PNEUMATIC SYSTEMS
 PNEUMATIC
 PNEUMATIC ACTUATORS
 MODELING OF P.A.
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What is Pneumatic?
 Pneumatics (a Greek word pneumatikos,
coming from the wind) is the use of
pressurized gas to do work in science and
technology.
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APPLICATIONS OF PNEUMATIC
 Pneumatic is used in many areas as medical,
automotive, electronic, food&packing
industries and etc.
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ACTUATORS
 Primary energy  Final (Mechanical) energy
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TYPES OF ACTUATORS
 Electrical (motors, solenoids,and
electromagnets)
 Hydraulic
}
 (Linearly & Rotary)
 Pneumatic
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Why Pneumatic Actuators ?
 Why pneumatic actuators are choosed?
 We use pneumatic when the key words are
Lighter, faster, simpler and clean.
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PNEUMATIC ACTUATORS
 A pneumatic actuator converts energy
(mostly in the form of compressed air) into
motion. The motion can be rotary or linear,
depending on the type of actuator.
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PNEUMATIC ACTUATORS
 ROTARY ACTUATORS (Motors)
 LINEAR ACTUATORS (Cylinders)
 Single Acting Actuators (air to spring)
 Double Acting Actuators (air to air)
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Rotary Actuator
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Rotary Actuator
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Lıneary Actuator
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Examples
 A type of butterfly
valve.
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Example
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Air to Spring Model
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Components of Pneumatic Actuation S.

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
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Compressed Air Generation System
Compressed Air Treatment Unit
The Valve
**The Actuator
The Piping
The Sensors and Transducers
The System Display
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Pneumatic Actuator (General Equation)
The principle is based on the concept of pressure
as force per unit area. So,
F=A(P1-P2)
Where F
=force(N)
A
=diaphragm area(m^2)
P1-P2=pressure differences(Pa)
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MODELING
Modeling of Pneumatic Servosystem
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Aim of Modeling
 Position
 Speed
 Force
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Pneumatic Servosystem
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The Continuity Equations
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Equilibrium Equation
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The Cylinder Model
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The Cylinder Model
 Continuity of air mass in the chambers.
 Dynamic translation equilibrium.
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Equations of Cylinder Model
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Block Diagram of the Linearized Model of
Pneumatic Servosystem
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Position Control of the P. Servosystem
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Block Diagram of the open and closed
loop Model of Pneumatic Servosystem
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