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Repetitive Control Design for MIMO Systems With Saturating Actuators

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4 Author(s)
Flores, J.V. ; Dept. of Electr. Eng., Univ. Fed. do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil ; da Silva, J.M.G. ; Pereira, L.F.A. ; Sbarbaro, D.G.

This paper addresses the problem of tracking and rejection of periodic signals for linear multi-input, multi-output systems subject to control saturation. To ensure the periodic tracking/rejection, a modified state-space repetitive control structure is considered. Conditions in a “quasi” linear matrix inequality form are proposed to simultaneously compute a stabilizing state feedback gain and an anti-windup gain. Provided that the references and disturbances belong to a certain admissible set, these gains guarantee that the trajectories of the closed-loop system starting in a certain ellipsoidal set contract to the linearity region of the closed-loop system, where the presence of the repetitive controller ensures the periodic tracking/rejection.

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Automatic Control, IEEE Transactions on  (Volume:57 ,  Issue: 1 )