15th Triennial World Congress of the International Federation of Automatic Control
  Barcelona, 21–26 July 2002 
A GLOBAL STABILIZATION STRATEGY FOR AN INVERTED PENDULUM
B. Srinivasan, P. Huguenin, K. Guemghar, and D. Bonvin
Labaratoire d’Automatique,
Ècole Polytechnique Fédérale de Lausanne,
CH-1015 Lausanne, Switzerland.
e-mail: bala.srinivasan@epfl.ch

The problems of swinging up an inverted pendulum on a cart and controlling it around the upright position have been traditionally treated as two separate problems. This paper proposes a strategy that is globally asymptotically stabilizing under actuator saturation and, in addition, locally exponentially stabilizing. The proposed methodology performs swing up and control simultaneously and uses elements from input-output linearization, energy control, and singular perturbation theory. Experimental results on a laboratory-scale setup are presented to illustrate the applicability of the method.
Keywords: Nonlinear Systems, Stabilization, Feedback Linearization, Energy Control, Singular Perturbation
Session slot T-Tu-A08: Stabilization II/Area code 2c : Non-linear Systems