actuator

[ ak-choo-ey-ter ]

/ ˈæk tʃuˌeɪ tər /

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noun

a person or thing that actuates.

a servomechanism that supplies and transmits a measured amount of energy for the operation of another mechanism or system.

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Origin of actuator

First recorded in 1860–65; actuate + -or²

Next is an actuator, basically something that changes the property of the material.
The Four Stages of Intelligent Matter That Will Bring Us Iron Man’s ‘Endgame’ Nanosuit|Shelly Fan|June 22, 2021|Singularity Hub
The problem, he adds, is that carefully examining “the dozens of different actuators that can influence the final results of fuel consumption and pollutant emissions” is a lengthy and complex process, made by more difficult by rigid timelines.
Product design gets an AI makeover|MIT Technology Review Insights|May 10, 2021|MIT Technology Review
Because of this complexity, it can take up to a year of extensive trial and error to define the system’s functional requirements, design the actuator mechanics, develop the necessary software, and validate the overall system.
Product design gets an AI makeover|MIT Technology Review Insights|May 10, 2021|MIT Technology Review
Up next for Project Kiwi is a new set of actuators that can dynamically apply torque plus added sensing capabilities for more stability and reaction to uneven ground or interactions.
Disney Imagineering’s Project Kiwi is a free-walking robot that will make you believe in Groot|Matthew Panzarino|April 23, 2021|TechCrunch

No actuators — the components that decide how to move a limb — that exist had the capabilities that the team needed, so they built them from scratch.
Disney Imagineering’s Project Kiwi is a free-walking robot that will make you believe in Groot|Matthew Panzarino|April 23, 2021|TechCrunch
Obviously, the actuator had smashed his transmitter, but left the receiver section intact.
Tight Squeeze|Dean Charles Ing
The tape moved on unperturbedly, reminding him to inspect the actuator bearings and extension rods.
Tight Squeeze|Dean Charles Ing
When I put enough voltage across its terminals, the actuator clicked down through the core.
The Trouble with Telstar|John Berryman
The "internal controller," the actuator of all spirits, according to the text: Who abiding in the soul, rules the soul within.
The Sarva-Darsana-Samgraha|Madhava Acharya
The valves are mounted side by side, as shown at E, so the double actuator member may be operated by a single set of cams.
Aviation Engines|Victor Wilfred Pag