单腔体压电泵输出性能分析

发布时间：2018-04-01 11:14

本文选题：压电泵　切入点：单腔　出处：《机械设计与制造》2017年01期

【摘要】：为验证理论上计算得到单腔体压电泵输出能力的准确性,将应用理论公式计算得到的单腔压电泵的输出流量与输出压力值与试验获得的结果进行比较。结果显示,在(40~400)Hz工作频率范围内,当单腔体压电输送液体水时,在小于第一个最佳工作频率点100Hz工作时,由理论公式计算获得输出流量与试验测试结果比较接近,输出流量和工作频率成很好的线性关系,而当工作频率大于第二个最佳工作频率点160Hz时,二者比较相差很大,理论计算公式不能准确计算压电泵的实际输出;试验获得输出压力值为理论计算压力值的(4~5)倍。当输送气体空气时,在输出流量方面二者比较接近,在最佳工作频率点附近工作时压电振子会发生共振,使实际输出流量大于理论计算结果;在小于输出流量最佳工作频率点220Hz工作时,实际输出压力值与理论计算值比较接近。
[Abstract]:In order to verify the accuracy of the theoretical calculation of the output capacity of the piezoelectric pump with a single cavity, the output flow rate and the output pressure value of the piezoelectric pump with single cavity calculated by the theoretical formula are compared with the experimental results. In the operating frequency range of 40,400kHz, when a single cavity is used to deliver liquid water, when 100Hz is less than the first optimum working frequency point, the output flow rate calculated by the theoretical formula is close to the experimental results. There is a good linear relationship between the output flow rate and the working frequency, but when the working frequency is larger than the second optimal working frequency point 160Hz, the difference between the two is very big, the theoretical formula can not accurately calculate the actual output of piezoelectric pump. The experimental results show that the output pressure value is 5 times that of the theoretical pressure value. When the air is transported, the output flow rate is close to that of the piezoelectric vibrator, and the piezoelectric vibrator resonates when working near the optimum working frequency. The actual output flow is larger than the theoretical calculation result, and the actual output pressure value is close to the theoretical calculation value when 220Hz is less than the optimal working frequency point of the output flow rate.
【作者单位】：吉林化工学院机电工程学院;
【基金】：吉林省教育厅“十二五”科学技术研究项目(2012286) 吉林市科技发展计划项目(201112208)
【分类号】：TH38

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