A new method for designing piezo transducers with connected two-phase electrode

Donoso, Alberto; Aranda, Ernesto; Ruiz, David

doi:10.1016/j.compstruc.2022.106936

Cited by 12 publications

(5 citation statements)

References 22 publications

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“…It should be noted that the electrode separation line is not completely following the polarization profile due to existence of islands in optimized polarity. Readers are referred to works of Donoso et al [33], [34] to have constraint on the electrode connectivity. The responses of the vPEHs to a multi-directional force are illustrated in Fig.…”

Section: Comsol Simulationmentioning

confidence: 99%

Structural Design and Frequency Tuning of Piezoelectric Energy Harvesters Based on Topology Optimization

Homayouni-Amlashi

Rakotondrabe

Mohand-Ousaid

2023

2023 IEEE International Conference on Robotics and Automation (ICRA)

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Comsol Simulationmentioning

confidence: 99%

Structural Design and Frequency Tuning of Piezoelectric Energy Harvesters Based on Topology Optimization

Homayouni-Amlashi

Rakotondrabe

Mohand-Ousaid

2023

2023 IEEE International Conference on Robotics and Automation (ICRA)

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“…Researchers actively explore ways to enhance manufacturability while preserving some of the performance improvements [24,25]. This has applications not only in the design of piezoelectric sensors [26][27][28], but also in manufacturing parts in molding and additive manufacturing processes [29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

“…The electrode profile of piezoelectric modal sensors is a critical aspect that needs to be simplified for practicality without significantly sacrificing performance. Donoso et al [26][27][28] address the issue of fabricating piezo-modal transducers. The study [26] emphasizes the need for electrodes to include null-polarity phases (also known as gap-phases) of a certain width between areas of opposite polarity during manufacturing to prevent short-circuiting and ensure proper functioning.…”

Section: Introductionmentioning

confidence: 99%

“…To simplify electrode phase connectivity and required wiring schemes, this work introduces a connectivity constraint on electrode profiles. Similarly, in [28], the authors present a new systematic method for designing two-phase electrodes while maintaining optimal behavior by imposing connectivity constraints on each phase so that only one wire per phase is necessary.…”

Section: Introductionmentioning

confidence: 99%

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Simplification of Electrode Profiles for Piezoelectric Modal Sensors by Controlling Gap-Phase Length

Martín-Nieto,

Castaño,

Horta Muñoz

et al. 2024

Mathematics

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This paper presents a method to optimize and simplify the electrode profile of a piezoelectric modal sensor. At the same time that the electrode profile is optimized to maximize the charge, a null-polarity phase is introduced. This gap-phase is modeled using the normalized norm of the spatial gradient of the polarity profile along with a two-step filtering and projection technique. High-order vibration modes generate a complex polarization profile that makes the manufacturing process difficult. The novelty of the proposed method is the addition of a constraint on the length of the interface in the topology optimization problem. This constraint simplifies the optimal designs and facilitates the fabrication process. Several examples show the simplified electrode profile that maximizes the electrical charge produced by a vibration mode, while reducing the number of different polarization regions by means of the gap-length constraint.

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“…The problem proposed lacks constraints over the shape of the electrodes obtained, as this is out of the scope of the paper. If the reader is interested in taking into consideration manufacturing constraints, the method proposed in [ 21 ] can be implemented. In this paper, the authors present an eigenvalue problem based on the graph theory to ensure the connectivity of each of the phases.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Polarization Profile of Conical-Shaped Shells Piezoelectric Sensors

Muñoz

Ruiz

2022

Sensors

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Conical shell structures are frequently submitted to severe static and dynamic mechanical loads that can result in situations that affect the service of the systems that are part of, or even cause catastrophic failures. For this reason, a common solution is to design an active deformation control system, usually using piezoelectric patches strategically distributed along the surface of the shell structure. Moreover, these elements may be part of an energy recovery system. This paper details the methodology to topologically optimize the placement of piezoelectric elements through a characteristic function, analysing static and free vibration loading cases by means of the finite element method. Then, the optimal arrangement of the electrode with different polarization profiles is distributed throughout the entire structure. The nature of the loading cases studied corresponds to a general situation where static loads and dynamics vibration are considered. The objective function of the problem only depends linearly on the displacement fields, and therefore, the optimal electrode profile can be obtained for any combination of loads. As a consequence, this technique allows for maximising the electric charge obtained, which results in a greater capacity for monitoring, actuation and/or energy harvesting.

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A new method for designing piezo transducers with connected two-phase electrode

Cited by 12 publications

References 22 publications

Structural Design and Frequency Tuning of Piezoelectric Energy Harvesters Based on Topology Optimization

Structural Design and Frequency Tuning of Piezoelectric Energy Harvesters Based on Topology Optimization

Simplification of Electrode Profiles for Piezoelectric Modal Sensors by Controlling Gap-Phase Length

Optimization of the Polarization Profile of Conical-Shaped Shells Piezoelectric Sensors

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