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Multibody System Dynamics

, 21:71 | Cite as

Ball on a beam: stabilization under saturated input control with large basin of attraction

  • Yannick AoustinEmail author
  • Alexander Formal’skii
Article

Abstract

This article is devoted to the stabilization of two underactuated planar systems, the well-known straight beam-and-ball system and an original circular beam-and-ball system. The feedback control for each system is designed, using the Jordan form of its model, linearized near the unstable equilibrium. The limits on the voltage, fed to the motor, are taken into account explicitly. The straight beam-and-ball system has one unstable mode in the motion near the equilibrium point. The proposed control law ensures that the basin of attraction coincides with the controllability domain. The circular beam-and-ball system has two unstable modes near the equilibrium point. Therefore, this device, never considered in the past, is much more difficult to control than the straight beam-and-ball system. The main contribution is to propose a simple new control law, which ensures by adjusting its gain parameters that the basin of attraction arbitrarily can approach the controllability domain for the linear case. For both nonlinear systems, simulation results are presented to illustrate the efficiency of the designed nonlinear control laws and to determine the basin of attraction.

Keywords

Saturated control Controllability domain Jordan form Stabilization Basin of attraction 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.Institut de Recherche en Communications et Cybernétique de Nantes U.M.R. 6597Nantes Cedex 3France
  2. 2.Institute of MechanicsMoscow Lomonosov State UniversityMoscowRussia

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