Piezoelectric Actuators in Smart Engineering Structures Using Robust Control

Author:

Moutsopoulou Amalia1,Petousis Markos1ORCID,Vidakis Nectarios1,Pouliezos Anastasios2,Stavroulakis Georgios E.2ORCID

Affiliation:

1. Department of Mechanical Engineering, Hellenic Mediterranean University Estavromenos Heraklion Crete, 714 10 Iraklio, Greece

2. Department of Production Engineering and Management, Technical University of Crete, Kounoupidianna, 731 00 Chania, Greece

Abstract

In this study, piezoelectric patches are used as actuators to dampen structural oscillations. Damping oscillations is a significant engineering challenge, and the use of piezoelectric patches in smart structures allows for a reduction in oscillations through sophisticated control methods. This analysis involved H-infinity (H∞) robust analysis. H∞ (H-infinity) control formulation is a robust control design method used to ensure system stability and performance under disturbances. When applied to piezoelectric actuators in smart structures, H∞ control aims to design controllers that are robust to variations in system dynamics, external disturbances, and modeling uncertainties, while meeting specified performance criteria. This study outlines the piezoelectric effects and advanced control strategies. A structural model was created using finite elements, and a smart structural model was analyzed. Subsequently, dynamic loads were applied and oscillation damping was successfully achieved by employing advanced control techniques.

Publisher

MDPI AG

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