压电反推泵振动等效模型的阀体动力学分析  

Dynamical Analysis of Valve Based on the Equivalent Model of Piezoelectric Retro-jet Pump

作　　者：方科[1] 李欣欣[1] 程光明[1] 杨志刚[1] 曾平[1] 

机构地区：[1]吉林大学机械科学与工程学院,吉林长春130025

出　　处：《机械设计与研究》2007年第2期98-101,共4页Machine Design And Research

基　　金：国家863高技术发展计划资助项目(No.2002AA43250)

摘　　要：压电反推泵是一种将压电流体驱动技术和仿生技术、喷流推进技术相结合的新型喷水推进装置。利用振动力学建立了单阀单入口压电反推泵的振动等效模型,并对阀体进行了动力学分析。结果表明:阀和流体的等效阻尼特性对反推泵的输出性能有较大影响,减小泵腔体积和阀体刚度、增大阀体质量都有利于阀体的开启性能,从而提高泵的输出能力。该动力学参数分析结果为反推泵的设计提供了理论指导。Integrating the technologies of hydro-piezoelectric drive, water jet thrust and bionics, this paper introduces a novel piezoelectric water jet thrust. The dynamic model of piezoelectric retro-jet pump with single valve and single inlet has been built using the theory of viberation dynamics and the valve. The result is shown that the equivalent damping of fluid and valve can influence the output behavior of the piezoelectric retro - jet pump. Reducing the volume of pump cavity and valve rigidity or increasing the mass of valve are all helpful to improve the capability of pump. Thus the thearetical guidance has been offered for designing such pump on the research result of the dynamic parameters.

关 键 词：压电薄膜 喷水推进 等效模型 振动力学 阀 

分 类 号：TH137.33[机械工程—机械制造及自动化]