Control System - manages, commands, directs or regulates the behavior of other
devices or systems using control loops.
Elements of a Control System
Plant - the process you want to control, i.e., drive to the desired state.
Sensor - Eye of the control.
– Enables the control to see what is going on.
– Reports on the state of the process
Actuator
– Moves the process from current state to the desired state.
– If the sensor is the eye, then the actuator is the muscle.
Controller – Takes the sensor information and decides how to actuate the
plant to achieve the desired state.