Application Cases

With the rapid development of scientific theories and engineering technologies, various electronic products, instruments, and mechanical devices are increasingly moving towards miniaturization, high density, and high precision. Fluid control and delivery technologies are required in many fields of society. Unlike traditional electromagnetic-driven piston, impeller, and screw pumps, micro pumps are small in size and have no moving parts, making them more suitable for applications in the miniaturization and high precision of electronic products and instruments. Piezoelectric-driven micro pumps (referred to as piezoelectric pumps) use piezoelectric vibrators as driving components. Due to the fast response speed to voltage, high output precision, low energy consumption, ease of miniaturization, and ability to avoid electromagnetic interference, piezoelectric pumps are widely used.

The ATA-3000 series power amplifiers from Aigtek are widely used in the field of piezoelectric material driving. These power amplifiers can output a maximum voltage of 160 Vpp and a current of 20 A, meeting the driving requirements of most piezoelectric ceramics.

Experiment Name: Design and Experimental Study of Synthetic Jet Piezoelectric Pumps

Experiment Principle:

In synthetic jet piezoelectric pumps, piezoelectric materials are used as driving elements. When an electric field is applied to the piezoelectric material, it deforms, thereby changing the pressure distribution inside the pump chamber. The deformation of the piezoelectric material causes periodic changes in the pressure within the pump chamber, creating positive and negative pressure differences. During the negative pressure phase, gas from the surrounding environment is drawn into the pump chamber; during the positive pressure phase, the gas inside the pump chamber is expelled. Through specific structural design and driving methods, a series of counter-rotating vortex pairs are generated inside the pump chamber. These vortex pairs carry the surrounding gas out through the jet orifice, forming a synthetic jet.

Experimental Block Diagram:

Experimental Process:

A signal generator produces voltage signals with specific frequencies and waveforms, which are amplified by the ATA-3040 power amplifier and applied to the piezoelectric vibrator. A gas flow meter (with a measurement range of 20 mL/min to 2 L/min and a measurement accuracy of ±3%) is used to measure the gas flow. By controlling the computer to change the waveform, frequency, and voltage amplitude of the excitation signal, the relationships between waveform and flow, frequency and flow, and voltage amplitude and flow are obtained.

Application Directions:

• Aerospace

• Precision Machining

• Optical Engineering

• Bioengineering

• Semiconductor Manufacturing

Application Scenarios:

• Biomedical applications

• Fuel supply

• Liquid cooling and chemistry

• Precision actuation

• Electronic product cooling

Product Recommendation:

Figure: Performance Parameters of the ATA-3000 Series Power Amplifiers

This material is compiled and released by Aigtek. For more case studies and product details, please continue to follow us. Aigtek, based in Xi’an, has become a widely recognized supplier of instruments and equipment with a broad product line and considerable scale. We offer free trials of demo units. For more information on power amplifiers and other products, please visit our official website at www.aigtek.cn or call 029-88865020.