Original scientific paper
https://doi.org/10.32985/ijeces.15.6.2
Dahlin Deadbeat Internal Model Control for Discrete MIMO Systems
Nahla Touati
; Esprit School of Engineering, André Ampère, Ariana, 2083, Tunisia, University of Tunis El Manar, National Engineering School of Tunis, Automatic Research Laboratory, Tunis, Le Belvédère, 1002, Tunisia
Imen Saidi
orcid.org/0000-0001-7366-3022
; University of Tunis El Manar, National Engineering School of Tunis, Automatic Research Laboratory, Tunis, Le Belvédère, 1002, Tunisia. Université de Tunis, Ecole Nationale Supérieure d’Ingénieurs de Tunis, Taha Hussein Montfleury, Tunis, 1008, Tunisia
Abstract
Controlling Multiple Input Multiple Output (MIMO) systems present a considerable challenge, particularly when dealing with time delays, nonlinearities, and disturbances. While the Dahlin algorithm and deadbeat control can offer good performance for such systems especially for systems requiring aperiodic responses or those where overshoot and setteling time need to be minimized, their effectiveness can diminish if the model parameters are inaccurate or in the presence of disturbances which lead to steady-state errors. To address these limitations, we propose combining these approaches with Internal Model Control, known for its robustness in handling variations in process dynamics, ensuring accurate setpoint tracking and disturbance rejection. In this paper, we introduce the Dahlin Deadbeat Internal Model Control (DDIMC) for discrete MIMO systems. Initially designed for linear processes with multiple time delays, this control strategy addresses complex control challenges arising from coupling effects and time delays. For nonlinear processes, we extend this controller using a multimodal control strategy which involves describing the nonlinear system with multiple linear discrete models, each paired with a Dahlin Deadbeat controller. A fusion technique is then employed to select the most suitable controller for application. Simulation case studies performed using the MATLAB software validate the effectiveness of these strategies, demonstrating their ability to consistently ensure satisfactory dynamic and robust performance.
Keywords
Dahlin Deadbeat control; Discrete Systems with Time Delays; Internal Model Control; Multimodal control; linear MIMO systems; nonlinear systems;
Hrčak ID:
317686
URI
Publication date:
7.6.2024.
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