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Study of Sensitive Parameters on the Sensor Performance of a Compression-Type Piezoelectric Accelerometer Based on the Meta-Model

1
Nuclear Materials Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Korea
2
40, Imi-ro, Uiwang-si, Gyeonggi-do 16006, Korea
*
Author to whom correspondence should be addressed.
Energies 2019, 12(7), 1381; https://doi.org/10.3390/en12071381
Received: 14 February 2019 / Revised: 26 March 2019 / Accepted: 3 April 2019 / Published: 10 April 2019
(This article belongs to the Special Issue Piezoelectric Materials)
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Abstract

Through a numerical analytical approach based on piezoelectric analysis and meta-modeling, this study investigated the effect of the component design of an accelerometer sensor on sensitivity and resonance frequency. The results of the study confirmed that the resonance frequency obtained from the piezoelectric analysis was almost the same as the experimental value of the resonance frequency obtained from the fabricated sensing module and proved the validity of the piezoelectric analysis using a finite element method. Moreover, the results of examining the influence of the component design on the resonance frequency and electrical potential suggested that the diameter and height of the head (seismic mass) had the greatest influence. As the diameter and height of the head increased, the sensitivity increased, but the resonance frequency decreased, which indicates that it is necessary to select an appropriate mass to optimize the sensor performance. In addition, the increase in tail height and epoxy thickness had a positive effect on both the resonance frequency and electric potential, and the base diameter had a negative effect on both of them. View Full-Text
Keywords: accelerometer; compression-type; finite element method; piezoelectric analysis; meta-model accelerometer; compression-type; finite element method; piezoelectric analysis; meta-model
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Lee, G.-J.; Hwang, W.-J.; Park, J.-J.; Lee, M.-K. Study of Sensitive Parameters on the Sensor Performance of a Compression-Type Piezoelectric Accelerometer Based on the Meta-Model. Energies 2019, 12, 1381.

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