24
?
!
CHECK IT OUT
Larger hydraulic systems are controlled
with special computers. A sophisticated
program evaluates signals coming from
the various sensors in the system and
activates valves and electric motors at the
right moments.
Pneumatics
and hydraulics
Pneumatic and hydraulic systems are
used in many different types of modern-
day machines. They are used when
power must be transferred from one
location to another. Both systems have
specific advantages and disadvantages
and are used depending on the
application.
PneuMatic
systeMs
Work with coMpressed air, generated b
y
coMpressors. Electrically controlled
valves direct the
coMpressed air
into
cylinders with pistons in theM. The p
istons
then perforM the desired MoveMents.
however, these systeMs cannot exert
excessive forces, since air can be
coMpressed. The advantage of
pneuMatics
is that very
high operating speeds
can be achieved and
coMpressed air
can be controlled very easily.
If very large forces have to be transmitted,
hydraulic systems are usually used. These
also work with cylinders, pistons, and valves,
like in the mega cyborg hand, but they
mostly use special hydraulic oils as a
medium, instead of water, because these oils
can be put under high pressures. Such
systems can be found in excavators, some
elevators, numerous commercial vehicles,
and in the braking systems in cars.
I have
hydraulic
systems on
board.
Hydraulics
Computer Control