Analysis and Design of Capacitive Parametric Ultrasonic Transducers for Efficient Ultrasonic Power Transfer Based on a 1-D Lumped Model
Analysis and Design of Capacitive Parametric Ultrasonic Transducers for Efficient Ultrasonic Power Transfer Based on a 1-D Lumped Model
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基于一维集总模型的电容式参数超声波换能器的分析和设计，用于高效超声波功率传输
DOI：
10.1109/tuffc.2018.2866058
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Degertekin, F. Levent
中科院分区：
文献类型：
--
作者：
Surappa, Sushruta;Tao, Molei;Degertekin, F. Levent
人们对医疗植入物、传感器网络和消费电子产品的无线电力传输越来越感兴趣。无源电容参数超声换能器（CPUT）可以适用于这些应用，因为它不需要直流偏置或永久电荷。本文建立了CPUT的一维集总参数模型，对其运行进行了研究，并探讨了电力传输应用的相关设计参数。将CPUT建模为超声驱动活塞耦合到RLC谐振器，从而形成两个耦合非线性常微分方程系统。Simulink与系统的解析近似一起使用，以获得横跨电容器的电压和活塞的位移。评估了参数共振阈值和超声-电转换效率，并研究了这些性能指标与负载电阻、输入超声强度、强迫频率、电极覆盖面积、间隙高度和机械q因子的依赖关系。在此基础上，提出了高效功率传输的设计准则。在这些结果的指导下，通过COMSOL仿真得到了实际的器件设计。最后，对CPUT在空气中应用的可行性进行了预测，为超声波无线能量传输、能量收集和传感的进一步研究奠定了基础。
There is an increasing interest in wireless power transfer for medical implants, sensor networks, and consumer electronics. A passive capacitive parametric ultrasonic transducer (CPUT) can be suitable for these applications as it does not require a dc bias or a permanent charge. In this paper, we present a 1-D lumped parameter model of the CPUT to study its operation and investigate relevant design parameters for power transfer applications. The CPUT is modeled as an ultrasound-driven piston coupled to an RLC resonator resulting in a system of two coupled nonlinear ordinary differential equations. Simulink is used along with an analytical approximation of the system to obtain the voltage across the capacitor and displacement of the piston. Parametric resonance threshold and ultrasound-to-electrical conversion efficiency are evaluated, and the dependence of these performance metrics on the load resistance, input ultrasound intensity, forcing frequency, electrode coverage area, gap height, and the mechanical Q-factor are studied. Based on this analysis, design guidelines are proposed for highly efficient power transfer. Guided by these results, practical device designs are obtained through COMSOL simulations. Finally, the feasibility of using the CPUT in air is predicted to set the foundation for further research in ultrasonic wireless power transfer, energy harvesting, and sensing.
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影响因子：
3.6
作者：
Arbabian, Amin;Chang, Ting Chia;Weber, Marcus J.
通讯作者：
Weber, Marcus J.
DOI：
10.1016/j.cnsns.2018.11.003
发表时间：
2018-06
期刊：
Commun. Nonlinear Sci. Numer. Simul.
影响因子：
--
作者：
Molei Tao
通讯作者：
Molei Tao
基于二维驻极体的谐振微能量采集器
DOI：
10.1109/memsys.2009.4805565
发表时间：
2009
期刊：
2009 IEEE 22nd International Conference on Micro Electro Mechanical Systems
影响因子：
--
作者：
U. Bartsch;J. Caspar;O. Paul
通讯作者：
O. Paul
P1B-10 用于高强度聚焦超声 (HIFU) 的电容式微机械超声换能器 (CMUT) 的优势
DOI：
--
发表时间：
2007
期刊：
2007 IEEE Ultrasonics Symposium Proceedings
影响因子：
--
作者：
S. H. Wong;M. Kupnik;Kim Butts;B. Khuri
通讯作者：
B. Khuri