PSY/CS330 Human Factors
04/30/2001
Day 1-
32
A Model of Control Systems Theory
Reference Input
:
Thermostat =
72
o
Comparator
:
72-65 = -7
Action System:
Furnace is turned on
Output
:
Hot air is blown
out of vents
Input
:
Air temperature
65
o
Sensor
:
Thermometer at wall
Disturbance
:
e.g. open window
