Modeling and design of passive electric networks interconnecting piezoelectric transducers for distributed vibration control

Article type: Research Article

Authors: Porfiri, M.^{a; b} | dell'Isola, F.^{a; *} | Santini, E.^c

Affiliations: [a] Dip. di Ing. Strutturale&Geotecnica, "La Sapienza", 00184 Rome, Italy | [b] Engineering Science and Mechanics Department, Virginia Tech, Blacksburg, VA 24061-0219, USA | [c] Dip. di Ing. Elettrica, "La Sapienza", 00184 Rome, Italy

Correspondence: [*] Corresponding author. Tel.: +39 0644 585 297; Fax: +39 064 884 852; E-mail: [email protected]

Abstract: In the literature collocated or distributed arrays of piezeoelectric patches are employed to actively control structural vibrations. In the present work in order to damp beam vibrations a completely passive electric controller is designed, exploiting distributed piezoelectric transduction. In this way a simultaneous multimodal vibration suppression is obtained. The optimal electric network (interconnecting the piezoelectric transducers) is synthesized as a finite differences approximation of the derived distributed (infinite dimensional) optimal controller. A prototype of the proposed novel smart structure (Piezo-ElectroMechanical beam) is designed, allowing for appreciating its technical feasibility and effectiveness.

DOI: 10.3233/JAE-2005-672

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 21, no. 2, pp. 69-87, 2005