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

Gyoung-Ja Lee, Won-Ju Hwang, Jin-Ju Park and Min-Ku Lee
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Gyoung-Ja Lee: Nuclear Materials Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Korea
Won-Ju Hwang: 40, Imi-ro, Uiwang-si, Gyeonggi-do 16006, Korea
Jin-Ju Park: Nuclear Materials Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Korea
Min-Ku Lee: Nuclear Materials Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Korea

Energies, 2019, vol. 12, issue 7, 1-11

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.

Keywords: accelerometer; compression-type; finite element method; piezoelectric analysis; meta-model (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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