|
|
Dynamic model and its mathematic description on piezoelectric pump with passive valves |
HE Xiu-hua, JIANG Quan-ying, ZHANG Rui, YANG Song |
School of Energy Resources & Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
|
|
Abstract Both the dynamic model and its mathematic descriptions were firstly given for a piezoelectric pump with passive valves in this article.Furthermore,by means of the solution procedure of the equations and its discussion,the physical phenomenon of the pump′s flow steep decrease with its frequency increment was proved.The authors pointed out that the phenomenon mentioned above was related to pump′s membrane characteristic frequencies.The phenomenon has relations to two characteristic frequencies,ω2n1 and ω22,while the equivalent stiffness follows k3<k1,and the theoretical maximum flow depends directly on the characteristic frequency ω2n1 and does not on ω21.The theoretical maximum flow may depend on ω21 as k1<k3.This research would provide some valuable reference and recommendation on the design of a piezoelectric pump with passive valves.piezoelectric pump;passive valve;piezoelectric vibrator;pump membrane;dynamic model
|
Received: 08 August 2013
|
|
|
|
[1] 王秀红.微泵研究进展[J].排灌机械,2003,21(1):5-8[2] 吴博达,林敬国,曾平.压电泵增频流量骤减现象的解释[J].压电与声光,2006,28(5):588-590[3] 曾平,林敬国,程光明.整体开启阀微型压电泵实验研究[J].压电与声光,2006,28(5):594-596[4] 阚君武,杨志刚,华顺明.有阀压电薄膜泵性能研究[J].农业机械学报,2003,34(5):84-87[5] Gerlach T,Wurmus H.Working principle and perfor-mance of the dynamic micropump[J].Sensors and Actuators A-Physical,1995,50(1):135-140 |
|
|
|