Application Cases

Piezoelectricity has been proposed as a solution for low-power, fast-switching, and high-force microactuators, as well as an alternative to actuators based on thermal, magnetic, and electrostatic principles. Piezoelectric actuators utilize the converse piezoelectric effect, converting micro-deformations into macroscopic output forces through electromechanical coupling to generate actuation performance. They are characterized by their compact size, simple structure, fast response, high positioning accuracy, and strong resistance to electromagnetic interference. As a result, they are widely used for driving and regulating in advanced micro-mechanical systems.

The ATA-2021B high-voltage amplifier from Aigtek is based on an AB class amplifier circuit, featuring low distortion and high stability. It has a maximum bandwidth of up to 1 MHz and a maximum output voltage of up to 200 Vpp, making it widely applicable for testing and performance evaluation of various piezoelectric components.

Experiment Name: Radial Force Analysis of Interdigital Spiral Electrode Piezoelectric Actuators

Experiment Principle:Piezoelectric actuators convert electrical energy into mechanical energy using the converse piezoelectric effect. When an external electric field is applied, the piezoelectric material inside the actuator undergoes deformation. This occurs because the electric field causes the charges within the piezoelectric material to move, resulting in changes in the material’s size or shape. This drives the piezoelectric actuator to move.

Experiment Block Diagram:

Experiment Photographs:

Experiment Process:A function generator produces electrical signal waveforms. The signal voltage is amplified by the ATA-2021B high-voltage amplifier and then applied to the piezoelectric actuator. The actuator is mounted along the radial axis perpendicular to a transparent acrylic plate and connected to a damping block. The damping block is placed in the testing area of a digital force gauge. The combination of the test head and damping block is used to preload the piezoelectric sample. Data collected by the digital force gauge are processed by a computer.

Application Direction:Piezoelectric Actuators

Application Scenarios:Piezoelectric actuators, piezoelectric motors, ultrasonic motors

Product Recommendation:ATA-2021B High-Voltage Amplifier

Figure: ATA-2021B High-Voltage Amplifier Specifications