An online identification algorithm of unknown time-varying delay and internal multimodel control for discrete non-linear systems

Samah Ben Atia, Anis Messaoud and Ridha Ben Abdennour

Mathematical and Computer Modelling of Dynamical Systems, 2018, vol. 24, issue 1, 26-43

Abstract: In this paper, an online algorithm is proposed for the identification of unknown time-varying input delay in the case of discrete non-linear systems described by decoupled multimodel. This method relies on the minimization of a performance index based on the error between the real system and the partial internal models outputs. In addition, a decoupled internal multimodel control is proposed for the compensation of discrete non-linear systems with time-varying delay. This control scheme incorporates partial internal model controls. Each partial controller is associated to a specified operating zone of the non-linear system. The switching between these controllers is ensured by a supervisor that contains a set of local predictors. A simulation example is carried out to illustrate the significance of the proposed time-varying delay identification algorithm and the proposed internal multimodel control scheme.

Date: 2018
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DOI: 10.1080/13873954.2017.1352607

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