Piezoelectric materials are smart materials widely used in transducers for various applications, converting mechanical energy into electrical energy. It is well-known that piezoelectric transducers can also be utilized for damping purposes. Lead zirconate titanate (Pb[ZrxTi1−x]O3, (0 ≤ x ≤ 1)), commonly abbreviated as PZT, serves as a piezoelectric transducer. It is efficiently employed in shunt damping, in conjunction with a suitable electrical network, to control structural vibrations. The primary advantages of the piezoelectric shunt damping technique lie in its simplicity, cost-effectiveness, robustness, and, generally, its ease of integration into the overall system. However, in the design of the shunt damping system model, accompanying electrical networks play important roles. Although various electrical network topologies have been explored in the literature for their effectiveness, RL shunt damping is one of the most commonly used methods. The issue arises when, in practical implementations, inductors may have impractical values, such as thousands of Henries. This limitation necessitates the use of active inductor circuits instead of relying on real passive inductors. In this study, gyrator-based active inductors employing operational transconductance amplifiers (OTAs) in a piezoelectric RL shunt circuit have been analyzed. The non-idealities of the OTA blocks have also been considered in the analyses. To validate the theoretical study, SPICE program simulation results have been provided in the paper and the effectiveness of the method has been discussed. ORCID NO: 0000-0001-5220-5188
Anahtar Kelimeler: Piezoelectric, shunt damping, OTA, PZT
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