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Electro-Pneumatic Actuators: Principles, Applications, and Advantages
Release date：2025/6/30
Introduction
Electro - pneumatic actuators are hybrid devices that combine electrical control with pneumatic actuation to achieve precise and efficient motion control. These actuators are widely used in industrial automation, process control, and robotics due to their reliability, fast response, and adaptability to various operating conditions.
Electro - Pneumatic Actuators Working Principle
An electro - pneumatic actuator consists of three main components:
Electrical Control Unit – Typically a solenoid valve or a digital positioner that receives electrical signals (e.g., 4 - 20 mA, 0 - 10 V, or digital commands) to regulate airflow.
Pneumatic Actuator – Converts compressed air into mechanical motion, either linear (piston - type) or rotary (rack - and - pinion or vane - type).
Feedback Mechanism – Many modern electro - pneumatic actuators incorporate position sensors (e.g., potentiometers or encoders) for closed - loop control, ensuring high precision.