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首页> 外文会议>Conference on Smart Structures and Materials 2000 Active Materials: Behavior and Mechanics 6-9 March 2000 Newport Beach, USA >Piezoelectrically Actuated Miniature Peristaltic Pump
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Piezoelectrically Actuated Miniature Peristaltic Pump

机译：压电驱动微型蠕动泵

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摘要

Increasingly NASA experiments, instruments and applications are requiring pumps that are miniature and consume low power. To address this need, a piezoelectrically actuated pump is being developed. This pump employs a novel volume displacing mechanism using flexural traveling waves that act peristaltically eliminating the need for values or physically moving parts. finite element model was developed using ANSYS to predict the resonance frequency of the vibrating mode for the piezopump driving stator. The moel also allows determining simulatneously the mode shapes that are associated with the various resonance frequencies. This capability is essential for designing the pump size and geoemtry. To predict and optimize the pump efficiency, which is determined by the volume of pumping chambers, the model was modified to perform harmonic analysis. Current capability allows the determination of he effect of such design parameters as pump geoemtry, construction materials and operating modes on the volume of the chambers that is available between the peaks and valleys of the waves. Experimetns were conducted using a breadboard of the piezopump and showed water-pumping rate of about 3.0 cc/min. The perofrmance of pump is continuing to be modified to nehance the performance and efficiency.
机译：NASA的实验，仪器和应用越来越多地需要微型且消耗低功率的泵。为了满足该需求，正在开发压电致动泵。该泵采用了一种新颖的容积移动机构，该机构利用弯曲行波来蠕动，从而消除了对数值或物理移动部件的需求。使用ANSYS开发了有限元模型，以预测压电泵驱动定子振动模式的共振频率。莫尔还允许模拟地确定与各种谐振频率相关的模式形状。此功能对于设计泵的尺寸和几何形状至关重要。为了预测和优化由泵室容积确定的泵效率，对该模型进行了修改以执行谐波分析。当前的能力可以确定诸如水泵地质，结构材料和工作模式等设计参数对波峰和波谷之间可用的腔室容积的影响。实验是使用Piezopump的面包板进行的，抽水速度约为3.0 cc / min。泵的性能正在不断改进，以提高性能和效率。

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