Unit 3 Flashcards
(20 cards)
Flow chart
A graphic organizer that can be used to show the procedural pathways within a program.
Control Systems
designed to provide consistent process control and reliability
Open Loop
no feedback used in processes
Closed Loop
feedback used in the programming
Digitals
Signals have 2 states
Alalog
Data represented continuously with variable quantities
Pneumatics
The use of gas flowing under pressure to transmit power from one location to another.
Hydraulics
The use of a liquid flowing under pressure to transmit power from one location to another.
Reserivoir
storage device which holds the fluid
Pump or Compressor
Device used to move fluids
Valves
Regulate the direction of fluid flow
Properties of compressed air
availability, easily stored, simplicity, low system cost
Fluid output system
Transmit force over great distance, multiply and input force, increase the distance an output will move
Properties of gasses
-Gases have no definite volume
-Gases are highly compressible
-Gases are lighter than liquids
Gauge pressure
the difference between the actual pressure and the atmospheric pressure
Absolute Pressure
atmospheric pressure plus gauge pressure
Boyles Law
The volume of a gas at constant temperature varies inversely with the pressure exerted on it.
Charles law
Volume of increases or decreases as the temperature increases or decreases, provided the amount of gas and pressure remain constant
Guy-Lussac’s Law
Absolute pressure of a gas increases or decreases as the tempature increases or decreases, provided the amount of gas and the volume remain constant
Pascals Law
Pressure exerted by a confined fluid acts undiminished equally in all directions
