Piezoelectric pump performance test device

A test device and piezoelectric pump technology, which is applied in pump testing, liquid variable displacement machinery, machine/engine, etc., can solve the problems of nonlinearity and hysteresis of piezoelectric pumps

Inactive Publication Date: 2017-03-29
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the nonlinearity and hysteresis of the piezoelectric pump in the flow control of the prior art, and to provide a piezoelectric pump performance testing device

Method used

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  • Piezoelectric pump performance test device
  • Piezoelectric pump performance test device
  • Piezoelectric pump performance test device

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Experimental program
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Embodiment Construction

[0035] The present invention is described in detail below in conjunction with accompanying drawing:

[0036] Connect the upper computer and the lower computer with a USB cable, open the software in the upper computer, turn on the power switch, select the baud rate and COM port of the upper computer and turn on the measurement button of the upper computer, the lower computer collects and The four kinds of input and output data related to the characteristics of the piezoelectric pump are filtered and displayed on the LCD in real time and sent to the upper computer application program through the serial port to realize automatic acquisition and measurement. The upper computer converts the data received by the lower computer into a txt file The form is saved to the computer for later viewing and processing of the data, laying the foundation for the next step of establishing the electrical model of the piezoelectric pump.

[0037] The purpose of the present invention is to provide ...

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Abstract

The invention discloses a testing device for the performance of a piezoelectric pump and aims at solving the problems of nonlinearity and lagging of a current piezoelectric pump during flow control. The testing device is composed of an upper computer and a lower computer. The lower computer is composed of a power circuit, an STM32F103RBT6 single-chip microcomputer circuit, an LCD display circuit, a serial port communication circuit, a water pressure collecting circuit, a strain bridge flow collecting circuit and a piezoelectric pump voltage signal collecting circuit. A fifth pin of a chip U7 of the serial port communication circuit of the lower computer is connected with a USB D+ port of a USB interface of the upper computer, and a sixth pin of the chip U7 is electrically connected with a USB D- port of the USB interface of the upper computer. A fifth pin of a chip U2 of the power circuit is electrically connected with the STM32F103RBT6 single-chip microcomputer circuit. The LCD display circuit, the serial port communication circuit, the water pressure collecting circuit, the strain bridge flow collecting circuit and the piezoelectric pump voltage signal collecting circuit are electrically connected with the STM32F103RBT6 single-chip microcomputer circuit in sequence.

Description

technical field [0001] The invention relates to a performance testing device belonging to the field of piezoelectricity, more precisely, the invention relates to a performance testing device of a piezoelectric pump. Background technique [0002] As the core driving source of the micro-flow system, the piezoelectric pump plays a key role in energy conversion and has a wide range of applications. There are application spaces for piezoelectric pumps in all frontier fields. With the continuous deepening of piezoelectric pump research and the rapid development of piezoelectric materials, the research and application of piezoelectric pumps have also received more and more attention, and the performance of piezoelectric pumps has also been rapidly improved. However, if we want to achieve more precise flow control based on this tiny piezoelectric pump, we need to do more in-depth research on the electrical model of the piezoelectric pump. The traditional BVD model of the piezoelec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B51/00
Inventor 李新波孙海欣刘庆财姜良旭石要武吴越刘国君杨志刚
Owner JILIN UNIV
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