Disadvantage of automatic control system - Manufacturing Processes - 1

Q.  What is a disadvantage of automatic control system?
- Published on 03 Aug 15

a. It reduces effects of non-linearities
b. It reduces effects of distortions
c. It has a tendency to over-correct errors
d. none of the above

ANSWER: It has a tendency to over-correct errors

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    Discussion

  • Pankaj   -Posted on 19 Oct 15
    - A closed-loop control system which can operate without human operator is known as an automatic control system.

    - One of the examples of automatic control system is a pressure control system where the pressure inside the furnace is automatically controlled by affecting changes in the position of damper.

    - There many advantages of the automatic control system such as increase in output, reduction in operating cost, improvement in the quality of the product, reduced effects of non-linearities and distortions.

    - The only limitation of the automatic control system is that it has a tendency to over-correct the errors which may results in oscillations of constant or changing amplitudes.

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