The inverted pendulum has been used as a benchmark for motivating the study
of nonlinear control techniques. We propose a simple controller for balanc
ing the inverted pendulum and raise it to its upper equilibrium position wh
ile the cart displacement is brought to zero. The control strategy is based
on an energy approach of the cart and pendulum system. (C) 2000 Published
by Elsevier Science B.V. All rights reserved.