An online identification algorithm of unknown time-varying delay and internal multimodel control for discrete non-linear systems. Issue 1 (2nd January 2018)

• Record Type: Journal Article
• Authors: Ben Atia, Samah; Messaoud, Anis; Ben Abdennour, Ridha
• Is Part Of: Mathematical and computer modelling of dynamical systems. Volume 24:Issue 1(2018)
• Page Start: 26
• Page End: 43
• Publication Date: 2018-01-02
• Subjects: Time-varying delay identification -- internal multimodel control -- delayed systems -- decoupled polynomial multimodel -- discrete non-linear systems; Engineering -- Mathematical models -- Periodicals; Computer simulation -- Periodicals; 515.39
• DOI: 10.1080/13873954.2017.1352607
• Languages: English
• ISSNs: 1387-3954

Abstract

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.