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04/18/23
A Model of Control Systems Theory
Reference Input:Ideal value or goal state
Comparator:Actual - Reference
Action System
Output:Results of the Systems actions
Input:Values related togoal state
Sensor:Detect Input
Disturbance:Influences from outside the system
04/18/23
CST and the Themostat
Reference Input:Thermostat =72o
Comparator:72-65 = -7
Action System:Furnace is turned on
Output:Hot air is blownout of vents
Input:Air temperature65o
Sensor:Thermometer at wall
Disturbance:e.g. open window
04/18/23
CST and the Thermostat
Reference Input:Thermostat =72o
Comparator:72-73 = 1
Action System:Furnace is turned off
Output:No hot air
Input:Air temperature73o
Sensor:Thermometer at wall
Disturbance:e.g. open window
04/18/23
CST and Eating
Reference Input:Reference Caloriesand Fat signal forWeight = 150
Comparator:Structures inHypothalamus
Action System:Controls MetabolismRate of Burning Fat
Output:Signal aboutfuel level and State of Fat Cellswhich stimulate hunger
Input:Calories Per daySignals from StomachSignals from Fat
Sensors:Brain, stomach others
Disturbance:vomiting (Decreasesinput)Exercise (IncreaseMetabolism