Resumo

MARTINEZ, Roque  e  ALVAREZ, Joaquín. Control of Mechanical Systems with Dry Friction. Comp. y Sist. [online]. 2012, vol.16, n.1, pp.5-13. ISSN 2007-9737.

A technique to design a dynamic continuous controller to regulate a class of full-actuated mechanical systems with dry friction is proposed. It is shown that the control eliminates the steady-state error and is robust with respect to parameter uncertainties. A simple method to find the parameters of the controller is also proposed. Moreover, an application of this result to control a 2-DOF underactuated mechanical system with dry friction in the non-actuated joint is described. Here, the control objective is to regulate the non-actuated variable while the position and speed of the actuated joint remain bounded. Performance issues of the developed synthesis are illustrated with numerical and experimental results.

Palavras-chave : Stability; friction; mechanical systems; underactuated systems.

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