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New Observer-Based Controller Design for Delayed Systems Subject to Input Saturation and Disturbances
Ist Teil von
Iranian journal of science and technology. Transactions of electrical engineering, 2020-09, Vol.44 (3), p.1081-1092
Ort / Verlag
Cham: Springer International Publishing
Erscheinungsjahr
2020
Link zum Volltext
Quelle
SpringerLink (Online service)
Beschreibungen/Notizen
A new methodology to design an
H
∞
observer-based controller for discrete-time delayed systems subject to input saturation and
L
2
-norm disturbances is proposed, motivated by a benchmark problem. The stabilizing observer-based controller gains are obtained from an LMI formulation using a Lyapunov–Krasovskii functional, free weighting matrices, and an effective approach to overcome the obstacle of the bilinearity. To select the most adequate controller, an iterative optimization algorithm is developed to maximize the set of admissible initial conditions. The proposed results are illustrated by a practical application using the quadruple tank process to visualize different control theory notions and phenomena in laboratory conditions.