Theory Flashcards
Define Systems
Segments of the environment which are to be controlled
Define “Sensor”
Measures the external signal
Define “Actuator”
Alters and adjusts the system
Define “Controllers”
Interconnection of components which form the system that provides the desired outcome.
Define “Process”
a component
Define and draw Open Loop System
Uses a controller and actuator to obtain the desired response.
Define and draw basic Closed Loop System
Uses a feedback singal from a sensor to control the system
Define “Abstraction”
Modelling
Define “Model”
Mathematical abstraction of the system
Define “Control system”
Consists of subsystems and processes assembled for the purpose of obtaining a desired output with the desired performance.
List the 4 categories of control systems
Power amplification
Remote control
Conveience of input form (convert th e input type into a different type of output)
Compensation for disturbances
Define “Input”
The stimulus provided to the system
Define “Output”
The actual response of the system
Define “Disturbance” and list some examples on ship
Unwanted external loads that act upon the system.
Roll, pitch, yaw
Temperature
Wind
Sea State
Draw an open control loop with disturbances
Slide 18
