| Piezoelectric pump is a kind of new transmission fluid device driven by the piezoelectric transducer components. Piezoelectirc pump is also a new kind of superior smart materials actuator. It is a good try and a profound innovation that using piezoelectric ceramic materials as fluid pump actuator driving components. Drive source, transmission-mechanism and pump body of the tradition fluid pump be made one in piezoelectric pump. The delicate structure and low energy consumption , precision control , quicke response, no magnetic interference make piezoelectric pump has brightening prospects in high-tech area. In recent decades, piezoelectric pump was expanded by leaps and bounds. Focus of of piezoelectric pump research is on piezoelectric pump structure and manufacturing engineering. However presses the electric pump the research mostly only isconcentrates in presses the electric pump in the structure way and themanufacture craft, the researcher to presses the electric pump theperformance test certainly not to conduct the thorough research. Onlyhas the thorough research design parameter to press the electric pumpperformance the influence, can be better to presses the electric pumpthe examination project to determine and the test method conducts theresearch and the discussion. Therefore, this article studies in thepredecessor in the foundation, discussed has pressed the electric pumptest technology and the method research.1. PrefaceIn recent decades, the study on the piezoelectric pump has transfored from the structure and principle to the market-oriented direction. Nowadays, the research and development trends of piezoelectric pump are roughly two directions: the one is to high-pressure, large piezoelectric pump flow direction; the other is to the size miniaturization, less power consumption, high output accuracy direction. After more than 20 years development, piezoelectric pump has been coming out of the laboratory and gradually applied to practical workplace with the bright market demand prospects. Compared with the traditional pump, piezoelectric pump has many unparalleled advantages: precision micro flow control, no magnetic interference from the outside world but also magnetic interference, the delicate structure and low energy consumption. There are many effective application cases of piezoelectric pump in the areas of micro precision delivery systems, high-power high-density integrated chip cooling, fuel cells, and blood circulation system. Japan had put the piezoelectric pump on the market. These pumps can be used in blood transmission, small parts cleaning, adhesive spray, chemical analysis and other related areas. The domestic piezoelectric pump market has not yet emerged. Jilin University, Qinghua University and Nanjing University of Aeronautics and Astronautics and other colleges and universities are sparing no effort in promoting the process of piezoelectric pump.2. The basic theory of piezoelectric pumpBased on the reverse piezoelectric effect of the piezoelectric materials, piezo- electric pump is directly or indirectly using the mechanical deformation of the piezoelectric ceramic components to change the pump chamber volume and pressure. Through the one-way valve opened and closed, the piezoelectric pump realizes an orderly one-way flow of fluid. As the basic components, as well as electrical energy conversion components, the performance of piezoelectric ceramic components determines the performance of piezoelectric pump. The basic concept of the piezoelectric effect, the basic physical properties of the piezoelectric material The vibration modes, the equivalent circuit resonance characteristics were analyzed. The theory on the basis of piezoelectric actuators was expounded.3. Theoretical analysis on the output properties of the piezoelectric pumpUsing the basic knowledge of hyudrodynamics, the performance of piezoelectric pump influenced by the viscosity of the liquid was theoretical analysis. The basic concepts about the fluid movement, piezoelectric pump fluid flow and the basic equation of state were explored. By integration of theory analysis and finite element method,how the propping manner, cushion chamber,distance between valve hole and valve border determines piezoelectric pump performance has been analysed. Theory optimization was made to piezoelectric pump structure aimed at reducing the liquid resistance. On this basis, the author analysed the piezoelectric pump water head loss. Meanwhile, the finite element analysis of the piezoelectric pump showed the flow property of piezoelectric pump, pressure distribution by the ANSYS software.And the author brought improvement of piezoelectric pump structure forward.4. Presses the electric pump testing sequence and the experimentaltechnique research Unifies the fluid-flow pump class product the examinationproject and the test method, through to presses the electric pump theactuation basic theory and the performance theoretical analysis, topressed the electric pump the examination project determination andthe test method research proposed the constructive plan. Has providedthe reference for next stereotypia product leaving the plant with thepattern examination.5. Experimental research on the output properties of the piezoelectric pump Aimed at reducing the liquid resistance and increasing the flow rate, a hard and laboratory experiment was put on the piezoelectric pump structure for exploring suitable piezoelectric pump structure in the transmission of water. In order to optimize the pump parameters, how the propping manner,cushion chamber,distance between valve hole and valve border determines piezoelectric pump performance has was studied in detailed experimental testing. The various piezoelectric pumps with different structural parameters were manufatured. Their performance was tested. A variety of piezoelectric pump structure was produced, and a lot of experiments were carried out.6. ConclusionThe main conclusion of the paper was given and the future research directions were given.
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