Application of Power Amplifier in Experiment of Piezoelectric Stack Pump

The piezoelectric actuator is a device that uses the mechanical drive generated by the inverse piezoelectric effect of the piezoelectric material. The actuator uses the deformation of the piezoelectric material to make the mechanical drive. Since the

The piezoelectric actuator is a device that uses the mechanical drive generated by the inverse piezoelectric effect of the piezoelectric material. The actuator uses the deformation of the piezoelectric material to make the mechanical drive. Since the deformation of the piezoelectric material is extremely small, the small deformation is directly used for The precision of motion driving can reach the nanometer level, and its application is very wide. It can be used in many aspects such as precision machinery, optics, biomedicine, etc. It generally includes piezoelectric precision actuators, piezoelectric motion mechanisms, fluid drive and control mechanisms, ultrasonic motors, Piezoelectric shock absorption and noise reduction technology.

Piezoelectric stack pump experiment: connect the pump, hydraulic cylinder, reversing valve, etc. to form a linear drive system, and test the output force characteristics and expansion speed of the linear drive. The following is the construction process of the voltage flow test experimental platform:

Use a signal generator to generate a sinusoidal signal, output the signal to the power amplifier, and then load the amplified signal to the stack, and use an oscilloscope to observe the amplitude and frequency of the signal loaded on the stack in real time to avoid damage to the piezoelectric stack , The stack is not allowed to load negative voltage less than -20V, or higher than positive voltage greater than 150V.

The load voltage range is 30V-150Vpp, and the measurement is performed every 30V. Here is the ATA-4052 high voltage power amplifier. The higher the load voltage, the greater the elongation of the piezoelectric stack, which drives the deformation of the cavity. The larger the value, the more obvious the law of flow and voltage, the higher the input voltage, the larger the pump output flow.

ATA-4052 is an ideal single-channel high-voltage power amplifier that can amplify AC and DC signals. The maximum output is 310Vp-p (±155Vp) voltage and 437Wp power, which can drive high-voltage power loads. The voltage gain is digitally adjustable, and common settings can be saved with one key. It can be used with mainstream signal generators to achieve perfect signal amplification.

The input is a BNC interface, and the input resistance is 50Ω and 5kΩ optional, which perfectly matches the high and low internal resistance signal sources. The output is a banana socket, the maximum output voltage is 310Vp-p (±155Vp), and the output current is 2Arms. The operation panel LCD display, the equipment status and parameter dynamic display, the interactive interface is clear at a glance, simple and easy to understand. The voltage gain can be adjusted from 0 to 100 times by digital control, which can be divided into two types: coarse adjustment (1step) and fine adjustment (0.1 step). Combined with the display of the gain of the LCD panel, it can be quickly adjusted to the required voltage value.

The experimental materials of this article are organized and released by Xi'an Antai Electronics. If you want to know more experimental programs, please continue to pay attention to the official website of Antai www.aigtek.com. Aigtek is a domestic high-tech enterprise specializing in the research and development, production and sales of measuring instruments. It has been focusing on the research and development and manufacturing of power amplifiers, wiring harness testers, measurement calibration sources and other test instrument products.