Piezoelectric ceramics are special materials with piezoelectric effect. Piezoelectric ceramics can be mechanically deformed when an electric field is applied; conversely, when a mechanical force is applied, it can also generate an electric charge. This bidirectional conversion characteristic makes piezoelectric ceramics widely used in many fields. Among them, high-power piezoelectric ceramic drive technology is particularly eye-catching. High-power piezoelectric ceramic drive technology is a method to use the characteristics of piezoelectric ceramics to achieve high power output. This driving technology mainly includes two parts: the driving power supply of piezoelectric ceramics and the driving control circuit.
In high power applications, it is necessary to ensure that the power supply can provide sufficient current and stable voltage output. Secondly, the drive control circuit plays a role in controlling and regulating the piezoelectric ceramic drive. This circuit converts the input electrical energy into the electrical signal required by the piezoelectric ceramic. By changing parameters such as frequency, amplitude and phase of electrical signals, precise driving of piezoelectric ceramics can be achieved. As a power amplifier with balanced voltage and power indicators that can amplify AC and DC signals, ATA-4052 high-voltage power amplifier can do more for high-power piezoelectric ceramic drive tests.
This time, Aigtek sorted out the past customer cases, and selected the cases about the application of ATA-4052 high-voltage power amplifier in ultrasonic motor drive to share with you. The experiment used signal generators, voltage/current probes, computers, ATA-4052 high-voltage power amplifiers, digital oscilloscopes, laser vibrometers, fixtures and piezoelectric ceramic sample testing equipment.
An overview of the experiment content:
During the test, the computer control software issues instructions, and the signal generator triggers an initial sinusoidal signal after receiving the instructions, which is amplified by a high-voltage amplifier and applied to the sample to be tested, causing the sample to vibrate. During the vibration of the sample, the laser Doppler vibration velocimeter monitors its vibration speed, and the probe collects the voltage across the sample or the current passing through the sample. The test results of the two are fed back to the computer terminal after being collected by the oscilloscope, and finally processed by the self-developed software. Finally, we can see the variation of the mechanical energy density of the mechanical factor and the variation of the mechanical factor with the vibration velocity.
The ATA-4052 high-voltage power amplifier used in the experiment is an ideal single-channel high-voltage power amplifier that can amplify AC and DC signals. The maximum output voltage is 310Vp-p (±155Vp) and the power is 437.1Wp, which can drive high-voltage power loads. The voltage gain is adjustable by numerical control, and the commonly used settings can be saved with one key, which provides you with convenient and simple operation options. It can be used with mainstream signal generators to achieve signal amplification.
ATA-4052 High Voltage Power Amplifier Features
1. The original digital control gain system can flexibly adjust the voltage
2. The input and output resistance can be switched between two levels, and the input and output resistance can be switched between two levels, which can better match more capacitive, inductive and resistive loads, and has a wide range of tests;
3. LCD screen, the image is clearer, graphically displayed, and the interface is clear at a glance;
4. The impedance adjustment option can be customized, and the fine impedance adjustment option can be customized in 1Ω steps to ensure that the matching of the client signal is not distorted;
5. High index redundancy, the product design has about 20% index redundancy, which can effectively prevent the occurrence of instrument overload and ensure safe use;
ATA-4052 High Voltage Power Amplifier
Bandwidth: (-3dB) DC~500kHz
Voltage: 310Vp-p (±155Vp)
Current: 2.82Ap
Power: 437.1Wp
Slew rate: 345V/μs
Output: bipolar output
ATA-4052 High Voltage Power Amplifier Amplitude-Frequency Characteristic Diagram
ATA-4052 Voltage Amplifier Load Curve
To sum up, high-power piezoelectric ceramic drive technology achieves high power output by making full use of the characteristics of piezoelectric ceramics. It has broad application prospects in the fields of ultrasonic cleaning and welding, acoustic wave sensors, vibration energy harvesting, and intelligent structure control. We believe that our ATA-4052 high-voltage power amplifier can also help achieve breakthroughs in more testing fields in the future, and high-power piezoelectric ceramic drive technology will also usher in a broader development space.
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