1. Overview : 1.2 Open Loop and Closed Loop Implementation Models : 1.2.1 Closed Loop Systems : Control Theory Control Theory
The closed loop control system is a system where the actual behavior of the system is sensed and then fed back to the controller and mixed with the reference or desired state of the system to adjust the system to its desired state. The objective of the control system is to calculate solutions for the proper corrective action to the system so that it can hold the set point (reference) and not oscillate around it.
Figure 1. Closed Loop Control System