Brief paper: Linear unstable plants with saturating actuators: Robust stabilization by a time varying sliding surface

Authors:
M. L. Corradini;G. Orlando
Affiliations:
Dipartimento di Matematica e Informatica, Universití di Camerino, via Madonna delle Carceri, 62032 Camerino (MC), Italy;Dipartimento di Ingegneria Informatica, Gestionale e dell'Automazione, Universití Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy
Venue:
Automatica (Journal of IFAC)
Year:
2007

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Abstract

This paper proposes the use of a time-varying sliding surface for the robust stabilization of linear uncertain SISO plants with saturating actuators. A constructive procedure for its design is also proposed, and stability of the closed loop system is proved in the null controllable region. The proposed technique does not require plant stability, and can manage any bounded disturbance term satisfying the matching condition. Theoretical results have been validated by simulation using the missile roll angle control problem.