Journal ArticleDOI
SPICE Modeling of a High-Power Terfenol-D Transducer Considering Losses and Magnetic Flux Leakage
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TLDR
An improved SPICE model for a high-power Terfenol-D transducer considering the aforementioned three losses and magnetic flux leakage (MFL) is proposed in this paper , which is implemented on the platform of LTspice software.Abstract:
Of great importance is modeling for transducer design and application to predict its performance and simulate key characteristics. The equivalent circuit modeling (ECM), one of the most powerful tools, has been widely used in the transducer industry and academia due to its outstanding merits of low simulation cost and easy usage for multi-field simulation in both time and frequency domains. Nevertheless, most of the existing equivalent circuit models for Terfenol-D transducers normally ignore three material losses, namely elastic loss, piezomagnetic loss, and magnetic loss. Additionally, the magnetic leakage due to the intrinsic poor magnetic permeability of Terfenol-D is rarely considered into the piezomagnetic coupling. Both loss effects will produce substantial errors. Therefore, an improved SPICE model for a high-power Terfenol-D transducer considering the aforementioned three losses and magnetic flux leakage (MFL) is proposed in this article, which is implemented on the platform of LTspice software. To verify the usefulness and effectiveness of the proposed technique, a high-power Terfenol-D tonpilz transducer prototype with a resonance frequency of around 1 kHz and a maximum transmitting current response (TCR) of 187.1 dB/1A/ μ Pa is built and tested. The experimental results, both in the air and water of the transducer, are in excellent agreement with the simulated results, which well validates our proposed modeling methods. read more
Citations
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Journal ArticleDOI
Loss Characterization of Giant Magnetostrictive Material Under Compressive Stress
TL;DR: In this paper , a longitudinal transducer was designed for complex parameters characterization of giant magnetostrictive material (GMM) under compressive stress, and the key three losses in GMM were successfully characterized using a multi-degree-of-freedom (MDOF) lumped parameter equivalent circuit model (LECM), meticulously incorporating the surface contact damping, stiffness and structural losses.
Journal ArticleDOI
Dynamic modeling of stack giant magnetostrictive actuator with magnetic equivalent network considering eddy current effect
TL;DR: Based on the flow path of the magnetic flux in SGMA, a magnetic equivalent network corresponding to quasistatic conditions is proposed taking flux leakage and fringing effect into account as mentioned in this paper .
Journal ArticleDOI
Multi-DOF Lumped-Parameter Modeling of High-Power Giant Magnetostrictive Transducer Coupled With Spatial Distribution of Magnetic Field
TL;DR: In this paper , a multi-degree-of-freedom (multi-DOF) lumped-parameter model was proposed for the high-power giant magnetostrictive transducers, which considers the magnetic flux leakage on both GMRs and permanent magnets.
Journal ArticleDOI
High-frequency magnetic energy loss based on J-A model for gallium iron alloy rod under variable stress conditions
TL;DR: In this paper , a high frequency dynamic model for rod gallium iron alloy taking into account compressive stress was developed, which can effectively predict the change of high frequency magnetic loss of materials under variable compressive stresses conditions.
References
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Journal ArticleDOI
Controlled-source analogous circuits and SPICE models for piezoelectric transducers
TL;DR: In this paper, transmission line analogous circuits for piezoelectric transducers are developed which employ controlled sources rather than the traditional transformer to model the coupling between the electrical and the mechanical systems.
Journal ArticleDOI
An accurate equivalent circuit for the unloaded piezoelectric vibrator in the thickness mode
TL;DR: In this paper, an equivalent circuit model for the unloaded piezoelectric vibrator in the thickness mode is presented, which contains two branches, the motional branch and the static branch, like the lossless resonator model.
Journal ArticleDOI
Implementation of Mason's Model on Circuit Analysis Programs
S.A. Morris,C.G. Hutchens +1 more
TL;DR: Application a la conception de transducteurs d'ultrasons, determination de leurs caracteristiques et application de leur application d'approximation de l'inevitableité.
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Experiment and simulation validated analytical equivalent circuit model for piezoelectric micromachined ultrasonic transducers
Katherine Smyth,Sang-Gook Kim +1 more
TL;DR: In this paper, an analytical Mason equivalent circuit is derived for a circular, clamped plate piezoelectric micromachined ultrasonic transducer (pMUT) design in 31 mode, considering an arbitrary electrode configuration at any axisymmetric vibration mode.
Journal ArticleDOI
SPICE model for lossy piezoelectric polymers
TL;DR: The simulated impedance and phase plots of polymer, working in thickness mode, have been compared with measured data and the equivalent circuit parameters are derived from analogies between lossy electrical transmission line and acoustic wave propagation.