动态力环境下热成形FEP压电体的机电特性和实验传感器建模

IF 4.3 2区综合性期刊 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Sensors Journal Pub Date : 2025-06-24 DOI:10.1109/JSEN.2025.3581027

Gabriel Augusto Ginja;Mateus Carpena Neto;M. M. A. C. Moreira;M. L. M. Amorim;Volnei Tita;Ruy A. P. Altafim;Ruy A. C. Altafim;Miguel Velhote Correia;Alvaro A. A. Queiroz;Adriano A. G. Siqueira;João Paulo Pereira Do Carmo

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引用次数: 0

摘要

本研究探讨了用于力测量应用的热成型管状聚四氟乙烯压电极体的设计、制造和机电特性。压电驻极体是驻极体的一个子类，利用带电腔内的工程偶极子结构来表现压电特性。使用氟化乙丙烯（FEP）薄膜，通过热层压制成管状结构，随后极化形成高灵敏度和柔性压电极体。通过控制冲击测试、使用激振器系统的正弦静力输入和测量鞋垫来评估压电极体在真实动态环境中的电响应特性。冲击试验表明，该压电体在±3 V的最大电压幅值下具有20 ms的快速响应时间。频域分析确定了主要和次要带通范围，在400 Hz处观察到峰值灵敏度。振动台平稳试验表明，在200 hz和700 hz带宽范围内，信号的稳定灵敏度为53.87 mV/N。

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Electromechanical Characterization and Experimental Sensor Modeling of Thermoformed FEP Piezoelectrets for Dynamic Force Environments

This study explores the design, fabrication, and electromechanical characterization of thermoformed tubular Teflon piezoelectrets for force measurement applications. Piezoelectrets, a subclass of electrets, leverage engineered dipole configurations within charged internal cavities to exhibit piezoelectric properties. Using fluorinated ethylene propylene (FEP) films, tubular structures were fabricated through thermal lamination and subsequently polarized to form highly sensitive and flexible piezoelectrets. The electrical response was characterized by controlled impact tests, sinusoidal stationary force inputs using a shaker system and an instrumented insole to evaluate the piezoelectret in a real dynamic environment. The impact test revealed that the piezoelectret exhibits a rapid response time of 20 ms with a maximum voltage amplitude of ±3 V. The frequency-domain analysis identified primary and secondary bandpass ranges, with peak sensitivity observed at 400 Hz. The stationary test with a shaker showed a steady sensitivity of 53.87 mV/N for signals within the 200- and 700-Hz bandwidths.

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来源期刊

IEEE Sensors Journal 工程技术-工程：电子与电气

CiteScore

7.70

自引率

14.00%

发文量

2058

审稿时长

5.2 months

期刊介绍： The fields of interest of the IEEE Sensors Journal are the theory, design , fabrication, manufacturing and applications of devices for sensing and transducing physical, chemical and biological phenomena, with emphasis on the electronics and physics aspect of sensors and integrated sensors-actuators. IEEE Sensors Journal deals with the following: -Sensor Phenomenology, Modelling, and Evaluation -Sensor Materials, Processing, and Fabrication -Chemical and Gas Sensors -Microfluidics and Biosensors -Optical Sensors -Physical Sensors: Temperature, Mechanical, Magnetic, and others -Acoustic and Ultrasonic Sensors -Sensor Packaging -Sensor Networks -Sensor Applications -Sensor Systems: Signals, Processing, and Interfaces -Actuators and Sensor Power Systems -Sensor Signal Processing for high precision and stability (amplification, filtering, linearization, modulation/demodulation) and under harsh conditions (EMC, radiation, humidity, temperature); energy consumption/harvesting -Sensor Data Processing (soft computing with sensor data, e.g., pattern recognition, machine learning, evolutionary computation; sensor data fusion, processing of wave e.g., electromagnetic and acoustic; and non-wave, e.g., chemical, gravity, particle, thermal, radiative and non-radiative sensor data, detection, estimation and classification based on sensor data) -Sensors in Industrial Practice