In closed loop control system, the difference between the input and the feedback signal is represented by_____

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PGCIL NER DT (Electrical) 27 Feb 2022 Official Paper

Answer 1

Types of control system

1.) Open loop system

F3 Savita Engineering 26-4-22 D3

In this system, the control action is independent of the desired output signal.
The feedback element is absent.
The sensitivity of the open loop system is very high.
It is very simple, needs low maintenance, quick operation, and is cost-effective.
The accuracy of this system is fast and less dependable.

2.) Closed loop system

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In this system, the control action is dependent on the desired output signal.
The feedback element is present.
The difference between the input and the feedback signal is represented by error signal e(t).
The sensitivity of the closed-loop system is less.
It is complex, needs maintenance, and is costly.
The output of this system is slow and accurate.