Application Cases

The stable operation of a ship's propulsion system is crucial for safe navigation, and lubrication failure is one of the main causes of engine malfunctions. In recent years, claims for main engine failures due to lubrication failure have accounted for 50.4% of all accident causes. During the operation of mechanical equipment, wear is inevitable, and the wear particles generated will enter the lubricating oil, leading to equipment failure. The size of wear particles produced by mechanical equipment varies at different stages of wear. When the ship's propulsion system is in an abnormal wear stage, the particle size of the wear particles will exceed 20μm. Therefore, detecting the size of wear particles in lubricating oil can monitor the operating condition of the ship's propulsion system.

Regarding experimental research on microparticle separation technology based on bulk acoustic waves (BAW), the ATA-1000 series of power amplifiers from Antai Electronics has been widely applied in this field. The ATA-1000 series can output an alternating voltage of up to 70Vpp, meeting the voltage requirements of most microparticle separation technologies available on the market.

Experiment Name: Microparticle Separation Technology Experiment

Experiment Principle: The signal generator is responsible for producing and outputting voltage and frequency signals, while the power amplifier amplifies the output voltage from the signal generator and applies it to the piezoelectric transducer. An oscilloscope is connected to the output end of the power amplifier to monitor the output voltage and frequency signals, allowing for adjustments as needed for the experiment. A desktop pressure source provides power for the pressure-driven pump. By controlling a specific program on a computer, the pressure released by the pressure-driven pump can be adjusted, thereby controlling the flow rate of the experimental sample liquid and pure solution within the microchannel.

Experiment Block Diagram:

Experiment Photographs:

Experiment Process: Bond the piezoelectric transducer to the glass chip, secure the chip in position, and adjust the microscope focus until the channel can be clearly observed. After injecting the solution and adjusting the flow rate to a stable level, the signal generator inputs the signal and voltage. The power amplifier then amplifies the voltage to drive the piezoelectric transducer to start working, causing the wear particles in the channel to deflect. The frequency of the signal generator can adjust the focusing position of the wear particles, and the output voltage can influence the magnitude of the acoustic radiation force experienced by the wear particles. By adjusting the frequency, voltage, and the driving pressure of the air pump, the system can be matched, and the separation of wear particles can be observed at the channel exit bifurcation.

Application Directions: Acoustic waves; wear particle separation; microfluidic chips; iron wear particles

Product Recommendation: ATA-1000 Series Broadband Amplifiers

Figure: Specifications of the ATA-1000 Series Broadband Amplifiers