Introduction to control system and the concept of feedback was introduced in Chapter 1. In this chapter we are, once again, discussing the same topic in some more details.
A control system is formed by interconnecting various components to give a desired system response. An open-loop or non-feedback system (Fig. 5.1), with the help of a controller or actuating device, directly generates the output in response to an input.
Fig. 5.1 Open-loop or non-feedback system
A closed-loop or feedback system (Fig. 5.2) generates the output in response to ...