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actuator
This term describes the physical bridge between a control system and a mechanical action. It carries a technical, engineering connotation, implying a precise conversion of energy—such as electrical, hydraulic, or pneumatic pressure—into a specific physical displacement or rotation.
In industrial and robotic contexts, it is distinguished from a sensor; while a sensor perceives the environment, the actuator is the component that actively changes it. It is used almost exclusively in technical documentation, manuals, and scientific discourse.
Meanings
Examples
This is an actuator.
We must optimize the actuator efficiency.
Early industrial actuators relied on steam power.
Piezoelectric actuators allow for nanometer precision.