排灌机械工程学报2024，Vol.42Issue(8)：764-770,7.DOI:10.3969/j.issn.1674-8530.23.0079
基于放大机构的压电叠堆泵设计分析及试验
Design analysis and test of piezoelectric stack pump based on amplification mechanism
摘要
Abstract
In order to overcome the shortcoming of small output displacement of the piezoelectric stack and limited pumping capacity of the pump oscillator,a piezoelectric stack pump based on an amplifica-tion mechanism was proposed by integrating the performance advantages of lever hinge and triangular hinge structures.Theoretical amplification factor analysis,ANSYS simulation analysis,fluid-solid cou-pling analysis,and pumping performance experimental measurements were conducted.The results show that the simulation magnification of the piezoelectric stack pump is 20.3,with a relative error of 11.7％from the theoretically calculated value.ANSYS simulation analysis shows that the bending frequency corresponding to the second-order frequency of the pump oscillator is 1 356.30 Hz,and the fluid-solid coupling analysis of the piezoelectric stack pump at this operation frequency shows that the pumping flow rate of the pump is 41.78 mL/min.Based on the above research and analysis,the piezoelectric stack pump prototype was trial-produced and a pumping performance test was carried out.It is found that under a driving voltage of 50 V,the measured pumping flow rate is 32.50 mL/min and the relative error between the simulation flow and the test flow is 28.5％,and the cause of the error is then ana-lyzed,for which the maximum pressure difference is 13.7 mm.The test results have good stability,which verifies the reliability of the simulation data,and provides a reliable reference for further research on the new amplification mechanisms and piezoelectric stack pumps.关键词
压电叠堆/杠杆三角放大机构/流固耦合/有限元分析/泵送性能试验Key words
piezoelectric stack/lever triangle amplification mechanism/fluid-solid coupling/finite element analysis/pump performance test分类
农业科技引用本文复制引用
陈凤,赵凯,纪晶,胡笑奇,杨晓斌,胡彩旗..基于放大机构的压电叠堆泵设计分析及试验[J].排灌机械工程学报,2024,42(8):764-770,7.基金项目
国家自然科学基金资助项目(31971801) （31971801）
山东省自然科学基金资助项目(ZR2020ME252,ZR2020ME250) （ZR2020ME252,ZR2020ME250）
