Element in Pneumatic Working System Introduction To Actuator.pdf

Element in Pneumatic Working System Introduction To Actuator

1. ELEMENT IN PNEUMATIC WORKING SYSTEM
Introduction to Actuator

2. WHAT is ACTUATOR ?
Theoutputsignaliscontrolledbythecontrolledsystem,andthe
actuatorrespondstothecontrolsignalsviathecontrolelement.
Actuator is
output devicesfor the
conversionof supply energy into
usefullwork

3. TYPES of ACTUATOR
Actuator
Linear
cylinder
Special
cylinder
Rotary
actuator
Special
actuator

4. FUNCTION of ACTUATOR
Pneumatic actuator
transform
energy
(produced by air pressure)
into forms of work in
force
or
rotation

5. FUNCTION of ACTUATOR
Force produced depends on cylinder
DIAMETER
AIR PRESSURE
The actuator movement can be classified into
LINEAR
ANGULAR

6. SAMPLE OF ACTUATOR

7. ADVANTAGES
Explosion
and fire
safety
Simplicityof
realization
relatively to
small back
and forth
motion
Low
cost
Tolerance
to
overload,
up to a full
stop Ecological
purity
High
reliability
of work
High
speed of
movingSophisticated
transfer
mechanism
are not require
Easeat
reversion
movement
Abilityto
accumulation
and
transportation

8. DISVANTAGES
Air is not stable to
compress rather than
hydraulic oil
Impossibility
to receive uniform
and constant speed of
the working bodies
movement
Difficulties
in performance
at slow speed
Limited conditions
–use of compressed
air is beneficial up to
the definite values
of pressure
Compressed air
requires good
preparation