摘要
针对无阀压电泵的截止性能和工作输出压力的不足,提出了一种新型矩形压电双晶片式主动阀压电泵.分析了主动阀压电泵的工作原理,设计、制作了两端夹持式矩形压电双晶片主动阀,建立了阀体的有限元模型,对阀体进行了有限元仿真与试验研究,分析了阀体的静态、动态特性,得到了主动阀阀体位移与不同影响因素之间的关系曲线,同时分析了主动阀阀体前四阶模态及对应的固有频率.搭建了试验测试系统并对主动阀阀体进行了相关试验测试,将试验测试结果与仿真分析结果进行了对比分析,试验验证了有限元仿真结果的可靠性.分析了影响压电泵流量的几个因素,对两端夹持式主动阀的结构参数进行了试验分析.该仿真分析及试验结果为主动阀压电泵阀体结构设计提供了理论指导.
Due to the shortage of blockage performance and output pressure of the valveless piezoelectric pump,a new type of piezoelectric pump with active valve actuated by rectangular piezoelectric bimorph was developed.Active valve based on both ends of rectangular piezoelectric bimorph clamped was designed and manufactured,finite element model of the valve body was set up,relevant finite element simulation and experimental studies were carried out,static and dynamic characteristics of the valve body were analyzed,the curves of valve body displacement affected by different influencing factors were obtained.Then,four ordered mode and natural frequency of valve body were analyzed.Comparing experimental results with simulation ones,the reliability of the finite element simulation results was verified.Several factors influencing on flow rate of piezoelectric pump were studied,and the structure parameters of active valve based on both ends clamped were discussed by experiment tests.The simulation analysis and experiment results provide theoretical foundation for the structure design of valve body with active valve.
出处
《排灌机械工程学报》
EI
2010年第3期224-227,237,共5页
Journal of Drainage and Irrigation Machinery Engineering
基金
国家自然科学基金资助项目(50775093)
教育科技创新工程重大项目培育资金资助项目(708028)
关键词
主动阀
压电泵
微流体
有限元
测试
active valve
piezoelectric pump
microfluid
finite element
measurement
