paper we develop a constructive approach to the determination of stabilizing control laws for a class of Lagrangian mechanical systems with symmetry -- systems whose underlying dynamics are governed by the Euler-Poincaré equations. This work extends our previous work on the stabilization of mechanical control systems using the method of controlled Lagrangians. The guiding principle behind our methodology is to develop a class of stabilizing feedback control laws which yield closed-loop dynamics that remain in Lagrangian form. Using the methodology for Euler-Poincaré systems, we analyse stabilization of a satellite and an underwater vehicle controlled with momentum wheels.

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