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작성자베타 조회 152회 작성일 2020-07-16 11:36:17 댓글 0


What is an Actuator?

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In this video, we’re going to:

– Explain the purpose of an actuator.
– Discuss the 2 types of actuators.
– Look at the 3 typical sources of energy required for an actuator to move something.
– Observe the operation of an actuator used in a very common industrial control application.

In very simple terms, an actuator is a device that makes something move or operates.

Every one of us takes advantage of at least one actuator every day.

When we go to the grocery store, the door opens automatically for us. An actuator makes the door open.

We can move the car seat forward or backward before we drive away in our car. An actuator makes the seat move.

An actuator can move something in a straight line, also referred to as linear.

Also, an actuator can make something move in a circular motion, also referred to as rotary.

An actuator receives a source of energy and uses it to move something. To put it another way, the actuator converts a source of energy into a physical-mechanical motion.

The butterfly valve is operated by turning the Handwheel connected to the rotary actuator. In industrial applications, the Handwheel could be replaced by one of three typical sources of energy, which can operate the rotary actuator:
– Electric actuators use some form of electric energy to operate.
– Hydraulic actuators use a variety of liquids as a source of energy.
– Pneumatic actuators are operated by compressed air.

Let’s look at a typical Pneumatic Actuator in action! The PLC analog output card produces a 4-20 mA current to move the valve from fully open to fully closed.

The 4-20 mA current will be converted to pneumatic pressure which becomes the source of energy to operate the actuator.

An actuator receives a source of energy and uses it to move something. In other words, the actuator converts the source of energy into physical-mechanical motion.

That source of energy can be in 3 different forms:
– Pneumatic
– Electric
– Hydraulic

Typical actuators in the industry include:
– Pneumatic Control Valve
– Electric Motor
– Hydraulic Motor


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#RealPars #Actuator #Automation
Feroz Khan : Thanks your, for sharing this basic knowledge.
Purushothaman M : Super
charliechimples : Great vid once again, thanks for sharing.




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