Also found in: Thesaurus, Medical, Legal, Acronyms, Encyclopedia, Wikipedia.


One that activates, especially a device responsible for actuating a mechanical device, such as one connected to a computer by a sensor link.


(ˈæk tʃuˌeɪ tər)

1. a person or thing that actuates.
2. a servomechanism that supplies and transmits a measured amount of energy for the operation of another mechanism or system.


A mechanism that furnishes the force required to displace a control surface or other control element.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.actuator - a mechanism that puts something into automatic action
mechanism - device consisting of a piece of machinery; has moving parts that perform some function
positioner, rotary actuator - (computer science) the actuator that moves a read/write head to the proper data track
References in periodicals archive ?
ATI, a Texas, USA-based integrated manufacturer of valve automation solutions, has begun the task of replacing 42 existing linear valve actuators with its newest model at an open-pit copper mining operation in Arizona.
The latest innovation within the companys broad actuator portfolio, the Alfa Laval Unique DV-ST UltraPure Actuator fits the complete range of Alfa Laval Unique DV-ST UltraPure diaphragm valves.
This 24 VDC powered actuator is built with a brushless DC motor.
Each actuator has two wires, one that connects to an external power source and the other that communicates with the control source.
The development of this new actuator has been based on decades of experience in the area of motorized actuators.
This excessive heat can prematurely degrade the seals in the actuator as well as the hydraulic fluid in the case of hydraulic systems.
Valve-gate actuators began as simple pistons connected to a valve pin, allowing molders to open and close the hot-runner gates at a time of their choosing.
The gas company's objective was to provide an efficient and reliable process control actuator which could be retrofitted on installed valves to reduce costs and downtime.
Product segmentation and analysis of the actuator market
The safety function of AUMA's SIL actuators can be configured with different seating criteria, including forced limit or torque seating to protect the mechanical integrity of the valve.
Here is shown a simulation model of two-way bellow actuator created by authors in Matlab's Simulink environment (Fig.
On investigation, the right main landing gear actuator was found cracked.