Article (Scientific journals)
On transmission Zeros of piezoelectric structures
Pathak, Shashank; Piron, Dimitri; Paknejad Seyedahmadian, Ahmad et al.
2021In Journal of Intelligent Material Systems and Structures
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Keywords :
Piezoelectric patches; transmission zeros; static response; physical interpretation; pole-zero pattern
Abstract :
[en] The evaluation of transmission zeros is of great importance for the control engineering applications. The structures equipped with piezoelectric patches are complex to model and usually require finite element approaches supplemented by model reduction. This study rigorously investigates the influence of mesh size, model reduction, boundary conditions (free and clamped), and sensor/actuator configuration (collocated and non-collocated) on the evaluation of transmission zeros of the piezoelectric structures. The numerical illustrations are presented for a thin rectangular plate equipped with a single pair of piezoelectric voltage sensor/ voltage actuator. Through the examples considered in this study, a link is presented between the static response (or static deflected shape) and the transmission zeros of the piezoelectric structures. This interesting observation forms the basis of: (i) a local mesh refinement strategy for computationally efficient estimation of the transmission zeros and (ii) a physical interpretation of the pole-zero pattern in the case of piezoelectric structures. The physical interpretation developed in this study helps in qualitatively explaining the pole-zero patterns observed for different configurations. It is also shown that this understanding of the relation between the static deformed shape and the transmission zeros can be used by the practitioners to modify the pole-zero pattern through a careful selection of the orientation and the size of the piezoelectric patches.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Pathak, Shashank;  Université Libre de Bruxelles - ULB > Beams
Piron, Dimitri  ;  Université de Liège - ULiège > Form. doct. sc. ingé. & techno. (aéro. & mécan. - Paysage)
Paknejad Seyedahmadian, Ahmad ;  Université de Liège - ULiège > ét. visiteur sc. appl.
Collette, Christophe  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Active aerospace struct. and adv. mecha. systems
Deraemaeker, Arnaud;  Université Libre de Bruxelles - ULB > BATir
Language :
English
Title :
On transmission Zeros of piezoelectric structures
Publication date :
09 November 2021
Journal title :
Journal of Intelligent Material Systems and Structures
ISSN :
1045-389X
Publisher :
SAGE Publications, New York, United States - New York
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 December 2021

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