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Definitions

Fluid power

Energy transmitted and controlled through the use of pressurized fluid, either liquid, (hydraulics) or gas (pneumatics), in a circuit.

Hydraulic

Pronunciation: (hī-drô'lik, -drol'ik) – a system in which energy is transmitted, controlled and distributed using a liquid (water or oil). The liquid (water or oil) is pushed through
a small pipe or hole, creating pressure which can be transformed into motion – force
is applied at one point and then transmitted to another point by use of an
incompressible fluid.

Hydraulic systems are found in machines everywhere: controls for airplanes, elevators, automobiles, construction and agriculture equipment, medical devices, to just name a few.

Pneumatics

Pronunciation: (noo-mat'ik, nyoo-) – system in which energy is transmitted, controlled and distributed using air under pressure in a circuit.

Motion control

Control of the force, position, velocity and/or acceleration of a vehicle, machine or system using some type of device such as a hydraulic pump, linear actuator, or an electric motor.