An Experimental Study of a Piezoelectric Metastructure With Adaptive Resonant Shunt Circuits

Silva, Tarcísio Marinelli Pereira; Clementino, Marcel A.; Sousa, Vagner Candido de; Marqui, Carlos De

doi:10.1109/tmech.2020.2966463

Cited by 26 publications

(8 citation statements)

References 39 publications

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“…In terms of the mechanical system, when the excitation frequency reaches the intrinsic frequency, the system amplitude increases significantly, absorbing more energy from the surrounding environment. At this time, the excitation input energy reaches its largest value, and the system exhibits obvious displacement resonance, which provides great convenience for the recycling of energy. , The essence of resonance in a circuit system is that the energy of the electric field in the capacitor and the energy of the magnetic field in the inductor are converted to each other, increasing and decreasing to fully compensate for each other. , The distinctive feature of resonant circuits is their ability to select frequencies allowing useful frequency components to be retained and useless ones to be filtered out. It is extremely suitable for signal transmission and is indispensable in various radio devices, equipment, and measuring instruments.…”

Section: Mechanical Systems For Tengsmentioning

confidence: 99%

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

et al. 2023

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Serious climate changes and energy-related environmental problems are currently critical issues in the world. In order to reduce carbon emissions and save our environment, renewable energy harvesting technologies will serve as a key solution in the near future. Among them, triboelectric nanogenerators (TENGs), which is one of the most promising mechanical energy harvesters by means of contact electrification phenomenon, are explosively developing due to abundant wasting mechanical energy sources and a number of superior advantages in a wide availability and selection of materials, relatively simple device configurations, and low-cost processing. Significant experimental and theoretical efforts have been achieved toward understanding fundamental behaviors and a wide range of demonstrations since its report in 2012. As a result, considerable technological advancement has been exhibited and it advances the timeline of achievement in the proposed roadmap. Now, the technology has reached the stage of prototype development with verification of performance beyond the lab scale environment toward its commercialization. In this review, distinguished authors in the world worked together to summarize the state of the art in theory, materials, devices, systems, circuits, and applications in TENG fields. The great research achievements of researchers in this field around the world over the past decade are expected to play a major role in coming to fruition of unexpectedly accelerated technological advances over the next decade.

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Section: Mechanical Systems For Tengsmentioning

confidence: 99%

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

et al. 2023

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“…where R1, R2, R3, R4, and C1 are resistors and capacitors values. To realize digital tuning of the synthetic inductance, resistor 𝑅 2 is replaced with the 256-bit digital potentiometer in series with a standard resistor to provide a resistance offset [18][19]. The digital potentiometer is interfaced with an Arduino MEGA 2560 microcontroller unit.…”

Section: Experimental Investigationsmentioning

confidence: 99%

Elastic wave manipulation implemented using a locally resonant metasurface with digitally tunable piezoelectric shunts

Dupont¹,

Wang²,

Christenson³

et al. 2023

Active and Passive Smart Structures and Integrated Systems XVII

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A tunable metasurface consisting of an array of piezoelectric unit cells is demonstrated to anomalously refract incident elastic wavefronts along a target direction. Each surface bonded transducer (PZT) is shunted with an individually calibrated synthetic inductor to form a local resonator, which is then tuned to modify the local dispersive characteristics of each unit cell and implement discrete phase shifts. The analog synthetic inductances are integrated with digital potentiometers to realize online tunability, allowing the metasurface to be recalibrated to accommodate different incident wave frequencies or target angles of refraction without requiring any physical alteration of the host structure. A microcontroller unit (MCU) then reads the stored empirical data and designates the appropriate settings for each digital potentiometer in order to realize the targeted waveguiding behavior for a specified incident wave frequency.

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“…Those techniques, all based on piezoelectric transduction, were applied to an electromagnetic shunt for the first time in [20]. Since then, we can notice three interesting updates with analog electronic circuits, in the case of piezoelectric shunts [21,22,23] (with a fully analog circuit including junction gate field-effect transistors in the first, a photoresistive opto-isolator with a phase locked loop processor in the second and a digital potentiometer in the third). The so-called sweeping and switching technique, that uses an adaptive piezoelectric shunt impedance, was also proposed for broadband vibration damping (see [24] and reference therein).…”

Section: Introductionmentioning

confidence: 99%

Tunable electromagnetic resonant shunt using pulse-width modulation

Auleley

Giraud-Audine

Mahé

et al. 2021

Journal of Sound and Vibration

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An Experimental Study of a Piezoelectric Metastructure With Adaptive Resonant Shunt Circuits

Cited by 26 publications

References 39 publications

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

Recent Advances in Triboelectric Nanogenerators: From Technological Progress to Commercial Applications

Elastic wave manipulation implemented using a locally resonant metasurface with digitally tunable piezoelectric shunts

Tunable electromagnetic resonant shunt using pulse-width modulation

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