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Which of the following statement is not correct about closed-loop control system?

Which of the following statement is not correct about closed-loop control system? Correct Answer Its design is simple and it is easy to manufacture

Concept:

Open-loop control system:

An open-loop control system in which the control action is independent of the output.

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Closed-loop control system:

An open-loop system is converted into a closed-loop system using negative feedback, the feedback path has unity gain. 

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Comparison between open-loop and closed-loop control systems:

 

Open-loop system

Closed-loop system

Construction

Simple

Complex

Reliability

Non-reliable

Reliable

Accuracy

Depends on calibration

Accurate because of feedback

Stability

Stable

Less stable
Bandwidth Less High

Response

Fast

Slow

Effect of parameter variation and noise

More

Reduced

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