What is a Piezoelectric actuator?

A piezoelectric actuator is a device that uses the piezoelectric effect to convert electrical energy into mechanical energy. When an electric voltage is applied to piezoelectric materials, their shape changes. This property allows for precise and tiny movements, making them ideal for applications requiring high accuracy.

Working Principle:
Piezoelectric actuators utilize piezoelectric materials (e.g., PZT, BaTiO₃) that change shape when an electric field is applied. The piezoelectric effect occurs when mechanical stress is applied, producing an electric charge, and conversely, when an electric field is applied, the material deforms. This allows for high-precision control of minute movements.

Features:
・High precision: Capable of tiny movements and precise positioning.
・Fast response: Quick switching and response times.
・Compact size: Small and lightweight, ideal for compact devices.
・Durability: Long lifespan with minimal wear and maintenance.

Application of Piezoelectric actuator

１．Precision positioning: Used in optical devices (microscopes, cameras) and semiconductor manufacturing equipment for high-precision positioning.
２．Ultrasonic speakers: Used to generate ultrasound in devices such as medical ultrasound probes and acoustic devices.
３．Automotive and aerospace control: Used in collision avoidance systems and flap adjustments for quick and precise movements.
４．Vibration control systems: Used in vibration dampers and noise control devices for fine vibration adjustments.

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