Actuators are devices used to produce action or motion. Input(mainly electrical signal , air, fluids) Electrical signal can be low power or high power. Actuators output can be position or rate i.e. linear displacement or velocity. Actuation can be from few microns to few meters types. Hydraulic Actuators Pneumatic actuators Mechanical Actuators Electrical Actuators Linear actuator: solenoid, Hydraulic/Pneumatic. Rotary actuator: motor, Hydraulic/Pneumatic.

1. GANDHINAGAR INSTITUTE OF
TECHNOLOGY
ACTIVE LEARNING ASSIGNMENT
OIL HYDRAULICS & PNEUMATICS
(2171912)
TOPIC :- ACTUATORS
PREPARED BY,
HITARTH SHAH,
150120119171,
7C1
GUIDED BY,
PROF.JATIN PATEL

2. WHAT IS AN ACTUATOR?
• Actuators are devices used to produce action or motion.
• Input(mainly electrical signal , air, fluids)
• Electrical signal can be low power or high power.
• Actuators output can be position or rate i.e. linear displacement
or velocity.
• Actuation can be from few microns to few meters

3. FLOW DIAGRAM OF AN ACTUATOR

4. TYPES OF ACTUATORS
 Hydraulic Actuators
 Pneumatic actuators
 Mechanical Actuators
 Electrical Actuators
Linear actuator: solenoid, Hydraulic/Pneumatic.
Rotary actuator: motor, Hydraulic/Pneumatic.

5. HYDRAULIC ACTUATOR
• Hydraulic systems are used to control & transmit power.
• A pump driven by prime mover (electric motor) creates flow of fluid
 TYPES OF HYDRAULIC ACTUATORS:
 Linear actuator (hydraulic cylinder)-
 Provides motion in straight line.
 Linear displacement depends on stroke length.
 Usually referred to as cylinders, rams (single acting cylinders) or jacks.
Rotary actuators (Hydraulic motors)-
 Produces continuous rotational motion.
 Pump shaft is rotated to generate flow.
 A motor shaft is caused to rotate by fluid being forced into the driving chambers.

6.  Semi rotary actuators-
 Produces non-continuous rotational motion.
 Limited to less than one revolution (<360°).
 Used to produce oscillatory motions in mechanisms.
 APPLICATIONS:
 Hydraulic jack.
 Hydraulic brake.
 Hydraulic ram.
 Used as sensor.
 Close loop velocity controlling.
 Highly precise positioning for heavy loads.

7. PNEUMATIC ACTUATOR
 It convert energy formed by compressed air at high pressure into ether
linear or rotary motion.
 Quickly respond in operation.
CONSTRUCTIONAL FEATURES OF CYLINDER

8. ROTARTY HYDRAULIC ACTUATORS
 VANE ROTARY ACTUATORS:
• Limited angle in both directions
• Maximum angle always smaller than 360
• The same torque in both directions.
 PISTON ROTARYACTUATORS:
• With rack and gear coupling.
• Here maximum angle may be larger than
360°

9. MECHANICALACTUATOR
• Mechanical linear actuators typically
operate by conversion of rotary motion
into linear motion.
 TYPES OF MECHANICS:
 Screw
 Wheel and axle
 Cam

10. OTHER TYPES OF ACTUATORS
Heaters - used with temperature sensors And temperature controller to
control the temperature in automated moulding Equipment and in
soldering operation.
Lights - Lights are used on almost all machines to indicate the machine
state and provide feedback to the operator.
LED
LCD’s
Gas plasma display
CRT
Sirens/Horns - Sirens or horns can be useful for unattended or dangerous
machines to make conditions well known.