Electro-hydraulic actuators combine hydraulic power with electronic control to automate valve positioning in high-force applications. These systems integrate a self-contained hydraulic power unit, including a pump, reservoir, control valves, and pressure regulation, with an electrically driven interface for closed-loop control.
Design options include pilot-operated servo valves or proportional solenoids to meet specific torque and speed requirements. Actuators can be configured as compact modular units or linked to centralized power packs, depending on installation constraints and system layout.
Feedback devices such as LVDTs or encoders enable accurate positioning and minimize hysteresis, while onboard or remote-control electronics support integration with PLCs or DCS platforms. Material and seal selection can be customized for compatibility with different hydraulic fluids and environmental conditions.
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