Supervision of Nonlinear Networked Control Systems Under Network Constraints

Afef Najjar (1) , Thach Ngoc Dinh (2) , Messaoud Amairi (1) , Tarek Raïssi (2)

1 ENIG - Ecole Nationale d'Ingénieurs de Gabès
2 CEDRIC - LAETITIA - CEDRIC. Traitement du signal et architectures électroniques

The remote supervision for a class of nonlinear systems in the presence of additive disturbances and measurement noises is considered in this paper. The communication network may introduce time delays while exchanging data among sites connected to the network medium (i.e., the data acquisition site and the remote plant site). Two different approaches are presented in this paper. The first one uses a conventional estimator-based predictor when the uncertainties are supposed to be known. In the case of unknown but bounded uncertainties by known bounds, an interval estimation-based predictor evaluating the set of admissible values for the state is investigated. The state prediction techniques are used to compensate the effect of network-induced delays. Simulation results are introduced to illustrate the efficiency of the proposed techniques.

Keywords: Index Terms-Nonlinear networked control system (NNCS); time-varying delay; state estimation; interval observer; predic- tor

Domains: Engineering Sciences [physics]; Automatic

Afef Najjar, Thach Ngoc Dinh, Messaoud Amairi, Tarek Raïssi. Supervision of Nonlinear Networked Control Systems Under Network Constraints. 2019 4th Conference on Control and Fault Tolerant Systems (SysTol), Sep 2019, Casablanca, Morocco. pp.270-275, ⟨10.1109/SYSTOL.2019.8864767⟩. ⟨hal-02434061⟩