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用于提升性能的体压电加速度传感器的设计优化

Design Optimization of Bulk Piezoelectric Acceleration Sensor for Enhanced Performance.

作者信息

Lee Min-Ku, Han Seung-Ho, Park Kyu-Hyun, Park Jin-Ju, Kim Whung-Whoe, Hwang Won-Ju, Lee Gyoung-Ja

机构信息

Sensor System Research Team, Korea Atomic Energy Research Institute, Daejeon 34057, Korea.

#301, 8, Suseong-ro, Gwonseon-gu, Suwon-si, Gyeonggi-do 16426, Korea.

出版信息

Sensors (Basel). 2019 Jul 31;19(15):3360. doi: 10.3390/s19153360.

DOI:10.3390/s19153360
PMID:31370167
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6696384/
Abstract

While seeking to achieve high performances of a bulk piezoelectric acceleration sensor, we investigated the behavior of the design variables of the sensor components and optimized the sensor design using a numerical simulation based on piezoelectric analysis and metamodeling. The optimized results demonstrated that there was an exponential dependency in the trade-off relation between two performance indicators, the electric voltage and the resonant frequency, as induced by the design characteristics of the sensor. Among the design variables, a decrease in the base height and epoxy thickness and an increase in the piezo element's inner diameter had a positive effect on two performances, while the head dimensions (diameter and height) exhibited the opposite effect on them. The optimal sensor designs are proposed within the valid range of resonant frequency (25-47.5 kHz). Our redesign of a commercial reference sensor improved the resonant frequency by 13.2% and the electric voltage by 46.1%.

摘要

在寻求实现体压电加速度传感器的高性能时，我们研究了传感器组件设计变量的行为，并基于压电分析和元建模使用数值模拟对传感器设计进行了优化。优化结果表明，由于传感器的设计特性，在两个性能指标（电压和谐振频率）之间的权衡关系中存在指数依赖性。在设计变量中，基座高度和环氧树脂厚度的减小以及压电元件内径的增加对两种性能有积极影响，而头部尺寸（直径和高度）对它们有相反的影响。在谐振频率的有效范围内（25 - 47.5 kHz）提出了最佳传感器设计。我们对商用参考传感器的重新设计使谐振频率提高了13.2%，电压提高了46.1%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/c26113cb1b5d/sensors-19-03360-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/7ec2ad1f3319/sensors-19-03360-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/90f0920db726/sensors-19-03360-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/e5d281ca5601/sensors-19-03360-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/ed2e759ebb2f/sensors-19-03360-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/f3f57336e4cd/sensors-19-03360-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/c26113cb1b5d/sensors-19-03360-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/7ec2ad1f3319/sensors-19-03360-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/90f0920db726/sensors-19-03360-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/e5d281ca5601/sensors-19-03360-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/ed2e759ebb2f/sensors-19-03360-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/f3f57336e4cd/sensors-19-03360-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e76c/6696384/c26113cb1b5d/sensors-19-03360-g006.jpg

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