actuator

Meaning

1. 1nouncountablecomputing

   A device that converts energy into movement to open, close, push, or control part of a machine.

   Grammar: Countable; takes a plural: several actuators. Common in engineering and robotics.

   Patterns

   • electric actuator
   • hydraulic actuator
   • control an actuator

   A small actuator opens the valve when the sensor signals heat.

   The robot replaced a broken actuator in its lifting arm.

   Engineers tested each actuator before installing the door mechanism.

Word forms

Common combinations

electric actuator

An electric actuator moved the antenna into position.

hydraulic actuator

The hydraulic actuator lifted the platform smoothly.

faulty actuator

A faulty actuator caused the flap to stick.

Synonyms and how they differ

motor

A motor supplies rotary power broadly; an actuator is the part that produces controlled movement for a system.

drive

A drive is the mechanism or unit that moves something; actuator often names the final motion-producing component.

Word family

actuate verb

To cause a machine or device to operate.

Practice

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