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Equivalent Circuit Modeling for a Valveless Piezoelectric Pump

机译:无阀压电泵的等效电路建模

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摘要

Various kinds of the models had been proposed to explain the relationship between the performance and the structural parameters of valveless piezoelectric pumps, so as to evaluate the functional performance such devices. Among the models, the equivalent circuit model, which converts the multi-field problem of a valveless piezoelectric pump system into a simple circuit problem, is the most simple and clear one. Therefore, the proposed structure and working principle of the valveless piezoelectric pump with multistage Y-shape treelike bifurcate tubes are analyzed; then, the equivalent circuit model of the valveless piezoelectric pump is established based on the working principles of this pump and liquid-electric analogy theory. Finally, an experimental study of the pump is carried out, with a comparative analysis of the experimental results and the simulation results of the generated equivalent circuit. The experimental results show that with a driving voltage of 100 V and frequency of 6 Hz, the maximum flow rate of the valveless piezoelectric pump is 1.16 mL/min. Meanwhile, the output current of equivalent circuit also reaches its peak at the frequency of 6 Hz, therefore, indicating a good predictive ability of this model in calculating the maximum output flow rate and best working frequency of valveless piezoelectric pumps.
机译:提出了各种模型来解释无阀压电泵的性能与结构参数之间的关系,以评估这种装置的功能性能。在这些模型中,将无阀压电泵系统的多场问题转换为简单电路问题的等效电路模型是最简单明了的模型。因此,分析了多级Y形树状分叉管的无阀压电泵的结构和工作原理。然后,根据该泵的工作原理和液电类比理论,建立了无阀压电泵的等效电路模型。最后,对泵进行了实验研究,并对实验结果和产生的等效电路的仿真结果进行了比较分析。实验结果表明,在100 V的驱动电压和6 Hz的频率下,无阀压电泵的最大流量为1.16 mL / min。同时,等效电路的输出电流也以6 Hz的频率达到峰值,因此,表明该模型在计算无阀压电泵的最大输出流量和最佳工作频率方面具有良好的预测能力。

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