What is an Electro-Hydraulic Actuator? #valincorporation #automation #actuator #hydraulic

• Hydraulic Actuation o • System Components for Hydraulics o Which components aren’t needed for an electro-hydraulic system? - Hydraulic Power Units (HPUs), hoses, and fittings - Valving, accumulators, and regulators • Electro-Hydraulic actuator designs o Servo motor with a closed system containing the liquid controlled by a pump o Still includes a reservoir to hold liquid that is used to move the actuator • How do we maintain fluid in an Electro-Hydraulic actuator? o No maintenance required o No vents so can be used in any orientation o Sealed so never exposed to air, therefore never oxidizes o Since not being constantly circulated, don’t get the shear damage that is typical • Feedbacks and dual-loop feedback architectures o Encoder feedback from the servo motor doesn’t correlate to precision actuator motion o Feedback from the actuator allows for more precis